Total Maximum Daily Loads (TMDLs)
Total Maximum Daily Loads (TMDLs) are EPA approved amounts of pollutant loading that can occur and have a water body meet water quality standards. This page is collection of links and resources to better understand, and meet, TMDL requirements.
[[file:Riverconfluence.jpg|300 px|thumb|alt=image of Miss and St Croix rivers confluence|Confluence of the St. Croix and Mississippi rivers. Note the St. Croix River is not impaired for sediment, while the Mississippi River is impaired.
Contents
TMDL guidance
- Summary of TMDL requirements in stormwater permits
- Forms, guidance, and resources for completing the TMDL annual report form
- Chloride
- tmdal Bacteria
- Dissolved oxygen, oxygen demand, temperature, and nitrogen
TMDL toolkit for MS4 permit compliance
- Overview of models used to meet MS4 TMDL permit requirements
- Recommendations and guidance for utilizing P8 to meet TMDL permit requirements
- Recommendations and guidance for utilizing WINSLAMM to meet TMDL permit requirements
- Recommendations and guidance for utilizing the MIDS calculator to meet TMDL permit requirements
- Recommendations and guidance for utilizing the MPCA Simple Estimator to meet TMDL permit requirements
- Recommendations and guidance for utilizing monitoring to meet TMDL permit requirements
- Case studies for monitoring to meet TMDL permit requirements
TMDL guidance and general information
- Overview of TMDLs
- Addressing TMDL Requirements in MS4 General Permit Applications and Stormwater Pollution Prevention Program Documents
- List of approved TMDLs with MS4 Wasteload Allocations
- MPCA guidance for setting wasteload allocations for regulated stormwater
- Technical guidance used by MPCA to develop guidelines for setting TMDL WLAs for regulated stormwater
- Case studies for regulated stormwater issues
- Guidance on what discharges should be included in the TMDL wasteload allocation for MS4 stormwater
- Fact sheet on what discharges should be included in the TMDL wasteload allocation for MS4 stormwater
- Guidance for addressing large watershed TMDL studies
- Guidance for developing TMDL implementation plans for MS4 stormwater
- Fact sheet for developing TMDL implementation plans for permitted MS4 stormwater
- File:Guidance on What Discharges Should be Included in the TMDL Wasteload Allocation for MS4 Stormwater.docx - August 2010
- Construction activity by county
Information received from MS4 permittees
Links and other resources
- Links for TMDLs - we should get rid of this page
- Visit the MPCA TMDL Project page for information on specific projects across the state
- Total Suspended Solids (TSS)
- Phosphorus
- Bacteria in stormwater
- Chloride in stormwater
- Protection and restoration of receiving waters