1. As noted, the Board adopted Illinois’ current general use water quality standard for dissolved oxygen in 1972, at which time the Board found it “essential to an adequate fish population.” Effluent Criteria, Water Quality Standards, Water Quality Standards Revisions for Intrastate Waters, R70-8, R71-14, R71-20, slip op. at 3 (Jan. 6, 1972).  The standard is presently set forth at 35 Ill. Adm. Code 302.206 and reads as follows:
        2. Section 302.206 Dissolved Oxygen
    1. OVERVIEW OF THE BOARD’S MAIN FINDINGS AT SECOND NOTICE
        1. Section 302.100 Definitions
  1. SUBPART B: GENERAL USE WATER QUALITY STANDARDS
        1. Section 302.206 Dissolved Oxygen
  2. First Hearing: June 29, 2004, Chicago
  3. Third Hearing: August 25, 2005
  4. Fourth Hearing: April 25, 2006
  5. Fifth Hearing: November 2-3, 2006

1
 
 

ILLINOIS POLLUTION CONTROL BOARD
January 24, 2008
 
IN THE MATTER OF:
 
PROPOSED AMENDMENTS TO DISSOLVED OXYGEN STANDARD 35 ILL. ADM. CODE 302.206 		)
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R04-25
(Rulemaking - Water)

Adopted Rule. Final Order.
 
OPINION AND ORDER OF THE BOARD (by A.S. Moore):
 
Today the Board adopts final amendments to Illinois’ dissolved oxygen (DO) general use water quality standard (35 Ill. Adm. Code 302.206). On January 9, 2008, the Joint Committee on Administrative Rules (JCAR) issued a certification of no objection concerning the amendments proposed by the Board at second notice. The Board will now file the adopted amendments with the Secretary of State for publication in the Illinois Register as final rules.
 
On July 12, 2007, the Board adopted its first-notice proposal, which was published in the Illinois Register on August 3, 2007. See 31 Ill. Reg. 11028 (Aug. 3, 2007). On November 15, 2007, the Board adopted its second-notice proposal. At second notice, the Board made only modest amendments to its first-notice rule language. With today’s final adoption, the Board, at JCAR’s suggestion, makes several minor changes to the second-notice rule amendments. No substantive changes are being made to the rules as they appeared at second notice. Accordingly, the final amendments continue to:

· Be based on aspects of both the original proposal filed by the rulemaking proponent, the Illinois Association of Wastewater Agencies (IAWA), and the joint proposal later filed by the Illinois Department of Natural Resources (DNR) and Illinois Environmental Protection Agency (IEPA).
· Be consistent with the National Criteria Document or “NCD” for DO of the United States Environmental Protection Agency (USEPA), Ambient Aquatic Life Water Quality Criteria for Dissolved Oxygen (Freshwater) (USEPA, Chapman 1986).
· Include a narrative DO standard, as well as a two-season numeric DO standard with values based on daily minima and 7- and 30-day averages.
· Include July in the “early life stages” season (March through July) of the two-season DO standard.
· Designate stream segments to receive “enhanced” numeric dissolved oxygen standards to protect DO-sensitive fish and macroinvertebrate species present in meaningful amounts.

In this final opinion, the Board first provides an introduction to dissolved oxygen, the relevant legal background, and the rulemaking. Next, the Board sets forth this proceeding’s procedural history. This is followed by an overview of the Board’s main findings at first notice and second notice. The final amendments themselves appear in the order following the opinion.
 

INTRODUCTION
 

Dissolved oxygen is essential to aquatic organisms for aerobic respiration. DO occurs between water molecules as microscopic bubbles of oxygen that fish “breathe” through their gills. 1 Human activities, including biochemical oxygen demand or “BOD” and nutrient discharge, and natural processes affect DO levels in Illinois waters. The DO general use water quality standard is critical to many other regulatory programs, including “impairment” assessments and Total Maximum Daily Load or “TMDL” under Section 303(d) of the federal Clean Water Act (33 U.S.C. § 1313(d)). By its authority under the Environmental Protection Act (Act) (415 ILCS 5 (2006)) and to reflect the current science, the Board is updating the existing DO water quality standard, which was adopted in 1972.
 
The Board’s responsibility in this rulemaking arises from the Act, which charges the Board to “determine, define, and implement the environmental control standards applicable in the state of Illinois.” 415 ILCS 5/5(b) (2006). Under Section 13 of the Act, the Board is granted specific rulemaking authority to establish water quality standards. See 415 ILCS 5/13 (2006). Section 13(a)(1) of the Act specifically addresses dissolved oxygen:
 

 
(a) The Board, pursuant to procedures prescribed in Title VII of this Act, may adopt regulations to promote the purposes and provisions of this Title. Without limiting the generality of this authority, such regulations may among other things prescribe:
 
(1) Water quality standards specifying among other things, the maximum short-term and long-term concentrations of various contaminants in the waters, the minimum permissible concentrations of dissolved oxygen and other desirable matter in the waters, and the temperature of such waters. 415 ILCS 5/13(a)(1) (2006) (emphasis added).



As noted, the Board adopted Illinois’ current general use water quality standard for dissolved oxygen in 1972, at which time the Board found it “essential to an adequate fish population.” Effluent Criteria, Water Quality Standards, Water Quality Standards Revisions for Intrastate Waters, R70-8, R71-14, R71-20, slip op. at 3 (Jan. 6, 1972).  The standard is presently set forth at 35 Ill. Adm. Code 302.206 and reads as follows:
 



Section 302.206  Dissolved Oxygen
 
Dissolved oxygen (STORET number 00300) shall not be less than 6.0 mg/l during at least 16 hours of any 24 hour period, nor less than 5.0 mg/l at any time. 35 Ill. Adm. Code 302.206.
 
Accordingly, the current standard permits dissolved oxygen to be less than 6.0 milligrams per liter (mg/L) no more than 8 hours in any 24-hour period, but at no time is dissolved oxygen allowed to fall below 5.0 mg/L. Section 302.206 is set forth in Part 302’s Subpart B (“General Use Water Quality Standards”), which “contains general use water quality standards which must be met in waters of the State for which there is no specific designation (35 Ill. Adm. Code 303.201).” 35 Ill. Adm. Code 302.101(b); see also 35 Ill. Adm Code 302.201. Generally, “all waters of the State must meet the general use standards of Subpart B of Part 302,” except as otherwise specifically provided in the Board’s regulations, such as for waters designated as secondary contact and indigenous aquatic life waters. See 35 Ill. Adm. Code 303.201, 303.204. 2
 
At first notice, the Board recognized that the State’s current DO standard is outdated and needs to be amended consistent with USEPA’s 1986 National Criteria Document or “NCD,” as adapted to Illinois waters. In the NCD, USEPA recommends separate DO criteria for coldwater and warmwater biota. While the coldwater criteria address the protection of salmonids, the warmwater criteria are meant to protect nonsalmonids, which include many coldwater and “coolwater” fish, plus all warmwater fish. Exh. 2 (NCD) at 2. The warmwater criteria protect the early life stages of warmwater fish as sensitive as channel catfish and other life stages of fish as sensitive as largemouth bass. Id. In addition, the NCD provides for the establishment of seasonal criteria based on the life stages of aquatic organisms present as long as data is available to accurately determine the presence or absence of the more sensitive stages. Id. at 4. The early life stages include embryonic and larval stages and all juvenile forms to 30-days after hatching. Id. at 34.
 
The NCD recommends a daily minimum to ensure that no acute mortality of sensitive species occurs because of low DO concentrations. Exh. 2 (NCD) at 36. For early life stages, the NCD recommends that the averaging period should not exceed 7 days to adequately protect the most sensitive life stages of aquatic organisms. A 30-day average is recommended for other life stages. The NCD also recommends the use of a 7-day mean minimum value for other life stages to prevent significant episodes of continuous or regularly recurring exposures to DO concentrations at or near the lethal threshold. Id. 
 
The current Illinois standard for DO was adopted 14 years before the NCD was issued by USEPA. Exh. 23 at 7. Not surprisingly then, the NCD’s criteria for DO address several elements not addressed by Illinois’ current standard: differences in sensitivity to low DO among types of fish or macroinvertebrates; differences in DO sensitivity depending on the life stages of fish; and practical considerations to account for occasional natural occurrences of low DO. Id. at 5.
 
Given the wide array of aquatic life and conditions across Illinois, the Board found at first notice that the current Illinois DO standard is not sufficiently sophisticated. PC 96 at 1, citing Exh. 23 at 1; PC 101 at 1; PC 102 at 2, 5; PC 103 at 1, 16; Exh. 14 at 1; Exh. 32 at 1-3; Statement at 4-5. As the Board noted in its first-notice opinion, almost all of the participants who articulated a position in this rulemaking favored amending the current dissolved oxygen water quality standard for general use waters. There was also much consensus in the record on how the current standard should be amended, such as by adopting DO standards that change seasonally based on the life stages of fish.
 
The two primary areas of disagreement among the rulemaking participants prior to first notice were (1) whether to include the month of July in the early life stages timeframe and (2) whether certain stretches of Illinois streams should have more protective DO standards than the rest of the general use waters based on the presence of allegedly DO-sensitive aquatic organisms. At first notice, the Board proposed to include July in the early life stages period and to include designated stream segments for enhanced DO protection. The Board continued to do so at second notice. As provided in its final public comment, IAWA ended up supporting the inclusion of July in the early life stage period but still opposed designating stream segments for enhanced DO protection. See PC 113.
 
At second notice, the Board replaced “calendar days” with “consecutive 24-hour periods” for measuring DO-standard attainment, as recommended by IEPA in its final public comment. Otherwise, the Board’s second-notice proposal remained substantively unchanged from first notice.
 
No substantive changes are being made today to the second-notice rule language. The final amendments should significantly improve the current DO standard. Unlike the current standard, the amendments take into account the varied DO requirements of aquatic communities and the diverse range of natural aquatic conditions present across Illinois. The amendments will also allow both public and private resources to be focused on those waters most impacted by low DO.

PROCEDURAL HISTORY
 

 On April 19, 2004, IAWA filed its rulemaking proposal to amend Illinois’ general use water quality standard for dissolved oxygen. 3 The Board issued an order on May 6, 2004, accepting the IAWA proposal for hearing. DNR and IEPA filed their joint proposed revisions to the DO standard on April 4, 2006.
 
As Toby Frevert, Manager of the Division of Water Pollution Control for IEPA, testified:
 
Illinois’ general use dissolved oxygen standard carries more significance than many of our other water quality standards and there is a wide diversity of opinion, perspective and attitude among the various constituencies participating in the proceeding. Exh. 14 at 2.
 
Given the significance of the DO general use water quality standard and the varied views of the rulemaking participants on how it should be revised, the Board accommodated the wishes of the participants and allowed this rulemaking to proceed at a pace that would allow for continued stakeholder discussions. To that end, the hearing officer scheduled hearings only when the participants stated that they were ready to proceed and only after the hearing officer, at the participants’ request, conducted six status conferences and received eight status reports over the course of nearly two years.
 
The Board held five public hearings over six days in this rulemaking: (1) June 29, 2004, in Chicago; (2) August 12, 2004, in Springfield; (3) August 25, 2005, in Chicago; (4) April 25, 2006, in Springfield; and (5) November 2-3, 2006, in Springfield. The following 20 persons testified at the hearings indicated:
 

· Dennis Streicher, Director of Water and Wastewater for the City of Elmhurst (first, second, and third hearings, and fifth hearing);
· John Callahan, Executive Director of the Bloomington and Normal Water Reclamation District of McLean County (first and second hearings);
· Dr. James Garvey, Associate Professor of Zoology and Associate Director of the Fisheries and Illinois Aquaculture Center at Southern Illinois University (first, second, and third hearings, and fifth hearing);
· Roy Harsch, Drinker Biddle Gardner Carton, attorney for IAWA (first, second, and third hearings, and fifth hearing);
· Toby Frevert, Manager of the Division of Water Pollution Control for IEPA (all five hearings);
· Dr. David Thomas, Chief of the Illinois Natural History Survey, DNR (second and third hearings);
· Mark Miller, Senior Policy Advisor for Lieutenant Governor Pat Quinn (second hearing);
· Stan Yonkauski, Deputy Counsel with DNR’s Office of Legal Counsel (third hearing);
· Albert Ettinger, attorney for Environmental Law & Policy Center, Prairie Rivers Network, and Sierra Club (third hearing);
· Todd Main, Director of Policy and Planning, Friends of the Chicago River (third hearing);
· Dr. Thomas Murphy, Professor Emeritus of Chemistry, DePaul University (third, fourth, and fifth hearings);
· Roy Smogor, a stream biologist in IEPA’s Surface Water Section (fourth and fifth hearings);
· Joel Cross, Acting Manager of the Watershed Protection Section within the Office of Resource Conservation of DNR (fourth and fifth hearings);
· Matthew Short with the Surface Water Section of IEPA (fourth hearing);
· Ann Holtrop, Watershed Information Specialist with the Watershed Protection Section of DNR (fourth hearing);
· Richard Lanyon, General Superintendent of the Metropolitan Water Reclamation District of Greater Chicago (fourth and fifth hearings);
· Thomas Muth, District Manager, Fox Metro Water Reclamation District (fifth hearing);
· Stephen Pescitelli, stream biologist with DNR (fifth hearing);
· Louis Kollias, Director of the Department of Research and Development with the Metropolitan Water Reclamation District of Greater Chicago (fifth hearing); and
· Cindy Skrukrud, Clean Water Advocate for the Illinois Chapter of the Sierra Club (fifth hearing).

       
The Board hearing officer accepted 41 hearing exhibits into the record. The hearing exhibits are described in Appendix I to this opinion and order. Upon receipt, the transcripts of the hearings were placed in the Clerk’s Office On Line (COOL) on the Board’s Web site at www.ipcb.state.il.us . 4 Many other documents from this rulemaking record are available through COOL, including Board opinions and orders, hearing officer orders, and public comments.
 
As required by Section 27(b) of the Act (415 ILCS 5/27(b) (2006)), the Board requested, in a letter of May 11, 2004, that the Department of Commerce and Economic Opportunity (DCEO) conduct an economic impact study (EcIS) for this rulemaking. In a letter of June 22, 2004, DCEO declined to perform an EcIS, noting its limited fiscal resources. When provided the opportunity at hearing, no one testified about DCEO’s response. Tr.2 at 159.
 
The Board received 110 public comments prior to its first-notice decision. 5 Those public commenters are listed in Appendix II to this opinion and order. The first-notice public comment period ended on September 17, 2007, 45 days after publication in the Illinois Register of the proposed rule changes. See 31 Ill. Reg. 11028 (Aug. 3, 2007). The Board received four additional public comments during the first-notice public comment period:
 

· PC 111 filed by the Metropolitan Water Reclamation District of Greater Chicago (MWRDGC) on August 30, 2007.
· PC 112 filed by Dr. Thomas Murphy, Professor Emeritus of Chemistry, DePaul University on September 17, 2007.
· PC 113 filed by IAWA on September 17, 2007.
· PC 114 filed by IEPA on September 17, 2007 (received September 19, 2007, but considered timely-filed under the “mailbox rule” at 35 Ill. Adm. Code 101.300(b)(2)).

The Board issued a second-notice opinion and order on November 15, 2007. On January 9, 2008, JCAR issued a certification of no objection concerning the second-notice amendments.

OVERVIEW OF THE BOARD’S MAIN FINDINGS AT FIRST NOTICE

The following is a brief summary of the main findings made by the Board in its 98-page first-notice opinion of July 12, 2007. First, the Board found that Illinois’ current general use water quality standard for dissolved oxygen needs to be amended and that those amendments should be based primarily on USEPA’s NCD for DO. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 12-14 (July 12, 2007) (first notice).

Next, the Board agreed with IAWA’s proposed approach of having a two-season DO standard, one more protective for the sensitive early life stages of fish and another for other life stages. Further, the Board proceeded to first notice with IAWA’s proposed numeric DO levels as follows, at least with respect to the vast majority of general use waters: for early life stages, a daily minimum DO concentration of 5.0 mg/L and a seven-day mean of 6.0 mg/L DO; for other life stages, a daily minimum DO concentration of 3.5 mg/L and a seven-day mean minimum of 4.0 mg/L DO. As proposed by DNR and IEPA, and ultimately agreed to by IAWA, the Board also proposed for first notice a 30-day mean DO standard of 5.5 mg/L for other life stages. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 34-35 (July 12, 2007) (first notice).

The Board found that the analyses of several grab and semi-continuous DO monitoring datasets provided in this record indicate that the current Illinois DO standard does not account for the seasonal variation and diurnal fluctuations of DO naturally occurring in streams. Beyond that, however, the Board found that helpful conclusions could not be drawn at that time from the DO datasets for the purposes of this rulemaking. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 46-49 (July 12, 2007) (first notice).     

The Board agreed with DNR and IEPA that certain stream segments, approximately 8% of general use stream miles in Illinois, require incrementally enhanced DO standards based on the presence of meaningful amounts of DO-sensitive aquatic organisms. Accordingly, the Board proposed for first notice that these stream segments, identified in Appendix D to Part 302, have the following DO standards: for early life stages, a daily minimum DO concentration of 5.0 mg/L and a seven-day mean of 6.25 mg/L DO; for other life stages, a daily minimum DO concentration of 4.0 mg/L, a seven-day mean minimum of 4.5 mg/L DO, and a 30-day mean DO standard of 6.0 mg/L. The Board noted that if a discharger believes these more protective DO standards are not warranted for a given stream segment, the discharger may seek site-specific relief from the Board, such as an adjusted standard or site-specific rule under the Act. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 68-74 (July 12, 2007) (first notice).
To protect late spring and summer spawning, the Board found that the month of July should be included in the early life stages (i.e., March through July), as proposed by DNR and IEPA, rather than having the early life stages timeframe end on June 30, as IAWA had proposed. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 79-81 (July 12, 2007) (first notice).
 
As proposed by DNR and IEPA, and agreed to by IAWA, the Board also proposed for first notice a narrative DO standard for quiescent and isolated sectors of general use waters, such as wetlands and waters below the thermocline in lakes, to ensure that the full array of general use waters are protected. The numeric DO standards would not apply in these isolated waters where naturally-occurring DO concentrations cannot reasonably be expected to attain numeric values set for most general use waters. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 84-85 (July 12, 2007) (first notice).
 
At first notice, the Board declined to adopt the following suggestions made during this proceeding: (1) to express the DO water quality standard as percent saturation rather than as concentration in mg/L; and (2) to include a minimum DO level of 6.5 mg/L for all general use waters when water temperature is 10°C or below. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 87-89 (July 12, 2007) (first notice). The Board also declined to require that any IEPA “implementation rules” for DO monitoring or permitting be filed in this docket, but the Board did add language to the DNR/IEPA proposal, more specifically describing the 7-day mean minimum, the 7-day mean, and the 30-day mean. Id. at 92-94.
 
Additionally, the Board did not include in its first-notice proposal a “waiver” for urban-impacted streams or a separate “wet weather standard” based on stormwater runoff. Finally, the Board found that the first-notice proposal would not have an adverse impact on the People of the State of Illinois. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 96-97 (July 12, 2007) (first notice).
 



OVERVIEW OF THE BOARD’S MAIN FINDINGS AT SECOND NOTICE

        
The following summarizes the main findings made by the Board in its second-notice opinion of November 15, 2007.
 

Designating Stream Segments for Enhanced DO Standards
 

 The Board at second notice welcomed IAWA’s change in position, from opposition to support for including July in early life stage period. The Board disagreed, however, with IAWA’s position that requiring the more protective DO standards for designated stream segments, roughly 8% of Illinois’ general use stream miles, was not based on sound science. The Board noted that its first-notice opinion addressed in great detail the concerns expressed in IAWA’s last public comment. At second notice, the Board found that IAWA did not raise any new issues or present any new information to convince the Board to change its course regarding the enhanced DO standards for particular stream segments. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 9 (Nov. 15, 2007) (second notice), citing Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 68-74 (July 12, 2007) (first notice).       
 
The Board found that the process of selecting the stream segments targeted for enhanced protection was based on extensive stream-specific biological information. DNR and IEPA established the presence of “meaningful amounts” of DO-sensitive organisms in specified Illinois streams by relying on extensive fish and macroinvertebrate data from approximately 1,100 stream sites across the State. Further, the State agencies relied on reasonable biological measures, and threshold values based on data from healthy streams to identify stream sites with meaningful amounts of DO-sensitive organisms. The Board reiterated its earlier finding that the biological data and scientific literature on the DO-sensitivity of aquatic life were more helpful than the limited DO datasets for setting DO water quality standards at levels that meet the needs of aquatic life. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 10 (Nov. 15, 2007) (second notice), citing Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 73 (July 12, 2007) (first notice).
 
The Board stated that when setting water quality standards, it places significant weight on adopting a standard that fully protects aquatic life, rather than simply trying to arrive at a standard that would be met by current stream conditions. If stream segments do not meet the proposed DO standards upon adoption, the Board stated that it would expect those segments to be assessed in accordance with the requirements of Section 303(d) of the federal Clean Water Act. That provision requires states to identify and list waters that do not meet applicable water quality standards or do not fully support their designated uses. This list of impaired waters, known as the “303(d) list,” is submitted to USEPA for review and approval. The federal Clean Water Act also requires that a TMDL be developed for each pollutant of an impaired water body. A TMDL must consider all potential sources of pollutants, whether point or nonpoint. It also takes into account a margin of safety, which reflects scientific uncertainty, as well as the effects of seasonal variation. A new DO general use water quality standard in Illinois, the Board noted, would impact these federally-driven requirements. Importantly, the new standard should be better tailored than the current DO standard for identifying waters that are actually DO-impaired. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 10-11 (Nov. 15, 2007) (second notice).   
 

Technical Feasibility and Economic Reasonableness
 

The Board noted MWRDGC’s assertions that significant portions of the Des Plaines River System would immediately be out of compliance upon the effective date of the new DO water quality standards. The Board reemphasized, however, that it “does not establish an ambient water quality standard for DO based on whether Illinois waters presently comply with the standard.” Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 11 (Nov. 15, 2007) (second notice), quoting Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 96 (July 12, 2007) (first notice). The Board stated that its primary task in this rulemaking is:
 

to establish the “minimum permissible concentrations of dissolved oxygen” that will protect aquatic organisms in general use waters based on the scientific evidence. [415 ILCS 5/13(a)(1) (2006); see also PC 103 at 12.] In doing so, the Board fulfills its responsibility under the federal Clean Water Act to, in IEPA’s words, “update outdated standards to reflect the current science.” [PC 103 at 12.] Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 11 (Nov. 15, 2007) (second notice), quoting Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 96-97 (July 12, 2007) (first notice).

 
The Board noted that Section 27(a) of the Act directs the Board to take into account the “technical feasibility and economic reasonableness of measuring or reducing the particular type of pollution” when conducting a substantive rulemaking. 415 ILCS 5/27(a) (2006). The new DO standard, the Board observed, likely would indirectly impact technical and economic issues for particular pollutants in discharges. Section 27(b) of the Act requires the Board to determine whether a proposed substantive regulation “has any adverse economic impact on the people of the State of Illinois.” 415 ILCS 5/27(b) (2006). The Board stated that a new DO standard has the potential to primarily affect wastewater dischargers (e.g., POTWs, industrial dischargers, and agricultural point and nonpoint sources) that discharge oxygen-depleting substances, including BOD and nutrients. Tr.4 at 80-84; Statement at 2. The Board found that the issues described by MWRDGC, however, would not be caused by this rulemaking. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 11 (Nov. 15, 2007) (second notice).  
 
There is no dispute in this record, the Board noted, that there are Illinois streams not meeting Illinois’ current DO standard, or that both the IAWA proposal and DNR/IEPA proposal would “result in some significant (but smaller) number of exceedances [violations].” Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 11-12 (Nov. 15, 2007) (second notice), quoting PC 103 at 14. The Board quoted IEPA:
 
In nearly every instance, this rulemaking is expected to be less restrictive than the current [DO] standard and therefore less likely to yield exceedances (violations) of no environmental significance. PC 103 at 11; see also Tr.4 at 161 (Lanyon, General Superintendent of MWRDGC, conceded on cross-examination that neither IAWA’s nor DNR/IEPA’s proposal “would impose a stricter DO standard than we have on the books today”).
 
IEPA went further, maintaining that because the DNR/IEPA-proposed DO standards more accurately reflect aquatic community needs, the joint-agency proposal “will actually be economically beneficial by more accurately focusing environmental management resources” on waters “in need.” PC 103 at 11. The Board, in its first-notice opinion, agreed with IEPA and found that the amendments proposed for first notice would not have an adverse impact on the People of the State of Illinois. At second notice, the Board stated that “[n]othing has since been provided to the Board that would warrant the Board changing this finding at second notice.” Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 12 (Nov. 15, 2007) (second notice).
 
Moreover, added the Board, the Act provides several ways to seek either temporary or permanent site-specific relief from rules of general applicability, in the form of petitions for variances, adjusted standards, and site-specific rules. These mechanisms allow for case-by-case demonstrations before the Board based on factors such as compliance with the general rule imposing an “arbitrary and unreasonable hardship” (415 ILCS 5/35(a) (2006)), “factors relating to that petitioner are substantially and significantly different from the factors relied upon by the Board in adopting the general regulation” (415 ILCS 5/28.1(c)(1) (2006)), and the factors of “technical feasibility and economic reasonableness” (415 ILCS 5/27(a) (2006)). See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 12 (Nov. 15, 2007) (second notice).  
 
In addition, the Board discussed at second notice that the rules would include a narrative standard, reflecting the fact that under certain natural conditions unaffected by deleterious human activities, dissolved oxygen may periodically decline below numeric standards to concentrations typically considered acutely harmful to aquatic life. To address these unavoidable situations, the Board stated, one component of the proposed narrative standard required that quiescent and isolated sectors of general use waters be maintained at sufficient DO concentrations to support their natural ecological functions and resident aquatic communities. The proposed numeric standards for DO would not apply in these quiescent and isolated sectors, but rather only in the main body of streams, in the water above the thermocline of thermally stratified lakes and reservoirs, and in the entire water column of unstratified lakes and reservoirs. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 12-13 (Nov. 15, 2007) (second notice).  
 

Implementation Concerns
 

MWRDGC took issue with proposed Section 302.206(d)(3) requiring that DO attainment measurements “represent the true daily minima and daily means.” PC 111 at 1. MWRDGC construed this language as suggesting that “some degree of continuous monitoring will be required,” adding however that the rule language “does not identify how many daily values should be captured in order to ‘assure’ they are representative.” Id. Dr. Murphy also wanted implementation rules in the proposal, suggesting a margin of error by adding one or more mg/L to each of the proposed standards to account for measurement uncertainties. PC 112 at 5.
 
The Board noted that it had discussed implementation concerns extensively at first notice. As stated in that opinion, the Board declined to require the filing of implementation rules in this docket. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 90-94 (July 12, 2007) (first notice). At second notice, the Board reiterated that developing or adopting IEPA implementation “rules” was not necessarily a prerequisite to USEPA approval of these DO water quality standards and that Frevert, Manager of the Division of Water Pollution Control for IEPA, does not anticipate IEPA adopting any regulations on DO sampling. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 13 (Nov. 15, 2007) (second notice).  
  
The new DO standards, the Board stated, would now include 7- and 30-day averages to help ensure that aquatic organisms are not subject to chronically low DO. This critical enhancement to Illinois’ current standard alone was expected to lead to additional monitoring beyond that presently performed to determine compliance with 6.0 mg/L during 16 hours of any 24-hour period and 5.0 mg/L at any time. In its first-notice opinion, the Board found that subsection (d) of the DNR/IEPA-proposed Section 302.206 provided a detailed account of how to assess attainment of daily mean and minimum DO values.
 
The Board agreed, however, with MWRDGC and the environmental groups that subsection (d) could benefit from specific language on how to assess attainment of the 7-day mean minimum, the 7-day mean, and the 30-day mean. The Board at first notice therefore added language on determining the 7- and 30-day values, and the proposed amendments described how to assess attainment of the DO mean and minimum values. Those provisions were further refined at second notice, as discussed below. The Board emphasized that the DO data needed to make these assessments would doubtlessly inform the eventual monitoring process. The Board continued to agree with IEPA that the temporal detail and measurement techniques necessary to determine compliance with the DO standard were “an inherent part of the standard itself, not separate implementation procedures.” Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 13-14 (Nov. 15, 2007) (second notice), quoting IEPA Resp. to Mot. to Suspend at 3 (Aug. 6, 2004).
 
On carrying out a measuring program to determine attainment of the DO standard, the Board quoted the testimony of Frevert, Manager of the Division of Water Pollution Control for IEPA:
 
It is their responsibility to assure that the way they design their monitoring system and the way they collect their data, it is truly representative, not misrepresentative of the normal variation. You can’t go out and get three samples at nine at night, ten o’clock at night and eleven o’clock at night and pretend they represent the full 24-hour period. And I’m not trying to specify how many samples is the minimum to do it correctly. I think that would be a difficult or impossible task, but you must -- if you’re collecting data and you’re using it to draw conclusions or make
assertions about compliance with this standard, it’s your responsibility to look at the representativeness of your monitoring scheme and its statistical reliability. Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 14 (Nov. 15, 2007) (second notice), quoting Tr.4 at 75-76.
             

 
IEPA has stated in this record, added the Board, that DO is not routinely included as a National Pollutant Discharge Elimination System (NPDES) permit effluent concentration and that even for dischargers located immediately upstream of stream segments selected for enhanced DO protection, IEPA did not plan to modify its permit issuance approach. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 14-15 (Nov. 15, 2007) (second notice), citing Tr.4 at 122-23; Tr.5 at 254-56 (less than 1% of Illinois NPDES discharge permits have conditions requiring in-stream monitoring to assess DO attainment; the vast majority of the permits have discharge limits of 10 or 20 mg/L CBOD5 set under the deoxygenating wastes rule (35 Ill. Adm. Code 304.120)).

As at first notice, the Board carefully reviewed the record and prior relevant rulemaking precedent. The Board at second notice found that the participants had not raised any new issues or provided any new information to convince the Board that implementation rules must or should be a part of this docket. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 15 (Nov. 15, 2007) (second notice). The Board concluded that this docket had appropriately developed to the point where the Board could propose for second notice what the dissolved oxygen condition of Illinois general use waters should be, a task “fundamentally different [from] . . . day-to-day implementation and management and monitoring and enforcement decisions.” Id., Tr.1 at 142-43 (quoting Frevert).
 

DO Saturation Versus Concentration
 

The Board reiterated at second notice that USEPA’s NCD does not appear to contemplate a temperature-triggered DO standard. The two-concentration criteria structure presented in the NCD and followed by the Board at first notice represented USEPA’s preferred approach, added the Board. Although dissolved oxygen concentration, partial pressure, and percent saturation are all interrelated, the Board found that relying on criteria based on concentration in mg/L is the more direct and practical approach. As to the supporting body of scientific evidence, currently most DO monitoring data and the scientific literature regarding fish are based on mg/L. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 15-16 (Nov. 15, 2007) (second notice).   
 
IEPA commented that it was unaware of any USEPA Region 5 state (i.e., Indiana, Michigan, Minnesota, Ohio, and Wisconsin, in addition to Illinois) that had adopted numeric DO standards with applicability based on water temperature. PC 114 at 4. As with the 6.5 mg/L DO standard proposed by Dr. Murphy and the environmental groups before first notice for waters at or below 10°C, the Board found at second notice that there was not enough evidence in this record to demonstrate that Dr. Murphy’s latest proposal of 5 mg/L at 0°C or 4 mg/L at 5-10°C was necessary or appropriate to supplement the proposed numeric and narrative standards for Illinois general use waters. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 15-16 (Nov. 15, 2007) (second notice).
 

Factors for Site-Specific Relief
 

 IAWA agreed with the Board’s first-notice statement that site-specific relief may be available to a discharger if enhanced DO standards are not warranted for a given stream segment, but IAWA argued that the proposed regulations should prescribe the specific factors to be demonstrated by an affected discharger in order to successfully obtain the relief. The Board declined to amend the proposed DO water quality rules to address site-specific relief at the second-notice stage of the rulemaking. IAWA had not proposed any specific factors for Board consideration. The Board welcomed IAWA or any other person to file a rulemaking proposal addressing the factors for site-specific relief from the DO standards. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 16 (Nov. 15, 2007) (second notice). The Board added that in the meanwhile, it would continue to evaluate requests for site-specific or adjusted water quality standards by relying on the existing statutory and regulatory criteria. Id., citing 415 ILCS 5/28.1(a), (c) (2006); 35 Ill. Adm. Code 104.406, 104.426.
 

Calendar Days Versus Consecutive 24-Hour Periods
 

IEPA proposed amendments to the first-notice rule language regarding assessing attainment of DO standards. Specifically, IEPA suggested that Section 302.206(d), as proposed for first notice, be modified to avoid restricting the determination of daily means and daily minima to a “calendar day.” PC 114 at 2. IEPA explained that limiting measurements to a calendar day, as opposed to any period of 24 consecutive hours, may unintentionally prevent the use of otherwise valid DO measurements, where the monitoring period did not begin and end at midnight. The Board agreed with IEPA that requiring measurements to be based on “calendar days” was unnecessarily restrictive and could lead to wasting resources. The Board accordingly amended the language for second notice by replacing “calendar days” with “consecutive 24-hour periods.” The Board’s second-notice proposal was otherwise substantively unchanged from its first-notice proposal. See Proposed Amendments to Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, R04-25, slip op. at 1, 16-18, 20 (Nov. 15, 2007) (second notice).  
 

CONCLUSION
 

Illinois’ current general use water quality standard for dissolved oxygen, adopted in 1972, is outdated and too simplistic to account for the natural variability of waters and their aquatic communities across this State. The final DO standard adopted today is consistent with USEPA’s NCD as adapted to Illinois waters and reflects the current science. By allowing both public and private resources to be concentrated on general use waters that are truly impaired by low DO levels, the final amendments promise to significantly and economically enhance the protection of Illinois aquatic life.
 
The Board’s adopted amendments, as at first and second notice, include the essential elements of IAWA’s proposal, but with critical additions originally proposed by DNR and IEPA. The IAWA proposal of a two-season DO standard with averaging and DO values consistent with the NCD “warmwater” criteria is a major step toward modernizing the Illinois standard, but it does not go far enough. It is true that most of Illinois’s aquatic organisms can be characterized as having the DO-sensitivity of “warmwater” organisms and that most spawning is completed in the spring. As this record shows, however, IAWA’s proposal does not adequately address the fact that there are significant “intermediate” organisms and “late spring and summer spawners” in Illinois. The Board accordingly is requiring in the final amendments that designated stream segments (approximately 8% of Illinois’ 71,394 general use stream miles) have enhanced DO standards based on the presence of meaningful amounts of DO-sensitive organisms and that the month of July be included in the sensitive “early life stages” timeframe (i.e., March through July). The record demonstrates that these additional protections over and above the IAWA proposal are necessary to fully protect Illinois aquatic life.        
 
The Board agrees with Joel Cross, Acting Manager of DNR’s Watershed Protection Section, that the rule changes adopted today are not a “lowering of dissolved oxygen standards within some waters during certain times of the year, but rather [a] focusing [of] needed protection for most sensitive types and life stages of aquatic life where required.” Tr.4 at 46. The final amendments provide enhanced DO protection when and where it is most needed. Further, the narrative standard ensures that the full range of general use waters in Illinois is protected against low DO. Based on this record, the Board finds, as it did at first and second notice, that the amendments will not have an adverse impact on the People of the State of Illinois.
 
Additionally, the Board recognizes that after implementation of the final DO standard adopted in this rulemaking, further study may reveal that regulatory relief is warranted for specific stream stretches. The Act has mechanisms already in place, such as adjusted standards, that allow for case-by-case, site-specific relief when the necessary demonstrations are made before the Board.
 
The Board thanks all of those who have participated in this proceeding. The rulemaking record had benefited greatly from the active participation of many individuals and organizations, including Environmental Law & Policy Center, Prairie Rivers Network, Sierra Club, MWRDGC, and the Office of Lieutenant Governor Pat Quinn. The Board expresses deep gratitude to IAWA, DNR, and IEPA for their especially thorough contributions to this record.
  

ORDER
 

 The Board adopts the following amendments to Illinois’ dissolved oxygen general use water quality standard (35 Ill. Adm. Code 302.206) and directs the Clerk to submit the amendments to the Secretary of State for publication in the Illinois Register as final rules.
 

TITLE 35: ENVIRONMENTAL PROTECTION
SUBTITLE C: WATER POLLUTION

 
CHAPTER I: POLLUTION CONTROL BOARD

PART 302

 
WATER QUALITY STANDARDS

SUBPART A: GENERAL WATER QUALITY PROVISIONS
 

Section
302.100  Definitions
302.101  Scope and Applicability
302.102  Allowed Mixing, Mixing Zones and ZIDs
302.103  Stream Flows
302.104  Main River Temperatures
302.105  Antidegradation
 

SUBPART B: GENERAL USE WATER QUALITY STANDARDS
 

Section
302.201  Scope and Applicability
302.202  Purpose
302.203  Offensive Conditions
302.204  pH
302.205  Phosphorus
302.206  Dissolved Oxygen
302.207  Radioactivity
302.208  Numeric Standards for Chemical Constituents
302.209  Fecal Coliform
302.210  Other Toxic Substances
302.211  Temperature
302.212  Total Ammonia Nitrogen
302.213  Effluent Modified Waters (Ammonia)(Repealed)
 

SUBPART C: PUBLIC AND FOOD PROCESSING WATER SUPPLY STANDARDS
 

Section
302.301  Scope and Applicability
302.302  Algicide Permits
302.303  Finished Water Standards
302.304  Chemical Constituents
302.305  Other Contaminants

302.306 Fecal Coliform

302.207  Radium 226 and 228
 

SUBPART D: SECONDARY CONTACT AND INDIGENOUS AQUATIC LIFE STANDARDS
 

Section
302.401  Scope and Applicability
302.402  Purpose
302.403  Unnatural Sludge
302.404  pH
302.405  Dissolved Oxygen
302.406  Fecal Coliform (Repealed)
302.407  Chemical Constituents
302.408  Temperature
302.409  Cyanide
302.410  Substances Toxic to Aquatic Life
 

SUBPART E: LAKE MICHIGAN BASIN WATER QUALITY STANDARDS
 

Section
302.501  Scope, Applicability, and Definitions
302.502  Dissolved Oxygen
302.503  pH
302.504  Chemical Constituents

302.505 Fecal Coliform

302.506  Temperature
302.507  Thermal Standards for Existing Sources on January 1, 1971

302.508 Thermal Standards for Sources Under Construction But Not In Operation on January 1, 1971

302.509  Other Sources
302.510  Incorporations by Reference
302.515  Offensive Conditions
302.520  Regulation and Designation of Bioaccumulative Chemicals of Concern (BCCs)

302.521 Supplemental Antidegradation Provisions for Bioaccumulative Chemicals of Concern (BCCs)

302.525  Radioactivity

302.530 Supplemental Mixing Provisions for Bioaccumulative Chemicals of Concern (BCCs)

302.535  Ammonia Nitrogen
302.540  Other Toxic Substances
302.545  Data Requirements
302.550  Analytical Testing

302.553 Determining the Lake Michigan Aquatic Toxicity Criteria or Values - General Procedures
302.555 Determining the Tier I Lake Michigan Acute Aquatic Toxicity Criterion (LMAATC): Independent of Water Chemistry
302.560 Determining the Tier I Lake Michigan Basin Acute Aquatic Life Toxicity Criterion (LMAATC): Dependent on Water Chemistry
302.563 Determining the Tier II Lake Michigan Basin Acute Aquatic Life Toxicity Value (LMAATV)
302.565 Determining the Lake Michigan Basin Chronic Aquatic Life Toxicity Criterion (LMCATC) or the Lake Michigan Basin Chronic Aquatic Life Toxicity Value (LMCATV)

302.570  Procedures for Deriving Bioaccumulation Factors for the Lake Michigan Basin

302.575 Procedures for Deriving Tier I Water Quality Criteria and Values in the Lake Michigan Basin to Protect Wildlife
302.580 Procedures for Deriving Water Quality Criteria and Values in the Lake Michigan Basin to Protect Human Health – General
302.585 Procedures for Determining the Lake Michigan Basin Human Health Threshold Criterion (LMHHTC) and the Lake Michigan Basin Human Health Threshold Value (LMHHTV)
302.590 Procedures for Determining the Lake Michigan Basin Human Health Nonthreshold Criterion (LMHHNC) or the Lake Michigan Basin Human Health Nonthreshold Value (LMHHNV)

302.595  Listing of Bioaccumulative Chemicals of Concern, Derived Criteria and Values
 

SUBPART F: PROCEDURES FOR DETERMINING WATER QUALITY CRITERIA
 

Section
302.601  Scope and Applicability
302.603  Definitions
302.604  Mathematical Abbreviations
302.606  Data Requirements

302.612 Determining the Acute Aquatic Toxicity Criterion for an Individual Substance – General Procedures
302.615 Determining the Acute Aquatic Toxicity Criterion - Toxicity Independent of Water Chemistry
302.618 Determining the Acute Aquatic Toxicity Criterion - Toxicity Dependent on Water Chemistry
302.621 Determining the Acute Aquatic Toxicity Criterion - Procedure for Combinations of Substances
302.627 Determining the Chronic Aquatic Toxicity Criterion for an Individual Substance - General Procedures
302.630 Determining the Chronic Aquatic Toxicity Criterion - Procedure for Combinations of Substances

302.633  The Wild and Domestic Animal Protection Criterion
302.642  The Human Threshold Criterion
302.645  Determining the Acceptable Daily Intake
302.648  Determining the Human Threshold Criterion
302.651  The Human Nonthreshold Criterion
302.654  Determining the Risk Associated Intake
302.657  Determining the Human Nonthreshold Criterion
302.658  Stream Flow for Application of Human Nonthreshold Criterion
302.660  Bioconcentration Factor
302.663  Determination of Bioconcentration Factor
302.666  Utilizing the Bioconcentration Factor
302.669  Listing of Derived Criteria
 
302.APPENDIX A  References to Previous Rules
302.APPENDIX B  Sources of Codified Sections

302.APPENDIX C Maximum total ammonia nitrogen concentrations allowable for certain combinations of pH and temperature

302.TABLE A    pH-Dependent Values of the AS (Acute Standard)

302.TABLE B Temperature and pH-Dependent Values of the CS (Chronic Standard) for Fish Early Life Stages Absent
302.TABLE C Temperature and pH-Dependent Values of the CS (Chronic Standard) for Fish Early Life Stages Present
 
302.APPENDIX D
Section 302.206(d): Stream Segments for Enhanced Dissolved Oxygen Protection

AUTHORITY: Implementing Section 13 and authorized by Sections 11(b) and 27 of the Environmental Protection Act [415 ILCS 5/13, 11(b), and 27]
 
SOURCE: Filed with the Secretary of State January 1, 1978; amended at 2 Ill. Reg. 44, p. 151, effective November 2, 1978; amended at 3 Ill. Reg. 20, p. 95, effective May 17, 1979; amended at 3 Ill. Reg. 25, p. 190, effective June 21, 1979; codified at 6 Ill. Reg. 7818; amended at 6 Ill. Reg. 11161, effective September 7, 1982; amended at 6 Ill. Reg. 13750, effective October 26, 1982; amended at 8 Ill. Reg. 1629, effective January 18, 1984; peremptory amendments at 10 Ill. Reg. 461, effective December 23, 1985; amended at R87-27 at 12 Ill. Reg. 9911, effective May 27, 1988; amended at R85-29 at 12 Ill. Reg. 12082, effective July 11, 1988; amended in R88-1 at 13 Ill. Reg. 5998, effective April 18, 1989; amended in R88-21(A) at 14 Ill. Reg. 2899, effective February 13, 1990; amended in R88-21(B) at 14 Ill. Reg. 11974, effective July 9, 1990; amended in R94-1(A) at 20 Ill. Reg. 7682, effective May 24, 1996; amended in R94-1(B) at 21 Ill. Reg. 370, effective December 23, 1996; expedited correction at 21 Ill. Reg. 6273, effective December 23, 1996; amended in R97-25 at 22 Ill. Reg. 1356, effective December 24, 1997; amended in R99-8 at 23 Ill. Reg. 11249, effective August 26, 1999; amended in R01-13 at 26 Ill. Reg. 3505, effective February 22, 2002; amended in R02-19 at 26 Ill. Reg. 16931, effective November 8, 2002; amended in R02-11 at 27 Ill. Reg. 166, effective December 20, 2002; amended in R04-21 at 30 Ill. Reg. 4919, effective March 1, 2006; amended in R04-25 at 32 Ill. Reg. ___________, effective ______________.
 


SUBPART A: GENERAL WATER QUALITY PROVISIONS
 



Section 302.100  Definitions
 
Unless otherwise specified, the definitions of the Environmental Protection Act (Act) [415 ILCS 5] and 35 Ill. Adm. Code 301 apply to this Part. As used in this Part, each of the following definitions has the specified meaning.
 
  "Acute Toxicity" means the capacity of any substance or combination of substances to cause mortality or other adverse effects in an organism resulting from a single or short-term exposure to the substance.
   
  "Adverse Effect" means any gross or overt effect on an organism, including but not limited to reversible histopathological damage, severe convulsions, irreversible functional impairment and lethality, as well as any non-overt effect on an organism resulting in functional impairment or pathological lesions which may affect the performance of the whole organism, or which reduces an organism's ability to respond to an additional challenge.
   
  "Chronic Toxicity" means the capacity of any substance or combination of substances to cause injurious or debilitating effects in an organism which result from exposure for a time period representing a substantial portion of the natural life cycle of that organism, including but not limited to the growth phase, the reproductive phases or such critical portions of the natural life cycle of that organism.
   
  "Criterion" means the numerical concentration of one or more toxic substances derived in accordance with the procedures in Subpart F of this Part which, if not exceeded, would assure compliance with the narrative toxicity standard of Section 302.210 of this Part.
   
“Early Life Stages” of fish means the pre-hatch embryonic period, the post-hatch free embryo or yolk-sac fry, and the larval period, during which the organism feeds. Juvenile fish, which are anatomically similar to adults, are not considered an early life stage.
 
  "Hardness" means a water quality parameter or characteristic consisting of the sum of calcium and magnesium concentrations expressed in terms of equivalent milligrams per liter as calcium carbonate. Hardness is measured in accordance with methods specified in 40 CFR 136, incorporated by reference in 35 Ill. Adm. Code 301.106.
   
  "Mixing Zone" means a portion of the waters of the State identified as a region within which mixing is allowed pursuant to Section 302.102(d) of this Part.
   
  “Thermocline” means the plane of maximum rate of decrease of temperature with respect to depth in a thermally stratified body of water.
   
  "Total Residual Chlorine" or "TRC" means those substances which include combined and uncombined forms of both chlorine and bromine and which are expressed, by convention, as an equivalent concentration of molecular chlorine. TRC is measured in accordance with methods specified in 40 CFR 136, incorporated by reference in 35 Ill. Adm. Code 301.106.
   
  "Toxic Substance" means a chemical substance that causes adverse effects in humans, or in aquatic or terrestrial animal or plant life. Toxic substances include, but are not limited to, those substances listed in 40 CFR 302.4, incorporated by reference in 35 Ill. Adm. Code 301.106, or any "chemical substance" as defined by the Illinois Chemical Safety Act [430 ILCS 45]
   
  "ZID" or "Zone of Initial Dilution" means a portion of a mixing zone, identified pursuant to Section 302.102(e) of this Part, within which acute toxicity standards need not be met.

(Source: Amended at 32 Ill. Reg. __________, effective ________________)
 

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SUBPART B: GENERAL USE WATER QUALITY STANDARDS
 



Section 302.206  Dissolved Oxygen
 
General use waters must maintain dissolved oxygen concentrations at or above the values contained in subsections (a), (b) and (c) of this Section.  Dissolved oxygen (STORET number 00300) shall not be less than 6.0 mg/L during at least 16 hours of any 24 hour period, nor less than 5.0 mg/L at any time.
 
a)  General use waters at all locations must maintain sufficient dissolved oxygen concentrations to prevent offensive conditions as required in Section 302.203 of this Part. Quiescent and isolated sectors of General Use waters including but not limited to wetlands, sloughs, backwaters and waters below the thermocline in lakes and reservoirs must be maintained at sufficient dissolved oxygen concentrations to support their natural ecological functions and resident aquatic communities.
 

 
b) Except in those waters identified in Appendix D of this Part, the dissolved oxygen concentration in the main body of all streams, in the water above the thermocline of thermally stratified lakes and reservoirs, and in the entire water column of unstratified lakes and reservoirs must not be less than the following:
 
1) During the period of March through July,
 
A) 5.0 mg/L at any time; and

B)  6.0 mg/L as a daily mean averaged over 7 days.
 
2)  During the period of August through February,
 
A)  3.5 mg/L at any time;
 
B)  4.0 mg/L as a daily minimum averaged over 7 days; and
 
C)  5.5 mg/L as a daily mean averaged over 30 days.
 

 
c) The dissolved oxygen concentration in all sectors within the main body of all streams identified in Appendix D of this Part must not be less than:
 
1) During the period of March through July,

A)  5.0 mg/L at any time; and
 
B)  6.25 mg/L as a daily mean averaged over 7 days.
 

 
2) During the period of August through February,

A)  4.0 mg/L at any time;
 
B)  4.5 mg/L as a daily minimum averaged over 7 days; and
 
C)  6.0 mg/L as a daily mean averaged over 30 days.
 
d)  Assessing attainment of dissolved oxygen mean and minimum values.
 

     
1) Daily mean is the arithmetic mean of dissolved oxygen concentrations in 24 consecutive hours.
2) Daily minimum is the minimum dissolved oxygen concentration in 24 consecutive hours.
3) The measurements of dissolved oxygen used to determine attainment or lack of attainment with any of the dissolved oxygen standards in this Section must assure daily minima and daily means that represent the true daily minima and daily means.
4) The dissolved oxygen concentrations used to determine a daily mean or daily minimum should not exceed the air-equilibrated concentration.
5) “Daily minimum averaged over 7 days” means the arithmetic mean of daily minimum dissolved oxygen concentrations in 7 consecutive 24-hour periods.
 
6) “Daily mean averaged over 7 days” means the arithmetic mean of daily mean dissolved oxygen concentrations in 7 consecutive 24-hour periods.
 
7) “Daily mean averaged over 30 days” means is the arithmetic mean of daily mean dissolved oxygen concentrations in 30 consecutive 24-hour periods.

(Source: Amended at 32 Ill. Reg. __________, effective ________________)
 

 
302.Appendix D Section 302.206(d): Stream Segments for Enhanced Dissolved Oxygen Protection
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
Illinois
Aux Sable Creek
239
start 41.3982125891033-88.3307365155966GRUNDY
end 41.5221610266554-88.3153074461322KENDALL
Baker Creek
123
start 41.0993159446094-87.833779044559KANKAKEE
end 41.1187483257075-87.7916507082604KANKAKEE
Baptist Creek
160
start 40.5172643895406-90.9781701980636HANCOCK
end 40.5217773790395-90.9703232423026HANCOCK
Barker Creek
170
start 40.4730175690641-90.3623822544051FULTON
end 40.4505102531327-90.423698306895FULTON
Battle Creek
196
start 41.791467372356-88.6440656199133DEKALB
end 41.8454435074814-88.6580317835588DEKALB
Big Bureau Creek
209
start 41.2403303426443-89.3778305139628BUREAU
end 41.6599418992971-89.0880711727354LEE
Big Rock Creek
275
start 41.6325949399571-88.5379727020413KENDALL
end 41.7542831812644-88.5621629654129KANE
Blackberry Creek
271
start 41.6432480686252-88.451129393594KENDALL
end 41.7663693677829-88.3855968808499KANE
Boone Creek
284
start 42.3430701828297-88.2604646456881MCHENRY
end 42.3116813126792-88.3284649937798MCHENRY
Buck Creek
225
start 41.4305449377211-88.7732713228626LASALLE
end 41.4508806057478-88.919966063547LASALLE
403
start 40.6513984442885-88.8660496976016MCLEAN
end 40.6757825960266-88.8490439132056MCLEAN
Camp Creek
116
start 41.0119168530464-89.7317034650143STARK
end 41.0202988179758-89.6817209218761STARK
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
168
start 40.2936155016035-90.7791785207262MCDONOUGH
end 40.3985161419285-90.5089903510732MCDONOUGH
Camp Run
115
start 41.0119168530464-89.7317034650143STARK
end 41.0575944852479-89.6822685234528STARK
Cantway Slough
250
start 41.1654521279715-87.6179423055771KANKAKEE
end 41.1204910206261-87.6018847740212KANKAKEE
Cedar Creek
164
start 40.4187924503946-91.0119249544251HANCOCK
end 40.4320989747514-90.9816512014458HANCOCK
Central Ditch
17
start 40.2466345144431-89.8605138200519MASON
end 40.259146892407-89.8331744969958MASON
Clear Creek
70
start 40.2358631766436-89.1715114085864LOGAN
end 40.2817523596784-89.2105606026356MCLEAN
Coal Creek
173
start 40.6458316286298-90.2773695191768FULTON
end 40.6911917975894-90.0990104026141FULTON
Collins Run
243
start 41.4219631544372-88.3508108111242GRUNDY
end 41.4172036201222-88.3955434158999GRUNDY
Conover Branch
184
start 39.8376993452498-90.1465720267561MORGAN
end 39.8696939232648-90.1234898871846MORGAN
Coon Creek
60
start 40.1076562155273-89.0130117597621DEWITT
end 40.1755351290733-88.8857086715202DEWITT
Coop Branch
31
end 39.2042878811665-90.0972130791043MACOUPIN
end 39.1194481626997-89.9878509202749MACOUPIN
Coopers Defeat Creek
114
start 41.1557502062867-89.748162019475STARK
end 41.1485959333575-89.6944246708098STARK
Copperas Creek
88
start 40.4856512052475-89.8867983078194FULTON
end 40.549513691198-89.9011907117391FULTON
Court Creek
122
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 40.9184191403691-90.1108008628507KNOX
end 40.9349919352638-90.2673514797552KNOX
Cox Creek
177
start 40.0231674243157-90.1158780774246CASS
end 39.9657957063914-90.0180644049351CASS
Crane Creek
174
start 40.1328714038267-89.9709414534257MENARD
end 40.2466345144431-89.8605138200519MASON
Crow Creek
102
start 40.9323207251964-89.4264477600798MARSHALL
end 40.9663161180876-89.2558617294218MARSHALL
Deer Creek
59
start 40.117679723776-89.3801215076251LOGAN
end 40.1915602627115-89.1582023776838LOGAN
Dickerson Slough
421
start 40.3597968706068-88.3225685158141CHAMPAIGN
end 40.4568389800294-88.3442742579475FORD
Drummer Creek
423
start 40.37389931547-88.3480753423386CHAMPAIGN
end 40.479101489993-88.388698487066FORD
Dry Fork
35
start 39.1989703827155-89.9609795725648MACOUPIN
end 39.1445756951412-89.8876581181152MACOUPIN
Du Page River
268
start 41.4988385272507-88.2166248594859WILL
end 41.7019525201778-88.1476209409341WILL
Eagle Creek
392
start 41.1360015419764-88.8528525904771LASALLE
end 41.1291172842462-88.8664977236647LASALLE
East Aux Sable Creek
240
start 41.5221610266554-88.3153074461322KENDALL
end 41.6231669397764-88.2938779285952KENDALL
East Branch Big Rock Creek
277
start 41.7542830239271-88.5621632556731KANE
end 41.8161922949561-88.6002917634599KANE
East Branch Copperas Creek
47
start 40.549514632509-89.901189903351FULTON
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
end 40.6583152735498-89.8516717710553PEORIA
East Fork La Moine River
167
start 40.3962156185095-90.9339386121768HANCOCK
end 40.4506930058171-90.758703782814MCDONOUGH
East Fork Mazon River
256
start 41.1872307009926-88.2731640461448GRUNDY
end 41.0815161304671-88.3093601699244LIVINGSTON
East Fork Spoon River
110
start 41.2158736312898-89.6870256054763STARK
end 41.2603216291895-89.7311074496692BUREAU
Easterbrook Drain
410
start 40.3687232740908-88.5787269955356MCLEAN
end 40.3909243275675-88.5484031360558MCLEAN
Exline Slough
252
start 41.1187483257075-87.7916507082604KANKAKEE
end 41.3377194296138-87.674538578544WILL
Fargo Run
94
start 40.8110626738718-89.7625906815013PEORIA
end 40.7936211492847-89.7147157689809PEORIA
Ferson Creek
281
start 41.9275380999085-88.3177738518806KANE
end 41.9518312998438-88.3965138071814KANE
Fitch Creek
131
start 41.0629732421579-89.9929808862433KNOX
end 41.1048465021615-90.0171275726119KNOX
Forked Creek
265
start 41.312634893655-88.1518349597477WILL
end 41.4208599921871-87.8221168060732WILL
Forman Creek
129
start 41.0920068762041-90.1229512077171KNOX
end 41.061779692349-90.1373931430424KNOX
Fourmile Grove Creek
232
start 41.5880621752377-89.0154533767497LASALLE
end 41.6281572065102-89.0480036727754LEE
Fox Creek
121
start 41.2158736312898-89.6870256054763STARK
end 41.2178841576744-89.6378797955943BUREAU
Fox River
270
start 41.6177003859476-88.5558384703467KENDALL
end 41.7665361019038-88.3100243828453KANE
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
Friends Creek
56
start 39.9296881580789-88.7753341828841MACON
end 40.0511150621524-88.756810733868MACON
Furrer Ditch
175
start 40.259146892407-89.8331744807195MASON
end 40.256856262248-89.8235353908665MASON
Gooseberry Creek
138
start 41.0815161304671-88.3093601699244LIVINGSTON
end 41.0229178273291-88.3433997610298LIVINGSTON
181
start 41.2273512263311-88.3737634512576GRUNDY
end 41.1567969821084-88.3954921510714GRUNDY
Grindstone Creek
169
start 40.2936155016035-90.7791785207262MCDONOUGH
end 40.3128991202966-90.6514786739624MCDONOUGH
Hall Ditch
176
start 40.214043063866-89.8947856138658MASON
end 40.1996396083582-89.8430392085184MASON
Hallock Creek
101
start 40.9330251540704-89.523027406387PEORIA
end 40.9162496002415-89.5368879858621PEORIA
Haw Creek
125
start 40.8575772861862-90.2335091570553KNOX
end 40.9174343445877-90.3387634753254KNOX
Henline Creek
401
start 40.5867014223785-88.6971328093932MCLEAN
end 40.6247936449316-88.6315733675586MCLEAN
Henry Creek
100
start 40.932455717876-89.5256512687818PEORIA
end 40.9472322228041-89.5711427004422PEORIA
Hermon Creek
126
start 40.7818347201379-90.2738699961108KNOX
end 40.7628476930817-90.3372052339614KNOX
Hickory Creek
244
start 41.5038289458964-88.0990240076033WILL
end 41.4935392717868-87.8108342251738WILL
Hickory Grove Ditch
87
start 40.4870721779667-89.7285827911466TAZEWELL
end 40.4136575635669-89.7349507058786MASON
Hickory Run
93
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 40.8217198390551-89.7449749384213PEORIA
end 40.8581447502391-89.7622130910013PEORIA
Hillsbury Slough
416
start 40.3453953438371-88.3035309970523CHAMPAIGN
end 40.3928682378873-88.2265028280313CHAMPAIGN
Hodges Creek
34
start 39.2630316914552-90.1858200381692GREENE
end 39.2801974743086-90.1528766403572GREENE
Hurricane Creek
44
start 39.449376470161-90.5400508230403GREENE
end 39.4781872332274-90.4508986197452GREENE
Illinois River
236
start 41.3255740245957-88.9910230492306LASALLE
end 41.3986780470527-88.2686499362959GRUNDY
Indian Creek
120
start 40.988610901184-89.8221496834014STARK
end 41.2003389912185-89.9349435285117HENRY
182
start 39.8785447641605-90.3782080959549CASS
end 39.8234731084942-90.103743390331MORGAN
224
start 41.7480730242898-88.8741562924388DEKALB
end 41.7083887626958-88.9437996894049LEE
226
start 41.4400734113231-88.7627018786422LASALLE
end 41.7377348577433-88.8557728844589DEKALB
396
start 40.7701181840118-88.4858209632899LIVINGSTON
end 40.6469799222669-88.4812665778082LIVINGSTON
Iroquois River
253
start 41.0739205590002-87.8152251833303KANKAKEE
end 40.9614905075375-87.8149010739444IROQUOIS
447
start 40.7817769095357-87.7532807121524IROQUOIS
end 40.8174648935578-87.5342555764515IROQUOIS
Jack Creek
109
start 41.1283656948767-89.7699479168181STARK
end 41.150467875432-89.8374616586589STARK
Jackson Creek
246
start 41.4325013563553-88.1725611633353WILL
end 41.4638503957577-87.9160301224816WILL
Joes Creek
33
start 39.2801974743086-90.1528766403572GREENE
end 39.3757180969001-90.0772968234561MACOUPIN
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
Johnny Run
258
start 41.2826709079541-88.3633805819326GRUNDY
end 41.0807507198308-88.5801638050665LIVINGSTON
Jordan Creek
266
start 41.3044458242397-88.1279087273328WILL
end 41.3077177643453-88.1188984685001WILL
Judd Creek
106
start 41.089645284216-89.1847595119809MARSHALL
end 41.0429807674449-89.1339049242164MARSHALL
Kankakee River
248
start 41.3923135096469-88.2590124225285GRUNDY
end 41.1660752568715-87.526360971907KANKAKEE
Kickapoo Creek
57
start 39.9932216924528-88.8083252484687MACON
end 39.9987405799186-88.8205170598483MACON
65
start 40.1286520491088-89.4532728967436LOGAN
end 40.4376592310728-88.8667409562596MCLEAN
92
start 40.6548826785105-89.6134608723157TAZEWELL
end 40.9170471944911-89.6577393908301PEORIA
Kings Mill Creek
83
start 40.4558745105979-89.1642930044364MCLEAN
end 40.509184986927-89.0937965002854MCLEAN
La Harpe Creek
159
start 40.4678428297867-91.0424167497572HANCOCK
end 40.5172643895406-90.9781701980636HANCOCK
La Moine River
158
start 40.3320849972693-90.8997234923388MCDONOUGH
end 40.5923258750258-91.0177293656635HANCOCK
Lake Fork
61
start 40.0837107988142-89.3969397975165LOGAN
end 39.9367293000733-89.2343282851812LOGAN
Langan Creek
254
start 40.9614905075375-87.8149010739444IROQUOIS
end 40.9432018898477-88.0465558527168IROQUOIS
Lime Creek
214
start 41.4515003790233-89.5271752648714BUREAU
end 41.4951141474998-89.456554884734BUREAU
Little Indian Creek
183
start 39.8355964564522-90.1231971747256MORGAN
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
end 39.8658175367056-90.0423591294145MORGAN
227
start 41.5091299863247-88.7725444056074LASALLE
end 41.749433980972-88.8141442269697DEKALB
Little Kickapoo Creek
67
start 40.3336625070255-88.9736094275975MCLEAN
end 40.394785197415-88.9473142490326MCLEAN
Little Mackinaw River
82
start 40.4423190352496-89.4617848276975TAZEWELL
end 40.4481261917524-89.4329939054056TAZEWELL
Little Rock Creek
274
start 41.6345548769785-88.5384723455853KENDALL
end 41.7895688619816-88.6981590581244DEKALB
Little Sandy Creek
107
start 41.0912632622075-89.2247552498617MARSHALL
end 41.125352501365-89.1758716886846PUTNAM
Little Senachwine Creek
99
start 40.9533145540839-89.5292433956921PEORIA
end 41.0084439145565-89.5499765139822MARSHALL
Little Vermilion River
233
start 41.3237602050852-89.0811945323001LASALLE
end 41.5760289435671-89.0829047126545LASALLE
Lone Tree Creek
418
start 40.3750682121535-88.3819688457729CHAMPAIGN
end 40.3145980401842-88.4738655755984MCLEAN
Long Creek
163
start 40.4466427913955-91.0499607552846HANCOCK
end 40.4297652043359-91.1507109600489HANCOCK
Long Point Creek
68
start 40.2755311999445-89.0786438507327DEWITT
end 40.2549604211821-88.9826285651361DEWITT
394
start 41.038177645276-88.7908409579793LIVINGSTON
end 41.0018214714974-88.8534349418926LIVINGSTON
Mackinaw River
397
start 40.5796794158534-89.2813445945626TAZEWELL
end 40.5649627479232-88.478822725546MCLEAN
Macoupin Creek
32
start 39.1989703827155-89.9609795725648MACOUPIN
start 39.2121253451487-90.2312084410337JERSEY
Madden Creek
413
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 40.0943580002069-88.5400649488702PIATT
end 40.2109635906658-88.4943738561926PIATT
Masters Creek
220
start 41.4976109383336-89.4125473607076BUREAU
end 41.5439000049343-89.421988392756BUREAU
Masters Fork
217
start 41.4531024225454-89.4290492805799BUREAU
end 41.5702310455498-89.3821188149649BUREAU
Mazon River
257
start 41.3086768327676-88.3389845675056GRUNDY
end 41.1872307009926-88.2731640461448GRUNDY
Mendota Creek
234
start 41.5281666288805-89.1041764154672LASALLE
end 41.5282367334928-89.1224368860589LASALLE
Middle Branch of Copperas Creek
90
start 40.549514632509-89.901189903351FULTON
end 40.5980896362772-89.9368482699851FULTON
Middle Creek
165
start 40.3957329294144-90.9741776721721HANCOCK
end 40.3888894030526-91.0072502737366HANCOCK
Mill Creek
494
start 41.8213649020421-88.3222376599138KANE
end 41.9231053361497-88.4419826012614KANE
Mole Creek
390
start 41.0193910577853-88.8019375580673LIVINGSTON
end 40.9109452909954-88.9263176124884LIVINGSTON
Morgan Creek
272
start 41.6481172046369-88.4151168308869KENDALL
end 41.6530911245692-88.3631669287476KENDALL
Mud Creek
449
start 40.637099482441-87.5885960450541IROQUOIS
end 40.6100172186722-87.5261312404789IROQUOIS
Mud Run
117
start 41.0092425694765-89.7790957399812STARK
end 40.9876287937001-89.6785472090663STARK
Murray Slough
259
start 41.2428845425989-88.3615508333781GRUNDY
end 41.054741775769-88.5825975362008LIVINGSTON
Nettle Creek
237
start 41.3559056532822-88.4326806825019GRUNDY
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
end 41.3989525138118-88.5519708865374GRUNDY
Nippersink Creek
285
start 42.403479031235-88.1904263022916LAKE
end 42.408321560969-88.341299199739MCHENRY
289
start 42.3885864249526-88.3641081665149MCHENRY
end 42.4692291197455-88.4764236384547MCHENRY
North Branch Crow Creek
103
start 40.9663161180876-89.2558617294218MARSHALL
end 41.0005549578781-89.1943061363378MARSHALL
North Branch Nippersink Creek
286
start 42.4376632559979-88.2872504317539MCHENRY
end 42.4945866793007-88.3294075716268MCHENRY
North Creek
119
start 40.9486975483619-89.7633680090807PEORIA
end 40.9421533616142-89.7281078793964PEORIA
North Fork Lake Fork
62
start 39.9367293000733-89.2343282851812LOGAN
end 40.0523211989442-89.0999303242614DEWITT
North Fork Salt Creek
71
start 40.2675598120912-88.7867164044023DEWITT
end 40.3620541452609-88.7204600533309MCLEAN
Otter Creek
171
start 40.2161621556914-90.164317977292FULTON
end 40.3182822717998-90.3860609925548FULTON
279
start 41.9619670384069-88.3574449893747KANE
end 41.9903303640688-88.3568570687618KANE
393
start 41.1611802253124-88.8310854379729LASALLE
end 41.1541734588026-88.7148550047115LASALLE
Panther Creek
178
start 40.0231674243157-90.1158780774246CASS
end 39.9411115612757-90.0607356525317CASS
405
start 40.6607941387838-89.196034413193WOODFORD
end 40.8483817762616-89.0003562591212WOODFORD
Paw Paw Run
231
start 41.6177945875792-88.8847204360202LASALLE
end 41.6630271288718-88.9144064528509DEKALB
Pike Creek
216
start 41.5121637096396-89.3366888940457BUREAU
end 41.5707857354427-89.2125163729316BUREAU
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
388
start 40.8655185113965-88.7090974772719LIVINGSTON
end 40.7989226101833-88.7756316859923LIVINGSTON
Pond Creek
212
start 41.3494925800361-89.5685244208084BUREAU
end 41.3541221673156-89.6001721270724BUREAU
Poplar Creek
493
start 42.0127893042098-88.2799278350546KANE
end 42.0604682884044-88.151517184544COOK
Prairie Creek
69
start 40.2688606116755-89.1209318708141DEWITT
end 40.3183618654781-89.1150133167993MCLEAN
79
start 40.1610672222447-89.6159697428554MASON
end 40.3105388304102-89.4819788351989LOGAN
264
start 41.3410818305214-88.1859963163497WILL
end 41.4048430210988-87.9636949110551WILL
391
start 41.0691920852358-88.8106812576958LIVINGSTON
end 41.0162806406811-89.0122375626521LASALLE
Prairie Creek Ditch
81
start 40.242940205103-89.5831738921535LOGAN
end 40.268603376062-89.5902703680441LOGAN
Prince Run
118
start 40.9953442805941-89.7634490486344STARK
end 40.9486975483619-89.7633680090807PEORIA
Rob Roy Creek
495
start 41.6340658591268-88.530902327864KENDALL
end 41.7208669225124-88.4449822691918KENDALL
Rock Creek
180
start 39.9533586794244-89.7717217346798MENARD
end 39.9192042890665-89.881417605895MENARD
251
start 41.2029705333006-87.9860450524621KANKAKEE
end 41.2416733683013-87.9199539652218KANKAKEE
Rocky Run
221
start 41.2966432755716-89.5031050607007BUREAU
end 41.2892114895079-89.5271301009319BUREAU
Rooks Creek
386
start 40.9620056243899-88.737743684525LIVINGSTON
end 40.7615433072922-88.6752675977812LIVINGSTON
Salt Creek
58
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 40.1286520491088-89.4532728967436LOGAN
end 40.1404369482862-88.8817439726269DEWITT
409
start 40.2793653821328-88.6019348286105DEWITT
end 40.3687232740908-88.5787269955356MCLEAN
Sandy Creek
105
start 41.1083947129797-89.3471796913242PUTNAM
end 41.0855613697751-89.0792291942694MARSHALL
Sangamon River
408
start 40.0056362283258-88.6286241506431PIATT
end 40.4223231153926-88.67328493366MCLEAN
Senachwine Creek
96
start 40.929825860388-89.4632928486271PEORIA
end 41.0900318754938-89.5885134178247MARSHALL
Short Creek
162
start 40.4611057719393-91.0582083107674HANCOCK
end 40.4682735975769-91.0704506789577HANCOCK
Short Point Creek
389
start 40.9883827214271-88.7830008925065LIVINGSTON
end 40.8951301673701-88.8749997260932LIVINGSTON
Silver Creek
111
start 41.2185762138697-89.6793069447094STARK
end 41.2431713087936-89.6494927441058BUREAU
South Branch Crow Creek
104
start 40.9663161180876-89.2558617294218MARSHALL
end 40.9410075148431-89.1948285503851MARSHALL
South Branch Forked Creek
267
start 41.2631372965881-88.0315238211836WILL
end 41.292604367733-87.9621751169561KANKAKEE
South Fork Lake Fork
63
start 39.9367293000733-89.2343282851812LOGAN
end 39.9674631778105-89.0884701339793MACON
South Fork Vermilion River
395
start 40.7701181840118-88.4858209632899LIVINGSTON
end 40.7234241258087-88.355790853647LIVINGSTON
Spoon River
3
start 40.883272448156-90.0994555125119KNOX
end 41.2158736312898-89.6870256054763STARK
Spring Creek
161
start 40.5838583294631-91.0397056763892HANCOCK
end 40.595079516268-91.0572149428165HANCOCK
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
166
start 40.4506930058171-90.758703782814MCDONOUGH
end 40.5047702003096-90.7202911238868MCDONOUGH
223
start 41.3114342012759-89.1969933188526BUREAU
end 41.5341774964794-89.1599030581214LASALLE
Stevens Creek
55
start 39.833172054334-89.008501860042MACON
end 39.8725126750168-88.9902570309468MACON
Sugar Creek
76
start 40.1505909949415-89.6335239996087MENARD
end 40.3515916252906-89.1626966142058MCLEAN
124
start 40.9273148603695-90.1168866799652KNOX
end 40.9407150872189-90.126984172004KNOX
448
start 40.7817769095357-87.7532807121524IROQUOIS
end 40.650106664471-87.5259225515566IROQUOIS
Sutphens Run
228
start 41.5813276727649-88.9196815109252LASALLE
end 41.5940767755281-89.0434408697488LASALLE
Swab Run
127
start 40.8043825531334-90.0417502151246KNOX
end 40.8089204046364-89.9959890937906KNOX
Tenmile Creek
64
start 40.1166122038468-89.0605809659338DEWITT
end 40.1573804135529-88.9870426654374DEWITT
Timber Creek
77
start 40.3499903738803-89.1633832938062MCLEAN
end 40.3824906556377-89.0653243216353MCLEAN
Trim Creek
249
start 41.1679695055755-87.6275919071884KANKAKEE
end 41.3235679470585-87.6273348723156WILL
Turkey Creek
172
start 40.5312633037562-90.2784734138591FULTON
end 40.6100168551688-90.1683886238592FULTON
402
start 40.6346912128201-88.8256051903746MCLEAN
end 40.6636296144043-88.7848217949076MCLEAN
Tyler Creek
283
start 42.057069434075-88.2869209701875KANE
end 42.0886074301339-88.3939734393445KANE
Unnamed Tributary
230
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 41.6008353940091-88.9239309686064LASALLE
end 41.6393800996109-88.95237726256LEE
406
start 40.8483817762616-89.0003562591212WOODFORD
end 40.8446321845668-88.9879480330159WOODFORD
Unnamed Tributary of Big Bureau Creek
222
start 41.2923889187328-89.4849627504116BUREAU
end 41.2746773653832-89.4967232161933BUREAU
Unnamed Tributary of Coopers Defeat Creek
113
start 41.1485959333575-89.6944246708098STARK
end 41.1432423938169-89.6549152326434STARK
Unnamed Tributary of Dickerson Slough
422
start 40.4068214049304-88.3388760698826FORD
end 40.4286849455119-88.3118606581845FORD
Unnamed Tributary of Drummer Creek
425
start 40.430183509928-88.3944923485681FORD
end 40.4228198536222-88.4420280012069FORD
Unnamed Tributary of East Branch of Copperas Creek
89
start 40.59257130763-89.8385498955685PEORIA
start 40.59257130763-89.8385498955685PEORIA
Unnamed Tributary of East Fork of Spoon River
112
start 41.1911731339471-89.6948993736812STARK
end 41.1958777466981-89.6635132189552STARK
Unnamed Tributary of Indian Creek
185
start 39.8195431621523-90.231206997871MORGAN
end 39.7997709298014-90.2444898890822MORGAN
229
start 41.5989641246871-88.913295513256LASALLE
end 41.6212302072922-88.9971274321449LASALLE
Unnamed Tributary of Jackson Creek
247
start 41.4328713295604-88.0777949404827WILL
end 41.4181859202087-88.0389954976751WILL
Unnamed Tributary of Johnny Run
261
start 41.1315090714299-88.5704499691513GRUNDY
end 41.1211734141418-88.5813177275807GRUNDY
Unnamed Tributary of Kickapoo Creek
66
start 40.4376592310728-88.8667409562596MCLEAN
     
end 40.4499435649154 -88.7941853627565   MCLEAN
95
start 40.843847234267-89.6598940056171PEORIA
end 40.8376970553513-89.655765678658PEORIA
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
Unnamed Tributary of Lone Tree Creek
417
start 40.3145980401842-88.4738655755984MCLEAN
end 40.3084681821929-88.4721825603404MCLEAN
419
start 40.3200878690807-88.4758169784284MCLEAN
end 40.3246054213609-88.502979969789MCLEAN
420
start 40.3555955038811-88.4486860730234CHAMPAIGN
end 40.3553786361326-88.4890287857383MCLEAN
Unnamed Tributary of Mackinaw River
398
start 40.5649627479232-88.478822725546MCLEAN
end 40.4956570103387-88.5106552787079MCLEAN
399
start 40.558742486097-88.5447290418444MCLEAN
end 40.532461937187-88.5550436512012MCLEAN
400
start 40.5536214693649-88.6155771894066MCLEAN
end 40.5386135050112-88.6150100834316MCLEAN
Unnamed Tributary of Masters Creek
219
start 41.5407471962821-89.4154110620948BUREAU
end 41.5452528261938-89.4136798690744BUREAU
Unnamed Tributary of Masters Fork
218
start 41.510430587881-89.3900507138719BUREAU
end 41.6181398940954-89.2965280984998LEE
Unnamed Tributary of Nettle Creek
238
start 41.4088814108094-88.5216683950888GRUNDY
end 41.4186133676397-88.5339604493093GRUNDY
Unnamed Tributary of Nippersink Creek
255
start 42.4692291197455-88.4764236384547MCHENRY
end 42.4695432978934-88.5110499918451MCHENRY
288
start 42.4176539163554-88.3444740410368MCHENRY
end 42.4179067763647-88.3502762821058MCHENRY
290
start 42.3969278131381-88.4109784072142MCHENRY
end 42.3875994074602-88.4491666706176MCHENRY
Unnamed Tributary of North Fork of Salt Creek
72
start 40.3598944577027-88.7302360564635MCLEAN
end 40.3817246400667-88.7481607936989MCLEAN
73
start 40.3620541452609-88.7204600533309MCLEAN
end 40.3690272117515-88.6961244618476MCLEAN
75
start 40.2987649882463-88.7603546124853MCLEAN
end 40.3051172967471-88.7525145171727MCLEAN
Unnamed Tributary of Panther Creek
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
179
start 39.9411115612757-90.0607356525317CASS
end 39.9350887523192-90.047762075576CASS
Unnamed Tributary of Pond Creek
211
start 41.3541221673156-89.6001721270724BUREAU
end 41.3352313411595-89.5875580793812BUREAU
Unnamed Tributary of Prairie Creek
78
start 40.2086608970772-89.6103029312127MASON
end 40.2239585519289-89.638616348402MASON
80
start 40.3105388304102-89.4819788351989LOGAN
end 40.3114851545122-89.4410508250634LOGAN
Unnamed Tributary of Rooks Creek
387
start 40.7615433072922-88.6752675977812LIVINGSTON
end 40.7348742139519-88.6985073106457MCLEAN
Unnamed Tributary of Salt Creek
412
start 40.3090617343957-88.6002511568763MCLEAN
end 40.3165662374132-88.6011454430269MCLEAN
Unnamed Tributary of Sandy Creek
108
start 41.0816545465891-89.0921996326175MARSHALL
end 41.0690044849354-89.0872784559417MARSHALL
Unnamed Tributary of Sangamon River
414
start 40.2187198550443-88.3726776422252CHAMPAIGN
end 40.207759150969-88.3556670563292CHAMPAIGN
415
start 40.2618571248343-88.3804307110291CHAMPAIGN
end 40.2604569179243-88.4076966986332CHAMPAIGN
Unnamed Tributary of Senachwine Creek
97
start 41.0729094906046-89.5194162172506MARSHALL
end 41.1005615839111-89.5247542292286MARSHALL
98
start 41.0008160428297-89.5071527441621MARSHALL
end 41.0407981005047-89.5430844273656MARSHALL
Unnamed Tributary of Walnut Creek
130
start 41.0811500581416-90.0632765005186KNOX
end 41.0847653353348-90.0680765817376KNOX
132
start 41.0602585608831-89.9869046205873KNOX
end 41.0721601609241-89.9735120056073STARK
133
start 41.0262443553352-89.9515238620326STARK
end 41.0340788244836-89.924721175772STARK
Unnamed Tributary of West Bureau Creek
215
start 41.4606455355906-89.5251264675481BUREAU
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
end 41.4958522845312-89.5472802493082BUREAU
Unnamed Tributary of West Fork Sugar Creek
85
start 40.3381506914873-89.2954898975603TAZEWELL
end 40.3660114221746-89.2448498120596MCLEAN
86
start 40.3105145326502-89.3291625265707LOGAN
end 40.3299182729366-89.3779530037535TAZEWELL
Valley Run
241
start 41.4172036201222-88.3955434158999GRUNDY
end 41.5039796750174-88.5041976708714KENDALL
Vermilion Creek
235
start 41.4768291322914-89.0571044195371LASALLE
end 41.5338604103044-89.0473804190906LASALLE
Vermilion River
385
start 41.3202746199326-89.067686548398LASALLE
end 40.8817674383366-88.6504671722722LIVINGSTON
Walnut Creek
128
start 40.9597510841493-89.9769499175619PEORIA
end 41.12653217294-90.2059192933585KNOX
404
start 40.6253040823561-89.239009045057WOODFORD
end 40.7670065190601-89.3054156233977WOODFORD
Waubonsie Creek
273
start 41.6864691774875-88.3543291766866KENDALL
end 41.727653072306-88.2817226140407KANE
Waupecan Creek
262
start 41.3345412028515-88.4648617458928GRUNDY
end 41.1880870688571-88.5889392759762LASALLE
Welch Creek
278
start 41.7390229211455-88.5133300234389KANE
end 41.7542282081589-88.4963865174814KANE
West Branch Big Rock Creek
276
start 41.7542830239271-88.5621632556731KANE
end 41.791467372356-88.6440656199133DEKALB
West Branch Drummer Creek
424
start 40.4348513301682-88.3934764271309FORD
end 40.4490333768479-88.4056995893214FORD
West Branch Du Page River
269
start 41.7019525201778-88.1476209409341WILL
end 41.7799425869794-88.1712650214772DUPAGE
West Branch of Easterbrook Drain
411
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 40.3633709579832-88.5816306009141MCLEAN
end 40.3762064931712-88.5843753634505MCLEAN
West Branch of Horse Creek
263
start 41.2492485076225-88.1312055809841WILL
end 41.0019131557324-88.1364114459172KANKAKEE
West Branch of Lamarsh Creek
91
start 40.5615978513207-89.6991824445749PEORIA
end 40.640281675188-89.7388615248892PEORIA
West Branch Panther Creek
407
start 40.7528335084236-89.1030067348099WOODFORD
end 40.7954060105963-89.1900600098668WOODFORD
West Bureau Creek
213
start 41.3209910742583-89.5195916727401BUREAU
end 41.478267808168-89.5152211006131BUREAU
West Fork Mazon River
260
start 41.2530670781541-88.3508667933585GRUNDY
end 41.0302502359071-88.5226194555857LIVINGSTON
West Fork Salt Creek
74
start 40.317360196629-88.7559599297755MCLEAN
end 40.3372561693307-88.8039670869984MCLEAN
West Fork Sugar Creek
84
start 40.2844404292499-89.332075650855LOGAN
end 40.4558745105979-89.1642930044364MCLEAN
Wolf Creek
497
start 41.1540042913791-88.8612912917747LASALLE
end 41.1611802253124-88.8310854379729LASALLE
Kaskaskia
Bearcat Creek
37
start 39.0121682814832-89.5317265036074BOND
end 39.0568357269204-89.4889786056249MONTGOMERY
Becks Creek
45
start 39.1565938305703-88.9491156388975FAYETTE
end 39.3602481794208-89.0227919838743SHELBY
Brush Creek
39
start 39.1385354787129-89.5805305687638MONTGOMERY
end 39.1539913389194-89.561368040102MONTGOMERY
Cress Creek
41
start 39.1652709439739-89.5012992382647MONTGOMERY
end 39.1962551507602-89.5131844155481MONTGOMERY
Dry Fork
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
43
start 39.036113738887-89.2488135289512FAYETTE
end 39.1033131262537-89.2984242244004MONTGOMERY
East Fork Shoal Creek
23
start 38.8310032253066-89.4990300331039BOND
end 38.9226451880864-89.4117554251748BOND
Gerhardt Creek
27
start 38.3445550793694-90.0600653224456ST. CLAIR
end 38.367857922464-90.0997565611344MONROE
Hurricane Creek
42
start 38.9180334233238-89.2472989134191FAYETTE
end 39.2167946546678-89.2767284135051MONTGOMERY
Loop Creek
21
start 38.4738791704891-89.8286629587977ST. CLAIR
end 38.4996759642082-89.9058988238884ST. CLAIR
Middle Fork Shoal Creek
40
start 39.0848984732588-89.5438724131899MONTGOMERY
end 39.1868483992515-89.4798528829252MONTGOMERY
Mitchell Creek
48
start 39.1565938305703-88.9491156388975FAYETTE
end 39.3191569074355-88.9291931738519SHELBY
Mud Creek
51
start 39.4078984061571-88.8964126852371SHELBY
end 39.4786612118046-88.9523280946578SHELBY
Ninemile Creek
30
start 38.0441291788376-89.9112042263573RANDOLPH
end 38.0507383485977-89.8278402421236RANDOLPH
Opossum Creek
46
start 39.2718719283603-89.006345202583SHELBY
end 39.2833737967471-89.0555186821259SHELBY
Prairie du Long Creek
24
start 38.2583950460692-89.9674114204896MONROE
end 38.3425597902873-90.0517323138269ST. CLAIR
Robinson Creek
50
start 39.3519556417502-88.8434641389225SHELBY
end 39.5215530679793-88.8331635597113SHELBY
Rockhouse Creek
25
start 38.279441694169-90.0367398173562MONROE
end 38.2999005789932-90.1039357731424MONROE
Section Creek
49
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 39.1835497280833-88.9455894742885FAYETTE
end 39.1959160048126-88.961892707007FAYETTE
Shoal Creek
22
start 38.4831106563982-89.5775456200079WASHINGTON
end 38.5557239981111-89.4968640710432CLINTON
36
start 38.8310032008922-89.4990300493802BOND
end 39.0848755752581-89.5439018081354MONTGOMERY
Silver Creek
20
start 38.3369025707936-89.8753691916515ST. CLAIR
end 38.5568068204478-89.8305698867169ST. CLAIR
Stringtown Branch
53
start 39.7138824796477-88.6677549810426MOULTRIE
end 39.7363136714592-88.6944718913546MOULTRIE
Unnamed Tributary of Gerhardt Creek
26
start 38.367857922464-90.0997565611344MONROE
end 38.3742880966457-90.1107074126403MONROE
Unnamed Tributary of Okaw River
54
start 39.734248747064-88.6620801587617MOULTRIE
end 39.80990395294-88.6969360645412PIATT
Walters Creek
28
start 38.3425597902873-90.0517323138269ST. CLAIR
end 38.3445550793694-90.0600653224456ST. CLAIR
West Fork Shoal Creek
38
start 39.1385354787129-89.5805305687638MONTGOMERY
end 39.1877434015581-89.6041666305308MONTGOMERY
West Okaw River
52
start 39.6158126349278-88.7105522558061MOULTRIE
end 39.7564321977535-88.630211952428MOULTRIE
Mississippi River
Apple River
372
start 42.3210892387922-90.2520915343109JO DAVIESS
end 42.5078007598632-90.1320538371008JO DAVIESS
Bear Creek
199
start 40.1421908412793-91.322057103417ADAMS
end 40.3507607406412-91.1831593883194HANCOCK
Bigneck Creek
205
start 40.1189668648562-91.2247381726013ADAMS
end 40.118891177483-91.1409739765636ADAMS
Burton Creek
192
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 39.8643091712617-91.343323220756ADAMS
end 39.92393403238-91.2381482737218ADAMS
Camp Creek
140
start 41.2607621817314-90.514303172809MERCER
end 41.3114464274682-90.2476056448033HENRY
142
start 41.2202380211465-90.895164796358MERCER
end 41.2787933006746-90.6950345992843MERCER
Carroll Creek
349
start 42.1027782814517-90.0265311556732CARROLL
end 42.0906369943302-89.8985337135691CARROLL
Clear Creek
6
start 37.4821139304798-89.377768200259UNION
end 37.5377402977406-89.331689550578UNION
381
start 42.4468385101031-90.0472460146999JO DAVIESS
end 42.4780763391708-90.035127804618JO DAVIESS
Coon Creek
376
start 42.4035528739642-90.1272819897867JO DAVIESS
end 42.4347098804951-90.1169407822902JO DAVIESS
Copperas Creek
148
start 41.3717279574558-90.901871458269ROCK ISLAND
end 41.3616090539824-90.7468725613692ROCK ISLAND
Deep Run
155
start 40.7779166934519-90.9639489255706HENDERSON
end 40.794076798068-90.9474772904134HENDERSON
Dixson Creek
154
start 40.7684181600505-90.9376123103323HENDERSON
end 40.7650613473293-90.9262679175808HENDERSON
Dutch Creek
4
start 37.4593003249666-89.3688365937935UNION
end 37.4147572383786-89.2744790735331UNION
East Fork Galena River
383
start 42.450241615252-90.3876497193745JO DAVIESS
end 42.4876693698893-90.286894403861JO DAVIESS
Edwards River
145
start 41.1459068953479-90.9832855425151MERCER
end 41.2835429634312-90.1022166001482HENRY
Eliza Creek
146
start 41.2754465656779-90.9740195834639MERCER
end 41.2948140261561-90.8870757880317MERCER
Ellison Creek
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
153
start 40.7615810139869-91.0723400800456HENDERSON
end 40.7295594797542-90.7480413061409WARREN
Galena River
382
start 42.450241615252-90.3876497193745JO DAVIESS
end 42.5068721036534-90.390459616835JO DAVIESS
Green Creek
5
start 37.4514943718452-89.3379244013686UNION
end 37.4666314694209-89.3048476846202UNION
Hadley Creek
188
start 39.7025380326419-91.1396851101986PIKE
end 39.7351716794518-90.9664567571417PIKE
Hells Branch
378
start 42.3582317355027-90.185076448587JO DAVIESS
end 42.4166702490621-90.1660286242329JO DAVIESS
Henderson Creek
134
start 41.0518601460692-90.652709618504WARREN
end 41.0728998007979-90.3331881878676KNOX
150
start 40.8788582366336-90.9641994146698HENDERSON
end 40.989888583038-90.8698875032336HENDERSON
Hillery Creek
144
start 41.2699394405307-90.2020116075301HENRY
end 41.2553101029329-90.1954503442612HENRY
Honey Creek
157
start 40.7000823335975-91.0347691132118HENDERSON
end 40.7064734203141-90.8589436695132HENDERSON
186
start 39.4871465283426-90.7799240715991PIKE
end 39.5633421986505-90.8011460205638PIKE
207
start 40.1052246871151-91.2149469620062ADAMS
end 40.0689996865178-91.2253825583113ADAMS
Hutchins Creek
7
start 37.5043385818368-89.3755380391598UNION
end 37.58788138261-89.3917584202331UNION
Little Bear Creek
194
start 40.3213003292038-91.2390256840921HANCOCK
end 40.302753021887-91.3102530307924HANCOCK
Little Creek
200
start 40.1807360433073-91.2803860136891ADAMS
end 40.230127123031-91.3051461065984HANCOCK
McCraney Creek
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
189
start 39.7167396162723-91.1729844320811PIKE
end 39.8572624790589-91.0907175471865ADAMS
Mill Creek
191
start 39.8643091712617-91.343323220756ADAMS
end 39.9675786362521-91.2477003180771ADAMS
377
start 42.3539782358808-90.1879698650198JO DAVIESS
end 42.4518923573772-90.2485882677025JO DAVIESS
496
start 38.9472270910927-90.2956721236088JERSEY
end 38.9871246152411-90.3431576290565JERSEY
Mississippi River
2
end 37.1887629940337-89.4576720472899ALEXANDER
29
start 38.8664117755941-90.1477786925267MADISON
end 38.327795025976-90.3709302644266MONROE
384
start 42.5079432477656-90.6430378486115JO DAVIESS
end 41.5746193723759-90.392321397091ROCK ISLAND
440
start 39.326689248302-90.8243988873681CALHOUN
end 39.8935238218567-91.4437639810547ADAMS
Mud Creek
202
start 40.1812148450863-91.2785060826782ADAMS
end 40.1852755387137-91.2660018265735ADAMS
Nichols Run
156
start 40.7735451176215-90.9672827833242HENDERSON
end 40.7648298879037-90.9675416302885HENDERSON
North Henderson Creek
136
start 41.0973619647032-90.7191141378965MERCER
end 41.119743833988-90.4494190524502MERCER
Parker Run
141
start 41.2623500459087-90.4891341819923MERCER
end 41.2260011828886-90.4145431241447HENRY
Pigeon Creek
190
start 39.7143204171354-91.2372670411405PIKE
end 39.8220301600964-91.2087922935523ADAMS
Pope Creek
137
start 41.1401437091914-90.8116816399802MERCER
end 41.1394137238591-90.2877112230995KNOX
Sixmile Creek
187
start 39.4592604039597-90.8902507134236PIKE
end 39.5431657559583-90.8891598316201PIKE
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
Slater Creek
198
start 40.291601584329-91.2423526162923HANCOCK
end 40.2822885732908-91.2189777154329HANCOCK
Smith Creek
152
start 40.9297989285848-90.9146232873076HENDERSON
end 40.9291958384872-90.7919464822621HENDERSON
South Edwards River
139
start 41.2656645104853-90.2611866223557HENRY
end 41.1927071399434-90.0393078982573HENRY
South Fork Apple River
380
start 42.4468385101031-90.0472460146999JO DAVIESS
end 42.4176188464167-89.9845802036023JO DAVIESS
South Fork Bear Creek
203
start 40.1677973436879-91.2933473698779ADAMS
end 40.0950329934447-91.0607522810856ADAMS
South Henderson Creek
135
start 41.0188478643653-90.4811337762604WARREN
end 41.0121123609019-90.4338464913801KNOX
151
start 40.8788582366336-90.9641994146698HENDERSON
end 40.8534764362853-90.8707263659685HENDERSON
Straddle Creek
301
start 42.0906369943302-89.8985337135691CARROLL
end 42.1316680929413-89.783599495409CARROLL
Thurman Creek
204
start 40.1277667094818-91.234525810555ADAMS
end 40.1580795200863-91.1501036788115ADAMS
Tournear Creek
193
start 39.9042285951329-91.2447718289928ADAMS
end 39.8738503674823-91.1658282439773ADAMS
Unnamed Tributary of Apple River
375
start 42.3613497834653-90.1603277978963JO DAVIESS
end 42.3651703478401-90.1182227692179JO DAVIESS
Unnamed Tributary of Bear Creek
197
start 40.3187160045841-91.2379753573306HANCOCK
end 40.3220475782343-91.2218711128768HANCOCK
201
start 40.2483484763178-91.2634157983708HANCOCK
end 40.2576281291385-91.2420554576986HANCOCK
Unnamed Tributary of Copperas Creek
149
start 41.3759130587612-90.8569366994939ROCK ISLAND
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
end 41.3735944469795-90.829794872711ROCK ISLAND
Unnamed Tributary of Furnace Creek
373
start 42.3419228115146-90.2583358633166JO DAVIESS
end 42.3737126096251-90.2971522307335JO DAVIESS
374
start 42.3419228115146-90.2583358633166JO DAVIESS
end 42.3615209718591-90.24931703774JO DAVIESS
Unnamed Tributary of South Edwards River
143
start 41.2011516193172-90.1850818577344HENRY
end 41.1943841818099-90.1839265246101HENRY
Unnamed Tributary of South Fork of Bear Creek
206
start 40.0797919556019-91.1461193615862ADAMS
end 40.0587441356106-91.1467388825794ADAMS
West Fork of Apple River
379
start 42.4777531846594-90.1103501186504JO DAVIESS
end 42.4739843218597-90.1321517307332JO DAVIESS
West Fork of Bear Creek
195
start 40.3385207135212-91.2203393068898HANCOCK
end 40.3592824400704-91.2334357995319HANCOCK
Yankee Branch
147
start 41.2850778212191-90.9379823025264MERCER
end 41.2926277702981-90.9335620769218MERCER
Ohio
Big Creek
16
start 37.4366764302436-88.3127424957005HARDIN
end 37.5591274535694-88.3148730216063HARDIN
Big Grand Pierre Creek
13
start 37.4163002207384-88.4338876873615POPE
end 37.5702304746463-88.4292613661871POPE
Hayes Creek
10
start 37.4452331751972-88.7114120959417JOHNSON
end 37.4559134065693-88.6286228702431POPE
Hicks Branch
14
start 37.5432903813926-88.4245265989312POPE
end 37.5391971894773-88.4135144509885HARDIN
Little Lusk Creek
12
start 37.4991426291527-88.5277357332102POPE
end 37.5247950767618-88.5017934865946POPE
Little Saline River
9
start 37.6429893859023-88.6229273282692SALINE
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
end 37.5783125058777-88.7169929932876JOHNSON
Lusk Creek
11
start 37.3685952948804-88.4926140087969POPE
end 37.5649232438096-88.5644984122843POPE
Mississippi River
2
start 36.9810279805712-89.1311552055554ALEXANDER
Ohio River
1
start 36.9810279805712-89.1311552055554ALEXANDER
end 37.7995447392016-88.0255709974801GALLATIN
Simmons Creek
15
start 37.4274681380208-88.4392381154217POPE
end 37.4644921054999-88.4850750109356POPE
South Fork Saline River
8
start 37.6372646144582-88.6447143188352SALINE
end 37.6650992000287-88.7471054185807WILLIAMSON
Unnamed Tributary of Big Creek
18
start 37.4816237108967-88.3412279259479HARDIN
end 37.4836843600581-88.3434390004066HARDIN
Wabash River
488
start 37.7995447392016-88.0255709974801GALLATIN
Rock
Beach Creek
302
start 41.8989215290323-89.121081932608OGLE
end 41.8637759544565-89.185844184387LEE
Beaver Creek
322
start 42.2551087433884-88.9247700103803BOONE
end 42.4341346635117-88.7603784300954BOONE
Black Walnut Creek
341
start 42.1132080942552-89.2141520188153OGLE
end 42.061557908797-89.2316600156935OGLE
Brown Creek
335
start 42.3568412672282-89.4493817584574STEPHENSON
end 42.3697340053709-89.4802304815634STEPHENSON
Buffalo Creek
358
start 41.9242552302868-89.6809355972221WHITESIDE
end 41.9752373833258-89.6243677263482OGLE
Cedar Creek
337
start 42.3709196286357-89.670256711355STEPHENSON
end 42.3896058186609-89.5870343171161STEPHENSON
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
Coal Creek
208
start 41.3941767873198-89.8287586795479BUREAU
end 41.2930847238959-89.6659810678663BUREAU
Coon Creek
304
start 42.0365871032824-89.489365571257OGLE
end 42.0550520228278-89.4762995939105OGLE
326
start 42.254519734978-88.7945563884938BOONE
end 42.1336677087989-88.6039205825106DEKALB
Crane Grove Creek
371
start 42.2656461748962-89.6058461735176STEPHENSON
end 42.2317224844045-89.5804359629382STEPHENSON
Deer Creek
307
start 42.1046195671697-88.7267155451459DEKALB
end 42.1076541965304-88.6684575625598DEKALB
Dry Creek
332
start 42.4322162336943-89.0509181181504WINNEBAGO
end 42.4892211712754-88.9789486331688WINNEBAGO
East Branch South Branch of Kishwaukee River
306
start 42.0108038948242-88.7236807475971DEKALB
end 41.9822037358546-88.5449399063616KANE
East Fork Mill Creek
343
start 42.1402053009442-89.2945061380348OGLE
end 42.1744627607887-89.268245093523OGLE
Elkhorn Creek
350
start 41.8392614813286-89.6956810578758WHITESIDE
end 42.0864514128748-89.636841111792OGLE
Franklin Creek
303
start 41.8885909580789-89.4120344682789OGLE
end 41.830393186845-89.3092915487959LEE
Goose Creek
356
start 41.9282951879448-89.692114617634WHITESIDE
end 41.9476422569681-89.6849104470831OGLE
Green River
359
start 41.6266589513433-89.5688644755145LEE
end 41.8177589430141-89.1263088319088LEE
Kilbuck Creek
312
start 42.1838622639314-89.1301689015062WINNEBAGO
end 41.9181917577798-88.9212387567239DEKALB
Kingsbury Creek
311
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 42.1077794424363-88.8726630666396DEKALB
end 42.1579325310556-88.8548684690422BOONE
Kishwaukee River
318
start 42.1866384939252-89.1320796977525WINNEBAGO
end 42.2666635150817-88.5250450377336MCHENRY
Kyte River
295
start 41.9881250432719-89.3232327202272OGLE
end 41.9206998470585-89.0576692414087OGLE
Leaf River
345
start 42.093677393629-89.3249228482157OGLE
end 42.1545774626081-89.5725820219443OGLE
Lost Creek
368
start 42.245723132043-89.7807765552299STEPHENSON
end 42.2314500223394-89.7709518073782STEPHENSON
Middle Creek
344
start 42.1559584011258-89.2911997709031OGLE
end 42.1737499306461-89.2931763612625OGLE
Mill Creek
342
start 42.1206847838382-89.2792143996076OGLE
end 42.2092574596508-89.3358557551327WINNEBAGO
Mosquito Creek
323
start 42.3066628798583-88.9047855300292BOONE
end 42.3100003482313-88.9099328193755BOONE
327
start 42.246521748985-88.7802719043895BOONE
end 42.1906300595167-88.7849304281662BOONE
Mud Creek
325
start 42.2592878387497-88.7503449689069BOONE
end 42.2805097009077-88.7381130663589BOONE
346
start 42.1301628959448-89.4043328758949OGLE
end 42.1639762007661-89.4554911246235OGLE
North Branch Kishwaukee River
320
start 42.2655855837644-88.5514660318739MCHENRY
end 42.4163330454161-88.5232715616737MCHENRY
North Branch Otter Creek
292
start 42.4412940471901-89.3074016078782WINNEBAGO
end 42.4570625094589-89.356265092275WINNEBAGO
North Fork Kent Creek
333
start 42.2621663352674-89.0944316410734WINNEBAGO
end 42.310438304708-89.1651357273603WINNEBAGO
Otter Creek
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
291
start 42.4565457866811-89.2410171137247WINNEBAGO
end 42.4412940471901-89.3074016078782WINNEBAGO
348
start 42.1345277930786-89.411492883497OGLE
end 42.1911608097275-89.4222625773931OGLE
Owens Creek
310
start 42.1012605056104-88.8850996053184DEKALB
end 41.994362186304-88.8506687869106DEKALB
Pine Creek
305
start 41.9113031895505-89.452879176459OGLE
end 42.0376146514025-89.4909007464322OGLE
Piscasaw Creek
324
start 42.2618063936707-88.8176068924198BOONE
end 42.3916885547221-88.7041339551642MCHENRY
Raccoon Creek
328
start 42.4479288873423-89.098286193015WINNEBAGO
end 42.4829761640917-89.1400856130022WINNEBAGO
Reid Creek
353
start 41.8644109921615-89.5919014348703LEE
end 41.9135187969506-89.5728723309406OGLE
Richland Creek
336
start 42.3456275295301-89.6832413426115STEPHENSON
end 42.5047442687577-89.6477619118761STEPHENSON
Rock River
294
start 41.9881250432719-89.3232327202272OGLE
end 42.4962174640048-89.0418910839077WINNEBAGO
Rock Run
490
start 42.3211872463585-89.4237342452712STEPHENSON
end 42.4281098959774-89.4483616268915STEPHENSON
Rush Creek
321
start 42.2560676137827-88.7031592940742MCHENRY
end 42.4031741332744-88.5930626223964MCHENRY
Silver Creek
338
start 42.0611717976691-89.335901928201OGLE
end 42.0866765435436-89.3839889015445OGLE
Skunk Creek
354
start 41.8794703976699-89.7072621672884WHITESIDE
end 41.897582187238-89.7290746844729WHITESIDE
South Branch Kishwaukee River
308
start 42.2001609257306-88.9840657029051WINNEBAGO
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
end 41.9015798699947-88.7706697182685DEKALB
315
start 42.2627093767756-88.5609522875415MCHENRY
end 42.1066209842679-88.4620443477841KANE
South Branch of Otter Creek
280
start 42.4412940471901-89.3074016078782WINNEBAGO
end 42.4343122756071-89.3600650183381WINNEBAGO
South Fork of Leaf River
347
start 42.1296104494647-89.4546456401589OGLE
end 42.1085718337046-89.5037134270228OGLE
South Kinnikinnick Creek
330
start 42.419961259532-89.018119476068WINNEBAGO
end 42.4190921988888-88.8710507717794BOONE
Spring Creek
339
start 42.0709215390383-89.325546679708OGLE
end 42.0590157098796-89.3110803788049OGLE
Spring Run
313
start 42.0402370001041-89.0065478421579OGLE
end 42.0507770466662-88.9858854279893OGLE
Steward Creek
297
start 41.8903673258897-89.1021064698423OGLE
end 41.8259979751563-88.9624738458404LEE
Stillman Creek
340
start 42.1259475370515-89.2319193482332OGLE
end 42.0372051268587-89.1542573242497OGLE
Sugar Creek
352
start 41.8392614813286-89.6956810578758WHITESIDE
end 41.8644109921615-89.5919014348703LEE
Sugar River
293
start 42.4357992567436-89.1971727593158WINNEBAGO
end 42.4982890047043-89.2624235677856WINNEBAGO
Sumner Creek
334
start 42.3227762010459-89.3830042631004WINNEBAGO
end 42.25195988987-89.3997975146614STEPHENSON
Turtle Creek
329
start 42.4929910323531-89.0439958173493WINNEBAGO
end 42.4961371053418-89.0246519221989WINNEBAGO
Unnamed Tributary
361
start 41.6608316904842-89.4728200038511LEE
end 41.6425311558513-89.4137140926471LEE
365
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 41.7443681625006-89.168951821186LEE
end 41.738182745458-89.1042187039322LEE
492
start 42.1246069284208-88.5882544654343DEKALB
end 42.1028295788327-88.5105326912596KANE
Unnamed Tributary of Buffalo Creek
357
start 41.9332348110612-89.6342816030603OGLE
end 41.93890647032-89.6092042883405OGLE
Unnamed Tributary of Coon Creek
282
start 42.1336677087989-88.6039205825106DEKALB
end 42.0754334787177-88.5442273447775KANE
491
start 42.150113155436-88.6091713292612DEKALB
end 42.1691790844289-88.5070973943593MCHENRY
Unnamed Tributary of Elkhorn Creek
355
start 41.9378871254405-89.7318712136894CARROLL
end 41.9525180771018-89.7332762139612CARROLL
Unnamed Tributary of Green River
360
start 41.8177589430141-89.1263088319088LEE
end 41.8012094828667-89.0296681468724LEE
362
start 41.66455888603-89.4729486542104LEE
end 41.650155479351-89.4398464027055LEE
364
start 41.750735979575-89.2189268880904LEE
end 41.7278383993539-89.1577958588247LEE
366
start 41.7304138832457-89.2547363744761LEE
end 41.7421804770435-89.2683034846455LEE
367
start 41.7336722733557-89.2459381167869LEE
end 41.6996843512729-89.2025409068097LEE
489
start 41.7765356433433-89.1781811586274LEE
end 41.791148742648-89.1782543204659LEE
Unnamed Tributary of Kyte River
298
start 41.969037423435-89.2727932207785OGLE
end 41.9423468128644-89.2676252361535OGLE
299
start 41.9474122868214-89.1742920304606OGLE
end 41.9511979792854-89.1378721025283OGLE
Unnamed Tributary of North Branch Kishwaukee River
319
start 42.4163330454161-88.5232715616737MCHENRY
end 42.4218523642031-88.5063783493938MCHENRY
Unnamed Tributary of Rock River
331
start 42.3730089457359-89.0581319432428WINNEBAGO
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
end 42.382841503485-89.0950184603254WINNEBAGO
Unnamed Tributary of South Branch Kishwaukee River
309
start 42.1219922946716-88.9236557341498DEKALB
end 42.1138208388943-88.9372243118963DEKALB
316
start 42.1565644453666-88.4449935784875MCHENRY
end 42.1594149792506-88.4178533576301MCHENRY
317
start 42.234010247227-88.5199093723576MCHENRY
end 42.2225793216803-88.5259266256801MCHENRY
Unnamed Tributary of Spring Run
314
start 42.0401565844742-88.9948863767949OGLE
end 42.0116835703089-88.9710672286801OGLE
Unnamed Tributary of Steward Creek
296
start 41.8444592840822-89.0070046248547LEE
end 41.8601589546913-88.9714244440014LEE
300
start 41.871719116543-89.069434926448LEE
end 41.8792477545579-89.037635229652LEE
Unnamed Tributary of Yellow Creek
369
start 42.3067615221991-89.8535571166391STEPHENSON
end 42.3493669268537-89.8275355259147STEPHENSON
West Fork Elkhorn Creek
351
start 42.0864514128748-89.636841111792OGLE
end 42.0924853439498-89.6474944357754OGLE
Willow Creek
363
start 41.7653209616214-89.1943294683724LEE
end 41.7141851660088-89.032161004274LEE
Yellow Creek
370
start 42.2899156684427-89.5696276563017STEPHENSON
end 42.3796215769162-89.9350879560031JO DAVIESS
Wabash
Bean Creek
437
start 40.2950579779894-87.7823902126108VERMILION
end 40.3344744135429-87.7494458762005VERMILION
Big Creek
457
start 39.3351439545995-87.5878012286214CLARK
start 39.436126036547-87.7023848396263CLARK
Bluegrass Creek
436
start 40.301292752824-87.7969361668719VERMILION
end 40.381268589802-87.8562389558508VERMILION
Brouilletts Creek
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
450
start 39.7057649552945-87.5509615193818EDGAR
end 39.797449971524-87.7178559181463EDGAR
Brush Creek
468
start 38.993072718826-88.1273817532169JASPER
end 38.9675510537677-88.1471375817992JASPER
Brushy Fork
484
start 39.7161188745587-88.0853294840712DOUGLAS
end 39.8111289403664-87.8839288887749EDGAR
Buck Creek
435
start 40.3115126234324-87.9255710854089VERMILION
end 40.2862675329103-87.9704593374522CHAMPAIGN
Cassell Creek
473
start 39.4866434423672-88.2094970436354COLES
end 39.4909698054293-88.207848854172COLES
Catfish Creek
477
start 39.680891264864-87.9341744320393EDGAR
end 39.6581354970801-87.8937116601235EDGAR
Clark Branch
483
start 39.8111289403664-87.8839288887749EDGAR
end 39.8226610039489-87.8513747624001EDGAR
Collison Branch
439
start 40.2351860050982-87.7725365689525VERMILION
end 40.2197161120333-87.803155121171VERMILION
Cottonwood Creek
469
start 39.2033657707304-88.2765033266093CUMBERLAND
end 39.3142137713574-88.229342077034CUMBERLAND
Crabapple Creek
452
start 39.7057649552945-87.5509615193818EDGAR
end 39.8065708276187-87.6467768455628EDGAR
Crooked Creek
465
start 38.9817031629594-88.066438923761JASPER
end 39.0356467346919-88.0923368283887JASPER
Deer Creek
485
start 39.7053403128076-88.0850387247647DOUGLAS
end 39.7025679945443-88.2058470030399DOUGLAS
Donica Creek
479
start 39.6453315324326-87.9892294370803COLES
end 39.6172623271272-87.9782640861296COLES
Dudley Branch
475
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 39.5115642227627-88.0564563693231COLES
end 39.5068188298145-88.043669581567COLES
East Crooked Creek
287
start 39.0356467346919-88.0923368283887JASPER
end 39.1659729856615-88.0610310241876JASPER
East Fork Big Creek
458
start 39.436126036547-87.7023848396263CLARK
end 39.5471103780713-87.760040304497EDGAR
Embarras River
460
start 38.9148628762488-87.9834798036322JASPER
end 39.7161188745587-88.0853294840712DOUGLAS
Feather Creek
432
start 40.1172818042134-87.8342855159987VERMILION
end 40.1416543211304-87.8399367268356VERMILION
Greasy Creek
480
start 39.6325904592965-88.0822649850404COLES
end 39.6182255297223-88.1320998047424COLES
Hickory Creek
464
start 38.9714278418083-87.972721454297JASPER
end 38.99191464315-87.989292523907JASPER
Hickory Grove Creek
478
start 39.6581354970801-87.8937116601235EDGAR
end 39.5712873627184-87.8825676201308EDGAR
Hurricane Creek
470
start 39.2889007816578-88.1544749600653CUMBERLAND
end 39.3793118297358-88.0668208708762COLES
Jordan Creek
433
start 40.0794151192358-87.7990673709556VERMILION
end 40.0588834821927-87.8360461636444VERMILION
443
start 40.3360527696651-87.6231745570584VERMILION
end 40.3553265493525-87.5278198412106VERMILION
Kickapoo Creek
471
start 39.4379695819539-88.1681483569976COLES
end 39.4597583113682-88.2917593820249COLES
Knights Branch
438
start 40.2763499940372-87.7961879249888VERMILION
end 40.2520446574291-87.8336356533235VERMILION
Little Embarras River
476
start 39.5736361588448-88.0726889440362COLES
end 39.680891264864-87.9341744320393EDGAR
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
Little Vermilion River
426
start 39.9463345271443-87.5536756201362VERMILION
end 39.9593741043792-87.6447473681732VERMILION
Middle Branch
442
start 40.3096675860339-87.6376716065503VERMILION
end 40.417753327133-87.5275419211693VERMILION
Middle Fork of Vermilion River
428
start 40.1035656386662-87.7169902321166VERMILION
end 40.4043343147541-88.0191381621282FORD
Mill Creek
487
start 39.2394256838229-87.6762126527038CLARK
end 39.3566749194214-87.7425049309309CLARK
Muddy Creek
242
start 39.1821395682335-88.2309155529877CUMBERLAND
end 39.2033657707304-88.2765033266093CUMBERLAND
North Fork of Embarras River
461
start 38.9148628762488-87.9834798036322JASPER
end 39.0924749553725-87.9784039128617JASPER
North Fork Vermilion River
441
start 40.236054881277-87.6293326109766VERMILION
end 40.5010729612407-87.5261721834388IROQUOIS
Panther Creek
462
start 39.0924749553725-87.9784039128617JASPER
end 39.184289386946-88.0087906828419CUMBERLAND
Polecat Creek
474
start 39.5013303165832-88.1055006912296COLES
end 39.5162859310237-88.0338496162262COLES
Riley Creek
472
start 39.4712869216685-88.2108945161318COLES
end 39.5116227820733-88.2569469311765COLES
Salt Fork
429
start 40.1035656386662-87.7169902321166VERMILION
end 40.0368232483006-88.0746580039075CHAMPAIGN
455
start 39.7425080214619-87.572919448772EDGAR
end 39.8018493662144-87.5775868051385EDGAR
Snake Creek
454
start 39.7128111863363-87.6415954465778EDGAR
end 39.7066978623237-87.6543043306751EDGAR
South Fork of Brouilletts Creek
453
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
start 39.7256495590209-87.6437626049444EDGAR
end 39.7319449005729-87.6951881181821EDGAR
Stony Creek
431
start 40.0943454186494-87.8170769835194VERMILION
end 40.1548847864725-87.8840063394108VERMILION
Sugar Creek
456
start 39.4838820536199-87.5320762217325EDGAR
end 39.6298164781408-87.6762882912482EDGAR
Unnamed Tributary of Big Creek
459
start 39.5047911835054-87.7121475341945EDGAR
end 39.5692784693864-87.7194139533441EDGAR
Unnamed Tributary of Brouilletts Creek
451
start 39.797449971524-87.7178559181463EDGAR
end 39.831592697221-87.7758036967074EDGAR
Unnamed Tributary of Brushy Fork
482
start 39.7340344129883-88.0771406153965DOUGLAS
end 39.802586616189-88.0753634663247DOUGLAS
Unnamed Tributary of Deer Creek
486
start 39.7102184848625-88.1385435180688DOUGLAS
end 39.678866903649-88.1425332064637DOUGLAS
Unnamed Tributary of Embarras River
467
start 38.9934159067144-88.129258689394JASPER
end 39.0034725453128-88.1210073578163JASPER
Unnamed Tributary of Greasy Creek
481
start 39.6182255297223-88.1320998047424COLES
end 39.621059195964-88.1538483534688COLES
Unnamed Tributary of Hickory Creek
210
start 38.99191464315-87.989292523907JASPER
end 39.0117394234421-87.9896104862878JASPER
Unnamed Tributary of Middle Fork of Vermilion River
434
start 40.3478602982847-87.9479087836067CHAMPAIGN
end 40.3408935605508-87.9885982351498CHAMPAIGN
Unnamed Tributary of Stony Creek
430
start 40.1548847864725-87.8840063394108VERMILION
end 40.1706704853124-87.9033972187304VERMILION
Unnamed Tributary of North Fork of the Vermilion River
444
start 40.3553498759616-87.6852979017427VERMILION
end 40.3665727663496-87.733231992072VERMILION
445
start 40.483638183168-87.5751075709757VERMILION
end 40.4930209841439-87.5771391859822IROQUOIS
BASIN NAME
Segment Name
Segment No.
End Points LatitudeLongitudeCOUNTY
446
start 40.423223711311-87.6788932053507VERMILION
end 40.4280461995299-87.6895565256772VERMILION
Vermilion River
427
start 40.0116868805566-87.5337540394346VERMILION
end 40.1035656386662-87.7169902321166VERMILION
Wabash River
488
end 39.3034266238732-87.605592332246CLARK
West Crooked Creek
466
start 39.0356467346919-88.0923368283887JASPER
end 39.0545759701349-88.1009871944535JASPER
West Fork Big Creek
19
start 39.436126036547-87.7023848396263CLARK
end 39.5012337820195-87.8003199656505EDGAR
Willow Creek
463
 
start 39.0191952007294-87.9402449982878CRAWFORD
end 39.0529145507759-87.9280073176635CRAWFORD

(Source: Added at 32 Ill. Reg. ____________, effective _______________)
 
IT IS SO ORDERED.
 
Section 41(a) of the Environmental Protection Act provides that final Board orders may be appealed directly to the Illinois Appellate Court within 35 days after the Board serves the order. 415 ILCS 5/41(a) (2006); see also 35 Ill. Adm. Code 101.300(d)(2), 101.906, 102.706. Illinois Supreme Court Rule 335 establishes filing requirements that apply when the Illinois Appellate Court, by statute, directly reviews administrative orders. 172 Ill. 2d R. 335. The Board’s procedural rules provide that motions for the Board to reconsider or modify its final orders may be filed with the Board within 35 days after the order is received. 35 Ill. Adm. Code 101.520; see also 35 Ill. Adm. Code 101.902, 102.700, 102.702.
 
I, John Therriault, Assistant Clerk of the Illinois Pollution Control Board, certify that the Board adopted the above opinion and order on January 24, 2008, by a vote of 4-0.
 

___________________________________
John Therriault, Assistant Clerk
Illinois Pollution Control Board
 
 

APPENDIX I TO THE OPINION AND ORDER
R04-25
HEARING EXHIBITS
 

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First Hearing: June 29, 2004, Chicago
             
Exhibit 1: “An Assessment of National and Illinois Dissolved Oxygen Water Quality Criteria” James E. Garvey and Matt R. Whiles (Apr. 2004)
Exhibit 2: “Ambient Water Quality Criteria for Dissolved Oxygen” USEPA (Apr. 1986)
Exhibit 3: Resume of Dennis Streicher
Exhibit 4: Copies of letters from Dennis Streicher to various organizations concerning the proposed rulemaking
Exhibit 5: Resume of James E. Garvey
Exhibit 6: Resume of Matt R. Whiles
Exhibit 7: From R02-19, written testimony of Robert J. Sheehan & Table 1 “Spawning periods for fishes in Illinois”
Exhibit 8: “Influences of Hypoxia and Hyperthermia on Fish Species Composition in Headwater Streams” Martin A. Smale and Chalres F. Rabeni (1995)
Second Hearing: August 12, 2004, Springfield
Exhibit 9: Pre-filed Testimony of Dr. James E. Garvey, with attached July 2004 report entitled “Long Term Dynamics of Oxygen and Temperature in Illinois Streams” by Dr. Garvey.
Exhibit 10: Electronic comments by Dr. Gary Chapman in the margins of “An Assessment of National and Illinois Dissolved Oxygen Water Quality Criteria” James E. Garvey and Matt R. Whiles (Apr. 2004)
 
Exhibit 11: One-page hard copy of e-mail sent July 22, 2004 at 8:52 a.m. from Roy M. Harsch regarding IEPA “implementation rules”
Exhibit 12: Letter entitled “Fight Effort to Lower Fox Oxygen Criteria,” from David J. Horn, appearing on the Opinion page of the Daily Herald   
Exhibit 13: Letter dated July 30, 2004 from David L. Thomas, Ph.D, Chief of the Illinois Natural History Survey to Lieutenant Governor Pat Quinn

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Third Hearing: August 25, 2005
Exhibit 14: Statement of Toby Frevert, Manager of the Division of Water Pollution Control, IEPA
Exhibit 15: Pre-filed Testimony of Dennis Streicher, Director of Water and Wastewater with the City of Elmhurst, and President of IAWA
Exhibit 16: Pre-filed Testimony of Dr. James E. Garvey, with nine attachments
Exhibit 17: One-page list of streams entitled “Table 2 – Testimony of David L. Thomas, August 2005”
Exhibit 18: Pre-filed Testimony of Todd Main, Director of Policy and Planning, Friends of the Chicago River
Exhibit 19: Pre-filed Testimony of Thomas J. Murphy, Emeritus Professor of Chemistry, Environmental Science Program, DePaul University

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Fourth Hearing: April 25, 2006
Exhibit 20: IEPA/DNR Proposed Rule Language (Attached to 4/4/06 Pre-filed Testimony of IEPA/DNR)
Exhibit 21: IEPA/DNR Proposed Section 302.Appendix D: Stream Segments for Enhanced Dissolved Oxygen Protection (Attached to 4/4/06 Pre-filed Testimony of IEPA/DNR)
Exhibit 22: IEPA’s April 24, 2006 Response to Dennis Streicher of IAWA (includes compact disc of Dissolved Oxygen Results at IEPA Stream Sites (Selected Sites), Grab Samples (1994-2003), Continuous Monitoring Data (2004-2005))
Exhibit 23: IEPA/DNR Technical Support Document (Mar. 31, 2006) (Attached to 4/4/06 Pre-filed Testimony of IEPA/DNR)
Exhibit 24: Compact disc of IEPA/DNR Proposed Streams for Enhanced Dissolved Oxygen Protection (Attached to 4/4/06 Pre-filed Testimony of IEPA/DNR)
Exhibit 25: Amended Pre-filed Testimony of Richard Lanyon on behalf of the Metropolitan Water Reclamation District of Greater Chicago (MWRDGC)
Exhibit 26: USEPA Method # 360.1, Approved for NPDES (Issued 1971), Oxygen, Dissolved (Membrane Electrode)
Exhibit 27: Testimony of Thomas J. Murphy, Emeritus Professor of Chemistry, Environmental Science Program, DePaul University
Status Conference Call: June 5, 2006

Exhibit 28: Compact disc with May 19, 2006 cover letter from DNR (five copies of disc) (disc includes the information from Exhibit 24, as well as the following information: stream segments that IEPA identified in the 2006 Assessment Database as being aquatic life use impaired (including segments where low dissolved oxygen is identified as a potential cause of impairment); and National Pollutant Discharge Elimination System (NPDES) discharge points and associated metadata)
 

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Fifth Hearing: November 2-3, 2006
 

Exhibit 29: Pre-filed Questions of Environmental Law & Policy Center of the Midwest (ELPC), Prairie Rivers Network (PRN), and Sierra Club Directed to IEPA/DNR
 
Exhibit 30: IEPA/DNR Responses to Pre-filed Questions of ELPC, PRN, & Sierra Club
 
Exhibit 31: Pre-filed Testimony of Thomas J. Murphy, Emeritus Professor of Chemistry, Environmental Science Program, DePaul University
 
Exhibit 32: Pre-filed Testimony of Dennis Streicher
 
Exhibit 33: Certifications of Dissolved Oxygen Sample Collection by the Fox Metro Water Reclamation District, the City of Naperville, the Greater Peoria Sanitary District, the Village of Plainfield, the Rock River Water Reclamation District, and the Wheaton Sanitary District
 
Exhibit 34: Compact disc of IAWA Dissolved Oxygen Sampling Data
 
Exhibit 35: Pre-filed Testimony of Dr. James E. Garvey
 
Exhibit 36: Additional Testimony of Dr. James E. Garvey
 
Exhibit 37: Abstract of presentation made to the North American Benthological Society entitled “Effects of hypoxia on brood survival in the freshwater mussel, Venustaconcha ellipsiformis,” B.E. Kaiser, M.C. Barnhart
 
Exhibit 38: “Anthropogenic Inputs of Nitrogen and Phosphorus and Riverine Export for Illinois, USA,” Mark B. David, Lowell E. Gentry, reprinted from the Journal of Environmental Quality
 
Exhibit 39: “Biological Criteria and Tiered Aquatic Life Uses: Potential Changes to Illinois Water Quality Standards,” IEPA Bureau of Water (Sept. 2006)  
 
Exhibit 40: Pre-filed Testimony of Richard Lanyon, MWRDGC
 
Exhibit 41: Pre-filed Testimony of Louis Kollias, MWRDGC

APPENDIX II TO THE OPINION AND ORDER
R04-25
PUBLIC COMMENTS
 

PC 1 Robert W. Schanzle, President, Illinois Chapter of the American Fisheries Society
PC 2 Nancy Erickson, Director, Natural and Environmental Resources of Illinois Farm Bureau
PC 2.5 Metropolitan Water Reclamation District
PC 3 Thomas E. Tarasiuk
PC 4 Theresa A. Kolady
PC 5 Elaine R. Parnell
PC 6 Donald E. Lupei
PC 7 Justin Czapczyk
PC 8 Gary A. Jannusch
PC 9 Margaret E. Fox
PC 10 Richard A. Hilton
PC 11 Lois Johnson
PC 12 R. Gilkerson
PC 13 Ward P. Schwartz
PC 14 Patrick A. Kimse
PC 15 Jennifer Oviedo
PC 16 Angie Ali
PC 17 The Martlings
PC 18 George W. Carpenter
PC 19 Michele K. Mellor
PC 20 Brandon Zaleiski
PC 21 Edgar Oviedo
PC 22 Paul B. Smith
PC 23 Michael Kirschman
PC 24 The Thrashers
PC 25 The Workman's
PC 26 Alison Richards
PC 27 David J. Horn
PC 28 John E. Mozzocco
PC 29 Jody Strohm
PC 30 Pamela Pesertell
PC 31 The Fishers
PC 32 William H. Holleman
PC 33 Susan Stillinger
PC 34 Linda Gray
PC 35 M. Mey
PC 36 Kris A. Hall
PC 37 A. K. Helland
PC 38 Clifford L. White, Jr.
PC 39 W. H. Brisker
PC 40 Mark Donnelly
PC 41 Lenore G. Lee
PC 42 John D. McKee
PC 43 Donna Erfort
PC 44 Jyoti Srikishan
PC 45 Patricia Gebhardt
PC 46 Lara Miller
PC 47 Amanda B. Reyes
PC 48 Pat Dieckhoff
PC 49 Mary J. Zaander
PC 50 David H. Arnett
PC 51 Ann Schneck
PC 52 Dawn Rosch
PC 53 Caroline M. Quinlan
PC 54 Rick Maring
PC 55 Kyla Jacobsen
PC 56 The Shroders
PC 57 Ken Schaefer
PC 58 Brad Hoar
PC 59 The Masonicks
PC 60 Dennis Paige
PC 61 Kelley Ann Kepes
PC 62 Danielle Ebersole
PC 63 Christoph Parat
PC 64 Michael Ander
PC 65 Jean Leverenz
PC 66 Judith Boettmer
PC 67 John A. Olson
PC 68 David L. Segel
PC 69 Henry J. Wolf
PC 70 Ann Anderson
PC 71 James O. Breen
PC 72 Robert C. Arnet
PC 73 The Szymanskyj's
PC 74 Nikki Dahlin
PC 75 Gloria Klimek
PC 76 John Webb
PC 77 Mary Robbins
PC 78 Day Waterman
PC 79 Philip W. Cunio
PC 80 Lana M. Haley
PC 81 Jean Flemma, Executive Director, Prairie Rivers Network
PC 82 Dennis Streicher for Illinois Association of Wastewater Agencies
PC 83 Thomas J. Murphy, Ph.D.
PC 84 Todd Main, Policy Director, Friends of the Chicago River
PC 85 Stanton A. Browning, Executive Director, Greater Peoria Sanitary District
PC 86 Gregory J. Brunst, Director, Village of Addison
PC 87 Clifford L. White, Jr., Environmental Services Superintendent, City of St. Charles
PC 88 Downers Grove Sanitary District
PC 89 Thomas F. Muth, Manager, Fox Metro Water Reclamation District
PC 90 George R. Schillinger, Executive Director, American Bottoms Regional Wastewater Treatment Facility
PC 91 Michael R. Little, Executive Director, Urbana & Champaign Sanitary District
PC 92 Jane M. Carlson, P.E. and Troy W. Stinson, P.E. of Strand Associates, Inc.
PC 93 Steve Olsen, Plant Foreman of Dekalb Sanitary District
PC 94 Dr. James E. Garvey
PC 95 Chemical Industry Council of Illinois
PC 96 Illinois Department of Natural Resources
PC 97 James L. Daugherty, District Manager, Thorn Creek Basin Sanitary District
PC 98 Metropolitan Water Reclamation District of Greater Chicago
PC 99 Mayor Arthur J. Washkowiak of City of LaSalle
PC 100 Illinois Chapter of the American Fisheries Society
PC 101 Environmental Law & Policy Center, Prairie Rivers Network, and Sierra Club
PC 102 Illinois Association of Wastewater Agencies
PC 103 Illinois Environmental Protection Agency
PC 104 Darrel R. Gavle, P.E. and Pavel Hajda, Ph.D of Baxter & Woodman, Inc. Consulting Engineers
PC 105 Thomas J. Murphy, Ph.D.
PC 106 James E. Huff, P.E., Vice President, Huff & Huff, Inc.
PC 107 Dennis Streicher of Illinois Association of Wastewater Agencies
PC 108 Robert Fischer, Ph.D, President, ILAFS, Professor of Biology, Associate Chair, Biology, Eastern Illinois University
PC 109 Dennis Streicher of IAWA and Professor Jim Garvey of IAWA
PC 110 Illinois Environmental Protection Agency’s Response to Dennis Streicher's Public Comment of April 24, 2007
PC 111 Metropolitan Water Reclamation District of Greater Chicago
PC 112 Dr. Thomas Murphy, Professor Emeritus of Chemistry, DePaul University
PC 113 Illinois Association of Wastewater Agencies
PC 114 Illinois Environmental Protection Agency
 
 
 
 

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