TMDL and WRAPS guidance

TMDLs

• TMDL report template (wq-iw1-00)
• All things TMDL: A reference for writers and reviewers (wq-iw1-72)
• Reviewing total maximum daily load reports (wq-iw1-70)
• Margin of safety guidance (wq-iw1-57)
• Guidelines for reviewing TMDLs (U.S. EPA)
• TMDL support documents (U.S. EPA)
• Minnesota's TMDL prioritization framework 2022–2032 (wq-iw1-82)
• Minnesota's TMDL commitment list FY25–26 (wq-iw1-83)

Assessment and listing

• Minnesota's impaired waters list
• Surface water assessment grants (SWAG)
• Category 4b demonstrations: Answers to FAQs (wq-iw1-36)
• MPCA guidance for category 4b requests developed by third parties (wq-iw1-37)

WRAPS

• WRAPS report template (wq-ws4-03)
• WRAPS report strategy table (wq-ws4-03a)
• Maps in WRAPS reports (wq-ws4-03b)
• Incorporating lake protection strategies into WRAPS reports (wq-ws4-03c)
• Addressing lakes in WRAPS (wq-iw1-48)
• Watershed nutrient loads to accomplish Minnesota's Nutrient Reduction Strategy goals (wq-s1-86)

  This interim document will be updated in the 2025 NRS revision process.
• Attachment A: Approach and methods (wq-s1-86a)
• Watershed pollutant load reduction calculator

Stormwater and impaired waters

• Minnesota Stormwater Manual: TMDL guidance related to MS4s

Wastewater and impaired waters

• River Eutrophication Standards: TMDL wasteload allocation guidance (wq-iw1-67)
• TMDL guidance: Interpreting WLAs for the development of WQBELs (wq-iw1-32)
• Water quality trading
• Water quality trading guidance (wq-gen1-15)
• Wastewater additional guidance and information
• Phosphorus in wastewater

Water quality tools

• Watershed Health Assessment Framework (Minnesota DNR)
• Water quality tools and models (BWSR)
• Scenario Application Manager (HSPF–SAM)

Resources

• Water pollutants
• Index of biological integrity