Ohio Integrated Water Quality Monitoring and Assessment Report
Ohio Integrated Water Quality Monitoring and Assessment Report
The Integrated Water Quality Monitoring and Assessment Report (also called the Integrated Report) indicates the general condition of Ohio's waters and identifies waters that are not meeting water quality goals. The report satisfies the Clean Water Act requirements for both Section 305(b) for biennial reports on the condition of the State's waters and Section 303(d) for a prioritized list of impaired waters. For each impaired water, Ohio EPA typically prepares a total maximum daily load (TMDL) analysis.
How's My Waterway
The How's My Waterway App is now available. U.S. EPA's new tool provides water quality information at the community, state and national level. Ohio's water quality information from our final 2020 Integrated Water Quality Monitoring and Assessment Report is included along with permitted discharger, drinking water and nonpoint source program grant project information on a watershed basis. Please take a moment to explore the new How's My Waterway App.
2022
Final 2022 Integrated Report
The 2022 Integrated Report fulfills the State's reporting obligations under Section 305(b) (33 U.S.C. 1315) and Section 303(d) (33 U.S.C. 1313) of the Federal Clean Water Act. The report indicates the general condition of Ohio’s waters and lists those waters that are currently impaired and may require Total Maximum Daily Load (TMDL) development in order to meet water quality standards. Ohio EPA presented information about the Integrated Report through a webinar on February 15, 2022. The webinar is available for viewing online (here is the link: Feb. 15, 2022 Webinar Recording).
See the Guide to Total Maximum Daily Loads fact sheet for more information about the TMDL process.
- Cover and front material
- Section A: An Overview of Water Quality in Ohio
- Section B: Ohio’s Water Resources
- Section C: Managing Water Quality
- Section D: Framework for Reporting and Evaluation
- Section E: Evaluating Beneficial Use: Human Health (Fish Consumption)
- Section F: Evaluating Beneficial Use: Recreation
- Section G: Evaluating Beneficial Use: Aquatic Life
- Section H: Evaluating Beneficial Use: Public Drinking Water Supply
- Section I: Considerations for Future Lists
- Section J: Addressing Waters Not Meeting Water Quality Goals
- Section K: Category 4B Demonstrations
- Section L: An Overview of Ground Water Quality in Ohio
- Section M: References
Final 2022 Spreadsheet of Ohio EPA's Data in ATTAINS - coming soon
Interactive Map of 2022 Integrated Report Information - coming soon
For more information, contact:
Kate Hamilton
TMDL Coordinator
2020
Final 2020 Integrated Report
The 2020 Integrated Report fulfills the State's reporting obligations under Section 305(b) (33 U.S.C. 1315) and Section 303(d) (33 U.S.C. 1313) of the Federal Clean Water Act. The report indicates the general condition of Ohio’s waters and lists those waters that are currently impaired and may require Total Maximum Daily Load (TMDL) development in order to meet water quality standards. Ohio EPA presented information about the Integrated Report through a webinar on March 2, 2020. The webinar is available for viewing online or you may view the presentation slides.
See the Guide to Total Maximum Daily Loads fact sheet for more information about the TMDL process.
Major Changes since the 2018 Integrated Report
Changes made between the 2018 Integrated Report and the 2020 Integrated Report are as follows:
- This is the first report prepared and submitted using U.S. EPA’s new database system called ATTAINS. Once final, Ohio EPA’s data will now be available to the public through U.S. EPA’s application called “How’s My Waterway.”
- Ohio EPA is assigning a high priority to Lake Erie’s western shoreline, western open water, and islands shoreline assessment units for impairments of public drinking water supply (algae) and recreation (algae), and committing to develop a TMDL over the next two to three years.
- New assessment methodologies and results are included for recreation (algae) for Lake Erie’s Sandusky Bay shoreline and open water and central basin shoreline and open water units.
- Ohio EPA removed or delisted a total of 146 parameters (or causes of impairment) out of a total of 343 delistings because water quality standards are now in attainment based upon new sampling data or restoration activities.
- Ohio EPA was able to close out two plans (Category 4Bs) to address water quality impairments from the Georgetown and Pickerington wastewater treatment plants because implemented controls have resulted in improved water quality for the parameters of concern in Town Run and Sycamore Creek, respectively.
Report
The report is available in its entirety here. For the best quality images, use the individual sections available below in Adobe Acrobat format. Results summaries for individual assessment units are available via the interactive map online.
- Cover and front material
- Section A: An Overview of Water Quality in Ohio
- Section B: Ohio’s Water Resources
- Section C: Managing Water Quality
- Section D: Framework for Reporting and Evaluation
- Section E: Evaluating Beneficial Use: Human Health (Fish Consumption)
- Section F: Evaluating Beneficial Use: Recreation
- Section G: Evaluating Beneficial Use: Aquatic Life
- Section H: Evaluating Beneficial Use: Public Drinking Water Supply
- Section I: Considerations for Future Lists
- Section J: Addressing Waters Not Meeting Water Quality Goals
- Section K: Category 4B Demonstrations
- Section L: An Overview of Ground Water Quality in Ohio
- Section M: References
2018
U.S. EPA approved the 2018 Integrated Water Quality Monitoring and Assessment Report on July 9, 2018. The approved report is available below.
The Integrated Report meets both Clean Water Act 305(b) and 303(d) requirements, using a watershed assessment unit based on the 12-digit hydrologic unit. Changes made between the 2016 Integrated Report and the 2018 Integrated Report include:
- The report contains revised assessment units for the entire Ohio portion of Lake Erie in Section D1.
- The report also discusses future methodology development for recreation assessment of Lake Erie based on algal blooms in Section I.
- The methodology for evaluating the recreation use based on bacteria has been updated to include the revised E. coli water quality criteria, effective Jan. 2016, in Section F1.
Ohio EPA presented information about the list through a webinar on April 25, 2018. The webinar is available for viewing online or you may view the presentation slides.
Interactive Map of Assessment Unit Summaries
Summary of 2018 Report
Human Health Use (Fish Tissue)
Fish tissue data was available for approximately half of Ohio’s watershed assessment units and two-thirds of publicly-owned lakes. About one-third of monitored watershed assessment units and one-half of the monitored lakes were assessed as being unimpaired for this use. Polychlorinated biphenyl (PCB) contamination, primarily a result of historic industrial sources and old landfill discharges, continues to be the cause of most of the human health use impairments. Mercury is the second leading cause of human health use impairments after PCBs.
More information about the human health (fish tissue) use assessment results can be found in Section E of the report.
Recreation Use
For Lake Erie public beaches, the frequency of swimming advisories varies widely, ranging from near zero at Battery Park, East Harbor State Park, Lakeside and South Bass Island State Park to nearly 40 percent or more at Bay View West, Edson Creek, Euclid State Park, Lakeshore Park, Lakeview, Maumee Bay State Park (Erie), Sherod, Sims, Veteran’s, Villa Angela State Park and White’s Landing beaches.
For inland streams, of the 170 assessment units having sufficient data available to determine the recreation use assessment status in 2018, eight percent fully supported the use while 92 percent did not support the use. All six of the large river units evaluated in this cycle failed to support the recreation use. However, the Huron River mainstem, although not a large river assessment unit, was documented to fully support the recreation use.
As for inland lakes, the frequency of exceedances during the five-year reporting period was 13.8 percent, slightly higher than the 12.4 percent rate reported in the 2016 report. There were 28 inland lake beaches where the aggregated exceedance frequency was more than 10 percent with the highest being 66 percent at the Brooks Park beach at Buckeye Lake and followed closely by Buckeye Lake’s Crystal Beach at 60 percent.
The western basin of Lake Erie has also been assessed for recreation use impacted by significant algae biomass present during the recreation season. As a result, Ohio is listing the shorelines and open water in the western basin as impaired for recreation use.
More information about the recreation use assessment results can be found in Section F of the report.
Aquatic Life Use
The bulk of the new data evaluated for the aquatic life use is in areas Ohio EPA sampled during 2015 and 2016. Watersheds intensively monitored during 2015 and 2016 included the St. Mary’s River basin, selected Lake Erie Central Basin tributaries, selected direct tributaries to the Maumee River, selected Southeast Ohio River tributaries, selected Southwest Ohio River tributaries, the Conotton Creek basin, the Raccoon Creek basin and the Symmes Creek basin. The only large rivers comprehensively reassessed were the Whitewater River, Cuyahoga River and Raccoon Creek but updates for specific segments of the Auglaize River, Maumee River, Great Miami River, Little Miami River, Muskingum River, Tuscarawas River, Walhonding River and Scioto River were also completed with a lesser number of sites. Detailed watershed survey reports for many of the basins mentioned above are or will be available from Ohio EPA’s Division of Surface Water (see Biological and Water Quality Report Index).
Ohio’s large rivers (the 23 rivers that drain more than 500 square miles) remained essentially unchanged in percent of monitored miles in full attainment compared to the same statistic reported in the 2016 integrated report.
Based on monitoring through 2016, the full attainment statistic now stands at 87.5 percent (1,089 of 1,243 assessed large river assessment unit miles), up 0.1 percent from the 2016 integrated report. Significant large rivers assessed for the 2018 integrated report included the Whitewater River (2013 external data), Cuyahoga River (2016 external data) and Raccoon Creek (2016). Attainment statistics for these three rivers (three large river assessment units) are as follows.
- Whitewater River: 100 percent full EWH attainment over 8.3 miles
- Cuyahoga River: 61.3 percent full WWH attainment over 24.2 miles
- Raccoon Creek: 100 percent full WWH attainment over 37.6 miles
More information about the aquatic life use assessment results can be found in Section G of the report.
Public Drinking Water Supply Use
Human health impacts related to drinking water focus on nitrate, pesticides and cyanotoxins (due to certain algae). In Ohio, 110 public water systems use surface water (excluding Ohio River intakes) in 119 separate assessment units.
Sufficient data were available to complete nitrate evaluations for half of the assessment units of which 6 percent were identified as impaired and 45 percent were in full support. Of the large rivers, three Maumee River and one Sandusky River assessment unit remain impaired and there is a new impairment on one Scioto River assessment unit. Most of the 31 waters placed on the nitrate watch list are in northwestern Ohio.
Pesticides were evaluated for 35 assessment units. Five of the assessment units were impaired while the remaining were in full support. There were no new assessment units identified as impaired due to pesticides. A total of 21 assessment units were placed on the pesticide watch list because of elevated atrazine. These areas of elevated atrazine coincide with the predominantly agricultural land use in western and northwestern Ohio.
The monitoring of microcystins and cyanobacteria by Ohio public water systems greatly increased the data available to assess the algae indicator. Sufficient data were available to list 31 percent of the assessment units as impaired due to algae, including 17 new assessment units identified as impaired this reporting cycle. The impairment listing includes all assessment units in Lake Erie with drinking water intakes. In addition, 28 watershed assessment units and three large river assessment units are now assessed as impaired. An additional 17 assessment units were also placed on the algae watch list. Watershed assessment units that are impaired or on the watch list for cyanotoxins were found distributed across Ohio virtually in every geographic region.
More information about the public drinking water supply use assessment results can be found in Section H of the report.
Aquatic Life Use Attainment – 2018
Report
The report is available in its entirety here. Due to file compression, the image quality may be poor. For the best quality images, use the individual sections available below in Adobe Acrobat format. Results summaries for individual assessment units are available via the interactive map online.
- Cover and front material
- Section A: An Overview of Water Quality in Ohio
- Section B: Ohio’s Water Resources
- B1: Facts and Figures
- B2: 2020 Water Quality Goals
- Section C: Managing Water Quality
- C1: Program Summary – Surface Water
- C2: Program Summary – Environmental and Financial Assistance
- C3: Program Summary – Drinking and Ground Waters - includes HAB program
- C4: Program Summary – Environmental Services
- C5: Cooperation among State Agencies and Departments
- C6: Funding Sources for Pollution Controls
- C7: New 303(d) Vision Implementation in Ohio
- Section D: Framework for Reporting and Evaluation
- D1: Assessment Units
- D2: Evaluation of the Ohio River
- D3: Evaluation of Lake Erie
- D4: Ohio’s Water Quality Standards Use Designations
- D5: Sources of Existing and Readily Available Data
- D6: Public Involvement in Compiling Ohio’s Section 303(d) List of Impaired Waters
- Section E: Evaluating Beneficial Use: Human Health (Fish Contaminants)
- E1: Background
- E2: Rationale and Evaluation Method
- E3: Results
- E4: Supplemental Information
- Section F: Evaluating Beneficial Use: Recreation
- F1: Background (Bacteria)
- F2: Evaluation Method (Bacteria)
- F3: Results (Bacteria)
- F4: Recreation Assessment for Algae in Western Lake Erie
- Section G: Evaluating Beneficial Use: Aquatic Life
- G1: Background and Rationale
- G2: Evaluation Method
- G3: Results
- Section H: Evaluating Beneficial Use: Public Drinking Water Supply
- H1: Background
- H2: Evaluation Method
- H3: Results
- H4: Supplemental Information
- Section I: Considerations for Future Lists
- I1: Wetlands
- I2: Mercury Reduction at Ohio EPA
- I3: Inland Lakes and Reservoirs
- I4: Future Lake Erie Monitoring and Assessment
- Section J: Addressing Waters Not Meeting Water Quality Goals
- J1: Ohio’s 303(d) Listing Framework
- J2: Prioritizing the Impaired Waters: the 303(d) List
- J3: Addressing Nutrients in Lake Erie
- J4: Summary of Results
- J5: Changes to the 2018 303(d) List
- J6: Schedule for TMDL Work
- Section K: Maps - Download individual maps below.
- Ohio 8-Digit Hydrologic Units
- Section 303(d) Human Health (Fish Tissue) Use Categories Watershed Assessment Units
- Section 303(d) Human Health (Fish Tissue) Use Categories Large River Assessment Units
- Section 303(d) Human Health (Fish Tissue) Use Categories Lake Erie Assessment Units
- Section 303(d) Recreation Use Categories Watershed Assessment Units
- Recreation Use Index Scores Watershed Assessment Units
- Section 303(d) Recreation Use Categories Large River Assessment Units
- Recreation Use Index Scores Large River Assessment Units
- Section 303(d) Recreation Use Categories Lake Erie Assessment Units
- Section 303(d) Aquatic Life Use Categories Watershed Assessment Units
- Aquatic Life Use Index Scores Watershed Assessment Units
- Section 303(d) Aquatic Life Use Categories Large River Assessment Units
- Aquatic Life Use Index Scores Large River Assessment Units
- Section 303(d) Aquatic Life Use Categories Lake Erie Assessment Units
- Aquatic Life Use Index Scores Lake Erie Assessment Units
- Section 303(d) Public Drinking Water Supply Use Categories Watershed Assessment Units
- Section 303(d) Public Drinking Water Supply Use Categories Large River Assessment Units
- Section 303(d) Public Drinking Water Supply Use Categories Lake Erie Assessment Units
- Ohio Total Maximum Daily Load Program Progress
- Section L: Summary Tables of Waterbody Conditions, List of Prioritized Impaired Waters, and Category 4B Demonstrations - Section L4 is also available individually below.
- L1: Status of Watershed Assessment Units
- L2: Status of Large River Assessment Units
- L3: Status of Lake Erie Assessment Units
- L4: Section 303(d) List of Prioritized Impaired Waters
- L5: Category 4B Demonstrations Contained in Approved Ohio TMDLs to Date
- Section M: An Overview of Ground Water Quality in Ohio
- M1: Introduction
- M2: Ohio’s Ground Water Programs
- M3: Ohio’s Major Aquifers
- M4: Site-Specific Ground Water Contamination Summary
- M5: Major Sources of Ground Water Contamination
- M6: Summary of Ground Water Quality by Aquifer
- M7: Conclusions and Future Directions for Ground Water Protection
- Section N: References
- Assessment Unit Summaries (online only)
2016
U.S. EPA approved the 2016 Integrated Report on May 19, 2017. The approved report is available below.
In July 2017, the United States District Court for the Northern District of Ohio was petitioned for judicial review of U.S. EPA’s approval of Ohio’s 2016 list of impaired waters because the open waters of Lake Erie were not listed as impaired despite numerous toxic algae blooms. U.S. EPA withdrew the approval of Ohio’s list on January 12, 2018 and requested additional information. While the judicial review was still pending, Ohio released the draft 2018 list of impaired waters that included an impairment listing for the western basin of Lake Erie (open waters) for recreation based on algae. Since the assessment method developed indicated that the open waters of the western basin were also impaired by algae for recreation use in 2016, Ohio EPA submitted a revised 2016 listing of impaired waters along with changes that would be necessary to the integrated report.
The 2016 IR amendment submittal can be found here. U.S.EPA approved the amendment on May 10, 2018 and the approval letter can be found here.
The Integrated Report meets both Clean Water Act 305(b) and 303(d) requirements, using a watershed assessment unit based on the 12-digit hydrologic unit.
Changes made between the 2014 Integrated Report and the 2016 Integrated Report are minor.
- Analysis and listing changes are based on data collected during 2013 and 2014 for all uses; recreation and public drinking water supplies uses also included data from 2015, therefore impairment listings may not reflect current conditions.
- The Harmful Algal Bloom (HAB) information has been moved from Section I to Section C (Section C7).
- The report contains a new subsection dedicated to Ohio’s 303(d)/TMDL Program Vision (Section C8).
- Information was added to the end of Section H regarding an error that was discovered in the 2014 list pertaining to improperly listed PDWS use waters.
- A description of “Near Term Priorities for Ohio EPA” was added to Section J2.
- The report contains a new subsection discussing Ohio’s approach to addressing nutrients in Lake Erie (See Section J3), and Lake Erie information has been added or moved to Sections C and D (see Section C1 and Section D3).
- Section L5 – Monitoring and TMDL Schedules for Ohio’s Watershed and Large River Assessment Units – was removed from the report; consequently, previous section “L6” was re-numbered/labeled.
Ohio EPA presented information about the list through a webinar on Aug.16, 2016, at 2 p.m. The webinar is available for viewing online or you may view the presentation slides.
Interactive Map of Assessment Unit Summaries
For more information, contact:
Melinda Harris
Supervisor, TMDL & Integrated Report
(614) 728-1357
Summary of 2016 Report
Human Health Use (Fish Tissue)
Fish tissue data was available for approximately half of Ohio’s watershed assessment units and one-third of publicly-owned lakes. About one-third of monitored watershed assessment units and two-fifths of monitored lakes were unimpaired for this use. PCB contamination, primarily a result of historic industrial sources and old landfill discharges, is the cause of most of the human health use impairments. Mercury is the second leading cause of human health use impairments after PCBs.
Recreation Use
For Lake Erie public beaches, the frequency of swimming advisories varies widely, ranging from near zero at South Bass Island State Park and Battery Park beaches to over 40 percent at Arcadia, Bay View West, Edson Creek, Euclid State Park, Lakeshore Park, Lakeview, Sherod and Villa Angela State Park beaches. Generally, beaches located near population centers tend to have the most problems.
For inland streams, approximately half of the total assessment units had sufficient data to determine the recreation use assessment status in 2016. Of the watersheds assessed, 10 percent fully supported the use while 90 percent did not. Increased bacteria levels are often observed during periods of higher stream flows associated with heavy rains. Although not sampled as frequently as streams or Lake Erie beaches, bacteria levels at most inland lake beaches do not frequently exceed the threshold, resulting in fewer postings compared to some of the beaches along Lake Erie.
Aquatic Life Use
Ohio’s large rivers (the 23 rivers that drain more than 500 square miles) reflected a small decline in percent of monitored miles in full attainment compared to the same statistic reported in the 2014 Integrated Report. This is due to the inclusion of new data from two rivers considered historical status (i.e., previous data not used) in past reports. Both had been greatly impaired in the past, but are now showing vastly increased miles meeting goals. However, the percent of miles remaining impaired slightly lowered the overall large river full attainment statistic.
Based on monitoring through 2014, Ohio’s large river assessment unit full attainment statistic now stands at 87.4 percent (down 1.8 percent from the 89.2 percent that was shown in the 2014 report). The table below shows the status of the four large rivers recently sampled, particularly the improvement in the Maumee and Tiffin Rivers since the mid to late 1990s.
Public Drinking Water Supply Use
There are a total of 119 public water systems using surface water (excluding Ohio River intakes). Sufficient data were available to evaluate 43 percent of the drinking water source waters for nitrate.
The only nitrate impaired areas were the Maumee River (the systems for the communities of Defiance, Napoleon, McClure, Wauseon, Bowling Green and the Campbell Soup system) and a portion of the Sandusky River (Fremont). Some areas were identified for a watch list; most were located in the northwestern and central parts of the state. It is difficult and expensive to remove nitrate from drinking water; some systems are conducting nitrate removal pilot studies, but no Ohio surface water systems currently use treatment specific for nitrate removal. Ohio public water systems rely on blending the surface water with other sources such as ground water, selective pumping from the stream to avoid high nitrate levels by using off-stream storage in upground reservoirs or issue public notice advisories warning sensitive populations to avoid drinking the water while nitrate levels are high.
Pesticides could be evaluated for about 21 percent of the drinking water source waters. Five of 19 WAUs were identified as impaired, all in southwestern Ohio: one in Brown County (Mt. Orab); one in Miami County (Piqua); and the three sources used by the Village of Blanchester in Warren and Clinton counties. Eighteen areas were identified for a watch list because of elevated atrazine.
Since the end of the last report cycle, incidents of harmful algal blooms (HABs) impacting Ohio public drinking water supplies have greatly increased. Sufficient data were available to list 19 AUs (15 percent) as impaired. The impairment listing includes the entire Lake Erie Western Basin shoreline, Lake Erie Central Basin shoreline and Lake Erie Island shoreline AUs. In addition, 15 WAUs are now assessed as impaired. These include water supply sources in Lima (Allen County); Bowling Green (Wood County); Clyde (Sandusky County); Norwalk (Huron County), Akron and Barberton (Summit County); Woodsfield (Monroe County); Cadiz (Harrison County); Celina (Mercer County); the Wyanoka Regional Water District (Sardinia – Brown and Harrison Counties); and Clermont County. One large river AU was identified as impaired for algae: Maumee River Mainstem in Bowling Green (Wood County). Sixteen WAUs and three LRAUs are on the algae watchlist.
Report
Amendment to the 2016 Integrated Report
The report is available in its entirety here. Due to file compression, the image quality may be poor. For the best quality images, use the individual sections available below in Adobe Acrobat format. Results summaries for individual assessment units are available via the interactive map online.
- Cover and front material
- Section A: An Overview of Water Quality in Ohio
- Section B: Ohio’s Water Resources
- B1: Facts and Figures
- B2: 2020 Water Quality Goals
- Section C: Managing Water Quality
- C1: Program Summary – Surface Water
- C2: Program Summary – Environmental and Financial Assistance
- C3: Program Summary – Drinking and Ground Waters
- C4: Program Summary – Environmental Services
- C5: Cooperation among State Agencies and Departments
- C6: Funding Sources for Pollution Controls
- C7: Harmful Algal Blooms Responses and Assessments
- C8: New 303(d) Vision Implementation in Ohio
- Section D: Framework for Reporting and Evaluation
- D1: Assessment Units
- D2: Evaluation of the Ohio River
- D3: Evaluation of Lake Erie
- D4: Ohio’s Water Quality Standards Use Designations
- D5: Sources of Existing and Readily Available Data
- D6: Public Involvement in Compiling Ohio’s Section 303(d) List of Impaired Waters
- D7: Public Comments and Responses to Comments on the Draft Report
- Section E: Evaluating Beneficial Use: Human Health (Fish Contaminants)
- E1: Background
- E2: Rationale and Evaluation Method
- E3: Results
- E4: Supplemental Information
- Section F: Evaluating Beneficial Use: Recreation
- F1: Background
- F2: Evaluation Method
- F3: Results
- Section G: Evaluating Beneficial Use: Aquatic Life
- G1: Background and Rationale
- G2: Evaluation Method
- G3: Results
- Section H: Evaluating Beneficial Use: Public Drinking Water Supply
- H1: Background
- H2: Evaluation Method
- H3: Results
- H4: Supplemental Information
- Section I: Considerations for Future Lists
- I1: Wetlands
- I2: Mercury Reduction at Ohio EPA
- I3: Inland Lakes and Reservoirs
- Section J: Addressing Waters Not Meeting Water Quality Goals
- J1: Ohio’s 303(d) Listing Framework
- J2: Prioritizing the Impaired Waters: the 303(d) List
- J3: Addressing Nutrients in Lake Erie
- J4: Summary of Results
- J5: Changes to the 2014 303(d) List
- J6: Schedule for TMDL Work
- Section K: Maps - Download individual maps below.
- Ohio 8-Digit Hydrologic Units
- Section 303(d) Human Health (Fish Tissue) Use Categories: Watershed Assessment Units
- Section 303(d) Human Health (Fish Tissue) Use Categories: Large River and Lake Erie Assessment Units
- Section 303(d) Recreation Use Categories: Watershed Assessment Units
- Recreation Use Index Scores: Watershed Assessment Units
- Section 303(d) Recreation Use Categories Large River and Lake Erie Assessment Units
- Recreation Use Index Scores: Large River Assessment Units
- Section 303(d) Aquatic Life Use Categories: Watershed Assessment Units
- Aquatic Life Use Index Scores: Watershed Assessment Units
- Section 303(d) Aquatic Life Use Categories Large River and Lake Erie Assessment Units
- Aquatic Life Use Index Scores: Large River Assessment Units
- Section 303(d) Public Drinking Water Supply Use Categories: Watershed Assessment Units
- Section 303(d) Public Drinking Water Supply Use Categories: Large River and Lake Erie Assessment Units
- Long-Term Monitoring Schedule
- Ohio Total Maximum Daily Load Program Progress
- Section L: Summary Tables of Waterbody Conditions, List of Prioritized Impaired Waters, and Monitoring and TMDL Schedules - Section L4 is also available individually below.
- L1: Status of Watershed Assessment Units
- L2: Status of Large River Assessment Units
- L3: Status of Lake Erie Assessment Units
- L4: Section 303(d) List of Prioritized Impaired Waters
- L5: Category 4B Demonstrations Contained in Approved Ohio TMDLs to Date
- Section M: An Overview of Ground Water Quality in Ohio
- M1: Introduction
- M2: Ohio’s Ground Water Programs
- M3: Ohio’s Major Aquifers
- M4: Site-Specific Ground Water Contamination Summary
- M5: Major Sources of Ground Water Contamination
- M6: Summary of Ground Water Quality by Aquifer
- M7: Ground Water-Surface Water Interaction
- M8: Conclusions and Future Directions for Ground Water Protection
- Section N: References
- Assessment Unit Summaries (online only)
2014
The Integrated Report meets both Clean Water Act 305(b) and 303(d) requirements, using a watershed assessment unit based on the 12-digit hydrologic unit.
Changes made between the 2012 Integrated Report and the 2014 Integrated Report are minor.
- Analysis and listings are based on more recent data (collected over the past two years).
- For the aquatic life use, the transition that began in 2010 of translating data evaluated at the 11-digit hydrologic unit (HU) size to the smaller 12-digit HU size continued. The few remaining relic categories will be dealt with as the areas are monitored again (see Section G).
- The assessment methdology for the public drinking water supply (PDWS) beneficial use was revised to include a new core indicator based on algae and associated cyanotoxins. The original 2006 PDWS assessment methodology identified algae as a possible supplemental indicator, but assessment units were not listed as impaired due to algae until now (see Section H).
- The report contains a new section on Lake Erie monitoring and assessment (see Section I5).
- The report contains an expanded discussion of wetlands in Ohio (see Section I1).
Interactive Map of Assessment Unit Summaries
Report
The report is available below in Adobe Acrobat format. Results summaries for individual assessment units are available via the interactive map online.
- Section B: Ohio’s Water Resources
- B1: Facts and Figures
- B2: 2020 Water Quality Goals
- Section C: Managing Water Quality
- C1: Program Summary – Surface Water
- C2: Program Summary – Environmental and Financial Assistance
- C3: Program Summary – Drinking and Ground Waters
- C4: Program Summary – Environmental Services
- C5: Cooperation among State Agencies and Departments
- C6: Funding Sources for Pollution Controls
- Section D: Framework for Reporting and Evaluation
- D1: Assessment Units
- D2: Ohio’s Water Quality Standards Use Designations
- D3: Sources of Existing and Readily Available Data
- D4: Evaluation of the Ohio River
- D5: Public Involvement in Compiling Ohio’s Section 303(d) List of Impaired Waters
- D6: Public Comments and Responses to Comments on Draft Report
- Section E: Evaluating Beneficial Use: Human Health (Fish Contaminants)
- E1: Background
- E2: Rationale and Evaluation Method
- E3: Results
- E4: Supplemental Information
- Section F: Evaluating Beneficial Use: Recreation
- F1: Background
- F2: Evaluation Method
- F3: Results
- Section G: Evaluating Beneficial Use: Aquatic Life
- G1: Background and Rationale
- G2: Evaluation Method
- G3: Results
- Section H: Evaluating Beneficial Use: Public Drinking Water Supply
- H1: Background
- H2: Evaluation Method
- H3: Results
- H4: Supplemental Information
- Section I: Considerations for Future Lists
- I1: Wetlands
- I2: Inland Lakes and Reservoirs
- I3: Mercury Reduction at Ohio EPA
- I4: Harmful Algal Blooms
- I5: Lake Erie
- Section J: Addressing Waters Not Meeting Water Quality Goals
- J1: Ohio’s 303(d) Listing Framework
- J2: Prioritizing the Impaired Waters: the 303(d) List
- J3: Summary of Results
- J4: Changes to the 2012 303(d) List
- J5: Schedule for TMDL Work
- Section K: Maps - Download individual maps below.
- Ohio 8-Digit Hydrologic Units
- Section 303(d) Human Health (Fish Tissue) Use Categories: Watershed Assessment Units
- Section 303(d) Human Health (Fish Tissue) Use Categories: Large River Assessment Units
- Section 303(d) Recreation Use Categories: Watershed Assessment Units
- Recreation Use Index Scores: Watershed Assessment Units
- Section 303(d) Recreation Use Categories Large River Assessment Units
- Recreation Use Index Scores: Large River Assessment Units
- Section 303(d) Aquatic Life Use Categories: Watershed Assessment Units
- Aquatic Life Use Index Scores: Watershed Assessment Units
- Section 303(d) Aquatic Life Use Categories Large River Assessment Units
- Aquatic Life Use Index Scores: Large River Assessment Units
- Section 303(d) Public Drinking Water Supply Use Categories: Watershed Assessment Units
- Section 303(d) Public Drinking Water Supply Use Categories: Large River Assessment Units
- Long-Term Monitoring Schedule
- Ohio Total Maximum Daily Load Program Progress
- Section L: Summary Tables of Waterbody Conditions, List of Prioritized Impaired Waters, and Monitoring and TMDL Schedules - Section L4 is also available individually below.
- L1: Status of Watershed Assessment Units
- L2: Status of Large River Assessment Units
- L3: Status of Lake Erie Assessment Units
- L4: Section 303(d) List of Prioritized Impaired Waters (Category 5)
- L5: Monitoring and TMDL Schedules for Ohio’s Watershed and Large River Assessment Units
- L6: Category 4B Demonstrations Contained in Approved Ohio TMDLs to Date
- Section M: An Overview of Ground Water Quality in Ohio
- M1: Introduction
- M2: Ohio’s Ground Water Programs
- M3: Ohio’s Major Aquifers
- M4: Facility Specific Ground Water Contamination Summary
- M5: Major Sources of Ground Water Contamination
- M6: Summary of Ground Water Quality by Aquifer
- M7: Ground Water-Surface Water Interaction
- M8: Conclusions and Future Directions for Ground Water Protection
2012
This integrated report meets both Clean Water Act 305(b) and 303(d) requirements, using a watershed assessment unit based on the 12-digit hydrologic unit.
2012 assessment unit summaries (available only online).
Changes made between the 2010 Integrated Report and the 2012 Integrated Report were minor.
- Analysis and listings are based on recent data (collected over the past two years).
- Forty beaches along Lake Erie’s shoreline were added to the beach analysis in Section F.
- For the aquatic life use, the transition that began in 2010 of translating data evaluated at the 11-digit hydrologic unit (HU) size to the smaller 12-digit HU size continued. The few remaining relic categories will be dealt with as those areas are monitored again.
- Approximately two years of E. coli data from facilities are available for the recreation use evaluation (no facility data were available in 2010 because of the WQS change from fecal coliform to E. coli). More data will be available in future IR cycles.
- A new subcategory “t” was defined to indicate those areas where a TMDL has been completed and information suggests that the 4A category may not tell the whole story.
- New 2020 water quality goals are established for all four beneficial uses included in the IR.
Report
-
Cover and front material [PDF 156K]
-
Section A: An Overview of Water Quality in Ohio [PDF 1,365K]
-
Section B: Ohio’s Water Resources [PDF 298K]
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B1: Facts and Figures
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B2: 2020 Water Quality Goals
-
-
Section C: Managing Water Quality [PDF 351K]
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C1: Program Summary – Surface Water
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C2: Program Summary – Environmental and Financial Assistance
-
C3: Program Summary – Drinking and Ground Waters
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C4: Program Summary – Environmental Services
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C5: Cooperation among State Agencies and Departments
-
C6: Funding Sources for Pollution Controls
-
-
Section D: Framework for Reporting and Evaluation [PDF 6,937K]
-
D1: Assessment Units
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D2: Ohio’s Water Quality Standards Use Designations
-
D3: Sources of Existing and Readily Available Data
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D4: Evaluation of the Ohio River
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D5: Public Involvement in Compiling Ohio’s Section 303(d) List of Impaired Waters
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D6: Public Comments and Responses to Comments on Draft Report
-
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Section E: Evaluating Beneficial Use: Human Health (Fish Contaminants) [PDF 441K]
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E1: Background
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E2: Rationale and Evaluation Method
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E3: Results
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E4: Supplemental Information
-
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Section F: Evaluating Beneficial Use: Recreation [PDF 776K]
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F1: Background
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F2: Evaluation Method
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F3: Results
-
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Section G: Evaluating Beneficial Use: Aquatic Life [PDF 202K]
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G1: Background and Rationale
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G2: Evaluation Method
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G3: Results
-
-
Section H: Evaluating Beneficial Use: Public Drinking Water Supply [PDF 1,124K]
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H1: Background
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H2: Evaluation Method
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H3: Results
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H4: Supplemental Information
-
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Section I: Considerations for Future Lists [PDF 277K]
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I1: Wetlands
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I2: Inland Lakes and Reservoirs
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I3: Mercury Reduction at Ohio EPA
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I4: Harmful Algal Blooms
-
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Section J: Addressing Waters Not Meeting Water Quality Goals [PDF 664K]
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J1: Ohio’s 303(d) Listing Framework
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J2: Prioritizing the Impaired Waters: the 303(d) List
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J3: Summary of Results
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J4: Changes to the 2012 303(d) List
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J5: Schedule for TMDL Work
-
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Section K: Maps [PDF 15,567K] - Download all Section K Maps here, or download individual maps below.
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Ohio 8-Digit Hydrologic Units [PDF 533K]
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Section 303(d) Human Health (Fish Tissue) Use Categories: Watershed Assessment Units [PDF 1,498K]
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Section 303(d) Human Health (Fish Tissue) Use Categories: Large River Assessment Units [PDF 382K]
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Section 303(d) Recreation Use Categories: Watershed Assessment Units [PDF 1,484K]
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Recreation Use Index Scores: Watershed Assessment Units [PDF 1,516K]
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Section 303(d) Recreation Use Categories: Large River Assessment Units [PDF 369K]
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Recreation Use Index Scores: Large River Assessment Units [PDF 394K]
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Section 303(d) Aquatic Life Use Categories: Watershed Assessment Units [PDF 1,469K]
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Aquatic Life Use Index Scores: Watershed Assessment Units [PDF 1,427K]
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Section 303(d) Aquatic Life Use Categories Large River Assessment Units [PDF 387K]
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Aquatic Life Use Index Scores: Large River Assessment Units [PDF 369K]
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Section 303(d) Public Drinking Water Supply Use Categories: Watershed Assessment Units [PDF 1,473K]
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Section 303(d) Public Drinking Water Supply Use Categories: Large River Assessment Units [PDF 466K]
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Long-Term Monitoring Schedule [PDF 1,462K]
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Ohio Total Maximum Daily Load Program Progress [PDF 1,686K]
-
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Section L: Summary Tables of Waterbody Conditions, List of Prioritized Impaired Waters, and Monitoring and TMDL Schedules [PDF 2,196K] - Section L4 is also available individually below.
-
L1: Status of Watershed Assessment Units
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L2: Status of Large River Assessment Units
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L3: Status of Lake Erie Assessment Units
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L4: Section 303(d) List of Prioritized Impaired Waters (Category 5) [PDF 1,471K]
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L5: Monitoring and TMDL Schedules for Ohio’s Watershed and Large River Assessment Units
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L6: Category 4B Demonstrations Contained in Approved Ohio TMDLs to Date
-
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Section M: An Overview of Ground Water Quality in Ohio [PDF 2,216K]
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M1: Introduction
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M2: Ohio’s Ground Water Programs
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M3: Ohio’s Major Aquifers
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M4: Facility Specific Ground Water Contamination Summary
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M5: Major Sources of Ground Water Contamination
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M6: Summary of Ground Water Quality by Aquifer
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M7: Ground Water-Surface Water Interaction
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M8: Conclusions and Future Directions for Ground Water Protection
-
-
Section N: References [PDF 22K]
2010
This integrated report meets both Clean Water Act 305(b) and 303(d) requirements, using a watershed assessment unit based on the 12-digit hydrologic unit.
While the overall approach to the report was the same as the past few reporting cycles, Ohio EPA made significant changes to the report.
2010 assessment unit summaries (available only online).
Listing by Beneficial Use
The most profound change to the 2010 Integrated Report was the change from listing by assessment unit to listing by each of the four beneficial uses within an assessment unit. In past reports, an impairment of one beneficial use caused the assessment unit to be listed as impaired regardless of the status of other uses. In the 2010 report, Ohio listed by beneficial use within each assessment unit, so uses that were attaining water quality standards and those with no data to assess were removed from the list of impaired waters (i.e., “delisted”). In general, listing by use allows more information to be transmitted and presents a more accurate picture of water quality in Ohio.
Size of Assessment Units
Ohio continued to use a watershed-based listing approach, but shifted to a smaller watershed assessment unit size. Some of the large river units were split into smaller pieces. Reporting at a finer scale allows a more refined picture of water quality in Ohio – just as a photograph with more “pixels” results in a clearer picture. To accommodate this change, methodologies for each of the listed uses – aquatic life, recreation, human health (via fish tissue), public drinking water supply – were revised.
Recreation Use Methodology
Several significant changes were made to the recreation use methodology. First, the methodology is changing from a pooled to a site-by-site analysis, similar to that used for the aquatic life use. The indicator organism shifted from fecal coliform to E. coli, which aligned with Ohio’s new water quality standards for recreation use.
Human Health Methodology
The methodology for the human health use (using fish tissue contaminant samples) was changed to be consistent with the methodology described in U.S. EPA’s 2009 guidance for implementing the methylmercury water quality criterion.
Report Format
Having more assessment units necessitated a change in how the report is presented. Past reports included about 100 pages of text, about 100 pages of summary tables, and detailed summary sheets for each of the 357 assessment units (watershed, large river and Lake Erie). For the 2010 report, the detailed summaries of assessment units alone would number more than 1,600 pages. The report will continue to be available both in paper and electronic formats. The detailed assessment unit information will be available only online.
New Content
For the first time in many years, the report included a section on ground water quality in Ohio. The report also previewed a possible methodology for including lakes in the aquatic life use listing decisions in 2012 (if rules are adopted). Looking further into the future, the report included more discussion of wetlands, including possible pathways to including wetlands in future listing decisions.
Report
- Cover and front matter [PDF 315K]
- Section A: Summary of Improvements and Results
[PDF 218K]
- A1: Changes in How Data Are Processed and Results Are Reported
- A2: Summary of Results
- A3: Water Quality Goals, Old and New
- Section B: Ohio’s Water Resources
[PDF 432K]
- B1: Facts and Figures
- B2: General Summary of Condition: Final Accounting of the “80 by 2010" Aquatic Life Use Goal
- B3: New 2020 Aquatic Life Use Goals
- Section C: Managing Water Quality
[PDF 328K]
- C1: Program Summary – Surface Water
- C2: Program Summary – Environmental and Financial Assistance
- C3: Program Summary – Drinking and Ground Waters
- C4: Program Summary – Environmental Services
- C5: Cooperation among State Agencies and Departments
- C6: Funding Sources for Pollution Controls
- Section D: Framework for Reporting and Evaluation
[PDF 2,475K]
- D1: Assessment Units
- D2: Ohio’s Water Quality Standards Use Designations
- D3: Sources of Existing and Readily Available Data
- D4: Evaluation of the Ohio River
- D5: Public Involvement in Compiling Ohio’s Section 303(d) List of Impaired Waters (including solicitation for external water quality data)
- D6: Public Comments and Responses to Comments on Draft Report
- Section E: Evaluating Beneficial Use: Human Health (Fish Contaminants)
[PDF 332K]
- E1: Background
- E2: Rationale and Evaluation Method
- E3: Results
- E4: Supplemental Information
- Section F: Evaluating Beneficial Use: Recreation
[PDF 485K]
- F1: Background
- F2: Evaluation Method
- F3: Results
- Section G: Evaluating Beneficial Use: Aquatic Life
[PDF 447K]
- G1: Background and Rationale
- G2: Evaluation Method
- G3: Results
- Section H: Evaluating Beneficial Use: Public Drinking Water Supply
[PDF 1,166K]
- H1: Background
- H2: Evaluation Method
- H3: Results
- H4: Supplemental Information
- Section I: Considerations for Future Lists
[PDF 130K]
- I1: Wetlands
- I2: Inland Lakes and Reservoirs
- I3: Mercury Reduction at Ohio EPA
- Section J: Addressing Waters Not Meeting Water Quality Goals
[PDF 428K]
- J1: Transforming the 2008 303(d) List
- J2: Prioritizing the Impaired Waters: the 303(d) List
- J3: Removing Waters from the 303(d) List
- J4: Schedule for TMDL Work
- Section K: Maps
[PDF 12,306K] - Download all Section K Maps here, or download individual maps below.
- Ohio 8-Digit Hydrologic Units [PDF 339K]
- Section 303(d) Human Health (Fish Tissue) Use Categories: Watershed Assessment Units [PDF 1,226K]
- Section 303(d) Human Health (Fish Tissue) Use Categories: Large River Assessment Units [PDF 265K]
- Section 303(d) Recreation Use Categories: Watershed Assessment Units [PDF 1,221K]
- Recreation Use Index Scores: Watershed Assessment Units [PDF 1,221K]
- Section 303(d) Recreation Use Categories Large River Assessment Units [PDF 260K]
- Recreation Use Index Scores: Large River Assessment Units [PDF 267K]
- Section 303(d) Aquatic Life Use Categories: Watershed Assessment Units [PDF 1,223K]
- Aquatic Life Use Index Scores: Watershed Assessment Units [PDF 1,225K]
- Section 303(d) Aquatic Life Use Categories Large River Assessment Units [PDF 263K]
- Aquatic Life Use Index Scores: Large River Assessment Units [PDF 265K]
- Section 303(d) Public Drinking Water Supply Use Categories: Watershed Assessment Units [PDF 1,233K]
- Section 303(d) Public Drinking Water Supply Use Categories: Large River Assessment Units [PDF 324K]
- Long-Term Monitoring Schedule [PDF 1,171K]
- Ohio Total Maximum Daily Load Program Progress [PDF 1,119K]
- Antidegradation Categories
[PDF 758K]
- High resolution PDF [1,473K]
- High resolution JPG [2,018K]
- Section L: Summary Tables of Waterbody Conditions, List of Prioritized Impaired Waters, and Monitoring and TMDL Schedules
[PDF 635K] - Sections L4 and L5 are also available individually below.
- L1: Status of Watershed Assessment Units
- L2: Status of Large River Assessment Units
- L3: Status of Lake Erie Assessment Units
- L4: Section 303(d) List of Prioritized Impaired Waters (Category 5) [PDF 198K]
- L5: Monitoring and TMDL Schedules for Ohio’s Watershed and Large River Assessment Units [PDF 195K]
- L6: Category 4B Demonstrations Contained in Approved Ohio TMDLs to Date
- Section M: Summary Tables for Delisting Waters from the 2008 303(d) List [PDF 329K]
- Section N: An Overview of Ground Water Quality in Ohio
[PDF 783K]
- N1: Introduction
- N2: Ohio’s Ground Water Programs
- N3: Ohio’s Major Aquifers
- N4: Facility Specific Ground Water Contamination Summary
- N5: Major Sources of Ground Water Contamination
- N6: Summary of Ground Water Quality by Aquifer
- N7: Ground Water-Surface Water Interaction
- N8: Conclusions and Future Directions for Ground Water Protection
- References [PDF 29K]
- Assessment Unit Summaries (online only)
Archives
2002
Several maps illustrate the information in the report and tables:
Individual pages from Table 1 and Appendix C are available via clickable maps:
-
- 2002 Integrated Water Quality Monitoring and Assessment Report
[PDF, 137K] This is the report text and small tables. Includes a discussion of Ohio's watershed focus, defining an "assessment unit," and the methodology used in the assessment. Includes Tables 3, 4, and 5, and Appendices A, B and D. Four large tables are provided separately:
- Table 1. Status of Large River Assessment Units (Detail Table) , 23 pages [PDF, 54K]
- Table 2. Status of Watershed (HUC11) Assessment Units (Summary Table) , 24 pages [PDF, 43K]
- Table 6. 303(d) List of Prioritized Impaired Waters (Category 5) , 16 pages [PDF, 31K]
- Table 7. Monitoring and TMDL Schedule for Ohio's Watershed and Large River Assessment Units , 16 pages [PDF, 33K]
- Appendix C. Detailed Information for Each 11-digit-HUC Assessment Unit [PDF, 749K] 331 pages: consists of a single-page summary for each of the 331 HUCs.
- Watershed (HUC11) Assessment Units [PDF, 1768K]
- Large River Assessment Units [PDF, 2039K]
- Aquatic Life Use Status of HUC11 Assessment Units [PDF, 2937K]
- Aquatic Life Use Status of Large River Assessment Units [PDF, 1823K]
- Recreational Use Status of HUC11 Assessment Units [PDF, 2939K]
- Recreational Use Status of Large River Assessment Units [PDF, 1843K]
- Categories of HUC11 Assessment Units [PDF, 2954K]
- Categories of Large River Assessment Units [PDF, 1784K]
- Priority of Impaired Waters: HUC11 Watersheds [PDF, 2939K]
- Ohio TMDLs in Progress [PDF, 2204K]
- Ohio Long-Term Monitoring Schedule [PDF, 2947K]
- Ohio Long-Term TMDL Schedule [PDF 2946K]
- Table 1. Status of Large River Assessment Units 9/25/02 update
- Appendix C. HUC 11 Assessment Units indexed by river name 9/27/02 update
- Appendix C. HUC 11 Assessment Units indexed by HUC code 9/27/02 update
- 2002 Integrated Water Quality Monitoring and Assessment Report
[PDF, 137K] This is the report text and small tables. Includes a discussion of Ohio's watershed focus, defining an "assessment unit," and the methodology used in the assessment. Includes Tables 3, 4, and 5, and Appendices A, B and D. Four large tables are provided separately:
2004
Main Text
2004 Integrated Water Quality Monitoring and Assessment Report [PDF 1,050K]
Appendices
Appendix A. Supplemental Materials: Consideration of Fish Consumption Advisory Information in Compiling Ohio’s Section 303(d) List of Impaired Waters [PDF 24K]. Appendix A consists of:
Appendix B. Summary Tables of Water Body Conditions, List of Prioritized Impaired Waters, and Monitoring and TMDL Schedules. Appendix B consists of:
Appendix C. Supplemental Materials: Public Involvement and Participation in Compiling Ohio’s Section 303(d) List of Impaired Waters [PDF 426K]. Appendix C consists of:
Appendix D. Water Body Assessment Unit Results. Appendix D consists of:
-
- Cover page
- Appendix A.1. Calculation of Fish Concentrations from Water Quality Standard Inputs
- Appendix A.2. Mercury Data from 20 Lakes and Rivers in the Lake Erie Basin with Water Body Specific FCAs
- Appendix A.3. List of FCA Waters in U.S. EPA Decision Document, Partial Approval/Disapproval of Ohio’s 2002 303(d) List
- Cover page [PDF 5K]
- Appendix B.1.1. Status of Watershed Assessment Units [PDF 53K]
- Appendix B.1.2. Status of Large River Assessment Units [PDF 12K]
- Appendix B.1.3. Status of Lake Erie Assessment Units [PDF 7K]
- Appendix B.2. Section 303(d) List of Prioritized Impaired Waters (Category 5) [PDF 45K]
- Appendix B.3. Monitoring and TMDL Schedules of Ohio’s Watershed and Large River Assessment Units [PDF 38K]
- Cover page
- Appendix C.1. Summary of Listing Recommendations of the Ohio TMDL External Advisory Group
- Appendix C.2. Solicitation for External Water Quality Data, 2004 Integrated Report Project (August 26, 2003)
- Appendix C.3. Web Pages Announcing 2004 IR Preparation
- Appendix C.4. Initial Comments on FCA Methods
- Appendix C.5. Notice of Availability and Request for Comments FWPCA Section 303(d) TMDL Priority List for 2004; List of Newspapers Publishing Notice
- Appendix C.6. Public Comments and Response to Comments
- Cover page [PDF 5K]
- Appendix D.1. Legend and Explanatory Notes [PDF 15K]
- Appendix D.2. Watershed Assessment Unit Results [PDF 849K]
- Appendix D.3. Large River Assessment Unit Results [PDF 65K]
- Appendix D.4. Lake Erie Assessment Unit Results [PDF 13K]
2006
Main Text
2006 Integrated Water Quality Monitoring and Assessment Report [PDF 1,164K]
Maps
Appendices
Appendix A Supplemental Information [PDF 71K]. Appendix A consists of:
Appendix B Public Involvement in Compiling Ohio’s Section 303(d) List of Impaired Waters [PDF 1,080K]. Appendix B consists of:
Appendix D Summary Tables of Water Body Conditions, List of Prioritized Impaired Waters, and Monitoring and TMDL Schedules [PDF 139K]. Appendix D consists of:
Appendix E Water Body Assessment Unit Results
Maps of the Assessment Units
Note: these maps were made available for the 2002 report and have not changed.
-
- Cover page [PDF 17K]
- Ohio Total Maximum Daily Load Program Progress (current status) [PDF 890K]
- Section 303(d) Reporting Category, Watershed Assessment Units [PDF 1,106K]
- Section 303(d) Reporting Category, Large River Assessment Units [PDF 437K]
- Aquatic Life Use Status, Watershed Assessment Units [PDF 2,680K]
- Aquatic Life Use Status, Large River Assessment Units [PDF 259K]
- Long-Term Monitoring Schedule [PDF 2,671K]
- A.1 Calculation of Fish Concentrations from Water Quality Standard Inputs
- A.2 Detailed Methodology for Use of Fish Tissue Contaminant Data
- A.3 What’s the Difference Between the Fish Consumption Advisory Decision and the Impairment Decision?
- A.4 Waters with Current Fish Tissue Data Where Inadequate Samples Exist to Determine Level of Impairment
- A.5 Waters with Only Historical Fish Tissue Data
- B.1 Summary of Listing Recommendations of the Ohio TMDL External Advisory Group
- B.2 Solicitation for External Water Quality Data, 2006 Integrated Report Project (December 6, 2005)
- B.3 Web Page Announcing 2006 IR Preparation
- B.4 Notice of Availability and Request for Comments FWPCA Section 303(d) TMDL Priority List for 2006
- B.5 Public Comments and Response to Comments
- D.1 Status by Assessment Unit Type
- D.1.1 Status of Watershed Assessment Units
- D.1.2 Status of Large River Assessment Units
- D.1.3 Status of Lake Erie Assessment Units
- D.2 Section 303(d) List of Prioritized Impaired Waters (Category 5) [PDF 47K]
- D.3 Monitoring and TMDL Schedules for Ohio’s Watershed and Large River Assessment Units
- Cover page [PDF 15K]
- E.1 Legend and Explanatory Notes [PDF 16K]
- E.2 Watershed Assessment Unit Results [PDF 893K]
- E.3 Large River Assessment Unit Results [PDF 65K]
- E.4 Lake Erie Assessment Unit Results [PDF 16K]
- Watershed (HUC11) Assessment Units [PDF 1,768K]
- Large River Assessment Units [PDF 2,039K]
2008
Main Text
Cover, Table of Contents, Acronyms
Section A: An Overview of Water Quality in Ohio: 2008
Section B: Ohio’s Water Resources . Section B consists of:
Section C: Managing Water Quality . Section C consists of:
Section D: Framework for Reporting and Evaluation . Section D consists of:
Section E: Evaluating Beneficial Use: Human Health (Fish Contaminants) . Section E consists of:
Section F: Evaluating Beneficial Use: Recreation . Section F consists of:
Section G: Evaluating Beneficial Use: Aquatic Life . Section G consists of:
Section H: Evaluating Beneficial Use: Public Drinking Water Supply . Section H consists of:
Section I: Considerations for Future Lists . Section I consists of:
Section J: Addressing Waters Not Meeting Water Quality Goals . Section J consists of:
Section K: Maps. Section K consists of:
Section L: Summary Tables of Waterbody Conditions, List of Prioritized Impaired Waters, and Monitoring and TMDL Schedules . Section L consists of:
Section M: Water Body Assessment Unit Results. Section M consists of:
Maps of the Assessment Units
Note: these maps were made available for the 2002 report and have not changed.
-
- B1: Facts and Figures
- B2: General summary of condition: progress toward the “80% by 2010” goal
- C1: Program Summary – Surface Water
- C2: Program Summary – Environmental and Financial Assistance
- C3: Program Summary – Drinking and Ground Waters
- C4: Program Summary – Environmental Services
- C5: Cooperation among State Agencies and Departments
- C6: Economic Costs and Benefits of Pollution Controls
- D1: Assessment Units
- D2: Ohio’s WQS Use Designations
- D3: Sources of Existing and Readily Available Data
- D4: Evaluation of the Ohio River
-
D5: Public Involvement in Compiling Ohio’s Section 303(d) List of Impaired Waters
- D5.1: Solicitation for External Water Quality Data, 2008 Integrated Report Project
- D5.2: Web Page Announcing 2008 IR Preparation
- D5.3: Notice of Availability and Request for Comments FWPCA Section 303(d) TMDL Priority List for 2008
- D6: Public Comments and Responses to Comments on Draft Report
- E1: Background
- E2: Evaluation Method and Rationale
- E3: Results
- E4: Supplemental Information
- E4.1: Calculation of Fish Concentrations from Water Quality Standards Inputs
- E4.2: What’s the Difference between the Fish Consumption Advisory Decision and the Impairment Decision?
- F1: Background
- F2: Evaluation Method
- F3: Results
- G1: Background and Rationale
- G2: Evaluation Method
- G3: Results
- H1: Background
- H2: Evaluation Method
- H3: Results
- H4: Supplemental Information
- I1: Wetlands
- I2: Inland Lakes and Reservoirs
- I3: Mercury Program at Ohio EPA
- I3.1: Ohio Law
- I3.2: Ohio Projects
- I3.3: Interagency Groups
- I3.4: Ohio Resources
-
I4: Preview of Potential 2010 Methodology
- I4.1: Human Health (Fish Contaminants)
- I4.2: Recreation
- I4.3: Aquatic Life
- I4.4: Public Drinking Water Supply
- J1: Assigning Waters to Categories
- J2: Prioritizing the Impaired Waters: the 303(d) List
- J3: Removing Waters from the 303(d) List
- J4: Schedule for TMDL Work
- Cover page
- Ohio Total Maximum Daily Load Program Progress (current status)
- Section 303(d) Reporting Category, Watershed Assessment Units
- Section 303(d) Reporting Category, Large River Assessment Units
- Aquatic Life Use Status, Watershed Assessment Units
- Aquatic Life Use Status, Large River Assessment Units
- Long-Term Monitoring Schedule
- L1: Status of Watershed Assessment Units
- L2: Status of Large River Assessment Units
- L3: Status of Lake Erie Assessment Units
- L4: Section 303(d) List of Prioritized Impaired Waters (Category 5)
- L5: Monitoring and TMDL Schedules for Ohio’s Watershed and Large River Assessment Units
1975-1996
- Section 305 (b), PL-92-500 Report Summary - 1975
- State of Ohio Annual Water Quality Report - 1977
- State of Ohio Annual Water Quality Report - 1978
- State of Ohio Biennial Water Quality Report Executive Summary Synopsis - 1980
- Ohio Lakes and Reserviors 305 (b) Report Volume VII - 1980
- Reference Document 1 Annual Summary Statistics - 1980
- Reference Document 4 305 (b) Fish Introduction - 1980
- Ohio Surface Water Quality and Pollutant Source Monitoring Program for FY'81 and FY'82 305(b) Report Volume II - 1982
- Ohio Volume IV 305 (b) Report - 1982
- Water Quality Report 305 (b) Report Volume II - 1984
- Water Quality 305(b) Executive Summary - 1987
- Ohio Water Quality 305 (b) Report - 1988
- Ohio Water Resource Inventory Volume 1 Executive Summary - 1990
- Ohio Water Resource Inventory Executive Summary - 1992
- State of Ohio Section 303(d) List - 1992
- State of Ohio Section 303(d) List - 1994
- State of Ohio Section 303(d) List - 1996
Water Resource Inventories
The intent is for the 305(b) report to be a routine check on the progress that states are making toward achieving the goals of the Clean Water Act. These reports focus on examining water resource quality over time and examining the effectiveness of water quality management programs.
Volume III - Ohio's Lakes, Ponds, and Reservoirs (1992)
- Executive Summary [PDF 7,600K]
- Volume 1 - Summary, Status and Trends [PDF 2,720K]
- Volume 3 - Ohio's Public Lakes, Ponds, and Reservoirs
- Executive Summary [PDF 3,890K]
- Volume I - Summary, Status and Trends [PDF 4,838K]
- Volume 2 - Ohio Fish Tissue Contaminant Monitoring [PDF 8,47K]
- Volume 3 - Ohio's Public Lakes, Ponds and Reservoirs [PDF 1,779K]
- Appendices, Vol I [PDF 2,065K]
The 1998 305(b) report is an addendum to the 1996 report that provides an update (adds 1995 and 1996 water year data) to the aquatic life statistics reported in the 1996 document. The 1996 report should still be used for its in-depth discussion of the status and trends in water quality in Ohio and a summary of the various water quality management programs areas. The three fact sheets listed here summarize the most current water quality status, a forecast analysis, and the causes and sources of aquatic life impairment in Ohio. The 1998 appendix document provides stream reach summaries completed (i.e., 1995 and 1996 water years) since the 1996 report.
- Addendum to 1996 Volume 1: Updated Statistics [PDF 3,138K]
- Addendum to 1996 Volume 1: Data Appendix [PDF 874K]
- Fact Sheet: Ohio River and Streams - 1998 Status [PDF 339K]
- Fact Sheet: Ohio Rivers and Streams - Forecast Analysis [PDF 1,000K]
- Fact Sheet: Ohio Rivers and Streams - Causes and Sources of Impairment [PDF 1,600K]
- Year 2000 Ohio Water Resource Inventory [PDF 8,330K]
- Appendices to the Year 2000 Ohio Water Resource Inventory [PDF 3,893K]
- Fact Sheet: Ohio Water Resource Inventory: Aquatic Life Status: Year 2000 [PDF 450K]
- Fact Sheet: Ohio Water Resource Inventory: Causes and Sources of Impairment: Year 2000 [PDF 238K]