The Division of Surface Water (DSW) includes several programs that support the Clean Water Acts fishable, swimmable goals for all surface waters in Ohio. These programs assess the quality of the surface waters, set standards for protection of the waters and establish plans to bring impaired waters back into attainment with water quality goals. See the links to individual program pages on the right.

Documents Available for Comment

The Maumee Watershed Nutrient TMDL Project Draft Preliminary Modeling Results is now available for review and comment.  The comment period ends at 5:00 PM on August 1, 2022.

The Draft Quality Assurance Project Plan For CWA Section 319(h) Pre- and Post- Implementation Monitoring for Fiscal Year 2022 Projects is now available for review and comment. The comment period ends at 5:00 p.m. on August 1, 2022.

The Southeast Ohio River Tributaries (Little Scioto, Pine, & Ice Creek) Draft Loading Analysis Plan is now available for review and comment. The comment period ends at 5:00 p.m. on July 1, 2022.

Study Plan

CWA Section 319(h) Pre- and Post- Implementation Monitoring for Fiscal Year 2022 Projects

• Draft Quality Assurance Project Plan

Inland Lakes

• Draft Quality Assurance Project Plan
• Fact Sheet

Lake Erie Monitoring

• Draft Quality Assurance Project Plan
• Fact Sheet

Hocking River Watershed

• Draft Quality Assurance Project Plan
• Fact Sheet

Upper Ohio River Tributaries

• Draft Quality Assurance Project Plan
• Fact Sheet

Wabash and Upper Great Miami River Watersheds

• Draft Quality Assurance Project Plan
• Fact Sheet

Biological and Water Quality Report

No documents are available for comment at this time. 

Loading Analysis Plan

Southeast Ohio River Tributaries (Little Scioto, Pine, & Ice Creek)

• Draft Loading Analysis Plan
• Fact Sheet

Lake Erie Central Basin Tributaries

• Draft Loading Analysis Plan
• Fact Sheet

Rocky River 

• Draft Loading Analysis Plan
• Fact Sheet

Preliminary Modeling Results

Maumee Watershed Nutrient TMDL Draft Preliminary Modeling Results

• Fact Sheet
• Draft Preliminary Modeling Results Report
• Appendix 1 - Appendix 1 Methods and Calculations for Estimates of Livestock and Poultry in the Maumee Watershed in Ohio and the Relative Proportion of Manure Phosphorus Generated Annually to Crop Demand
• Appendix 2 – Maumee Watershed SWAT Models Review
• Appendix 3 – Individual NPDES Wasteload Allocations
• Appendix 4 – Near-Field TMDL Reports in the Maumee Watershed
• Appendix 5 – Works Cited

Comment deadline is 5:00 PM on August 1, 2022. Additional information on this project is available on the TMDL project webpage.

TMDL

No documents are available for comment at this time.