Total Maximum Daily Load (TMDL) projects

A TMDL is the maximum amount of a pollutant a body of water can receive without violating water quality standards, and an allocation of that amount to the pollutant’s sources. The TMDL process identifies all sources of a pollutant and determines how much each source must reduce its contribution in order to meet the standard. Once a body of water is added to the Minnesota Impaired Waters List, a TMDL must be developed for it. After impaired waters are listed, the MPCA organizes them into TMDL projects. Each project may contain one or more waterbodies or segments of a waterbody.

Federal and state regulations and programs also require implementation of restoration measures to meet TMDLs. The measures must be completed within one year after the U.S. Environmental Protection Agency approves a TMDL study.

Below you'll find links to the various TMDL projects in Minnesota. Some studies are completed and awaiting EPA approval or are otherwise still in draft form, some have been approved, and some projects are still being studied and have yet to be drafted.

For more information

  • For assessment-related questions, contact Pam Anderson
  • For questions about TMDLs, contact Celine Lyman (651-757-2541, 800-657-3864)

 

WRAPS/TMDLs projects

Draft TMDLs go through an extensive technical review and public notice process before the MPCA submits them to the U.S. Environmental Protection Agency for final approval. Public comments on draft TMDL reports are typically accepted for 30 days. If there are substantial changes made to the draft as a result of public comment, it will be re-public noticed. Otherwise, the TMDL is submitted to EPA for final approval a minimum of 30 days following the conclusion of the public notice period. Some TMDLs receive significant public comments which may require several weeks for response preparation. EPA typically completes its review of the final draft within 30 days of receiving it from the MPCA, but some studies may require additional time.

Approved WRAPS, TMDLs/implementation plans

This spreadsheet includes WRAPS reports and implementation plans approved by the MPCA and TMDLs approved by the U.S. Environmental Protection Agency: PDF icon Approved TMDLs and WRAPS (wq-iw1-13c)

To see approved projects on a map, use the Impaired Waters Viewer and select the "Approved TMDLs" button.

TMDL projects TMDL approved
(U.S. EPA)
Implementation
plan approved (MPCA)
Basin
Big Fork Watershed 2017-12-20   Rainy River
Pine River Watershed WRAPS and TMDL 2017-11-14   Upper Mississippi River
Hawk Creek Watershed TMDL 2017-11-20   Minnesota River
Sandhill River Watershed 2017-06-27   Red River of the North
Pope County 8 Lakes: Excess nutrients 2017-03-01   Minnesota River
Coon Creek Watershed District 2016-09-26   Upper Mississippi River
12-Mile Creek DO TMDL (North Fork Crow River Watershed) 2016-09-26   Upper Mississippi River
Lower Minnesota River: Low Dissolved Oxygen 2004-09-28 2006-02 Minnesota River
Yellow Medicine (South Branch) TMDL: Fecal Coliform Bacteria 2004-09-30 2005-09-27 Minnesota River
Chippewa River: Un-ionized Ammonia 2004-10-29 2004-11 Minnesota River
Chippewa River Watershed WRAPS and TMDL 2017-06-07   Minnesota River
Long Prairie River Watershed: Low Dissolved Oxygen 2005-08-05 2006-01 Upper Mississippi River
Long Prairie River Watershed WRAPS and TMDL 2017-01-12   Upper Mississippi River
Lower Mississippi River Basin TMDL: Regional Fecal Coliform 2006-04-05 2007-09 Lower Mississippi River
Chippewa River TMDL: Fecal Coliform 2007-01-11 2016-02-29 Minnesota River
Lower Otter Tail River TMDL: Turbidity 2007-02-12 2007-02 Red River
Shingle Creek TMDL: Chloride 2007-02-14 2007-03-05 Upper Mississippi River
Sunrise River (North Branch) TMDL: Fecal Coliform Bacteria 2007-02-22 2007-02 St. Croix River
Lake Independence TMDL: Excess Nutrients 2007-02-23 2007-03 Upper Mississippi River
Carver-Bevens-Silver Creeks TMDL: Fecal Coliform 2007-03-14 2007-03 Minnesota River
Statewide TMDL: Mercury Pollutant Reduction Plan 2007-03-27 2009-10 Statewide
Lower Cannon River TMDL: Turbidity 2007-07-13 2009-10-14 Lower Mississippi River
Twin and Ryan Lakes TMDL: Excess Nutrients 2007-11-09 2007-11-13 Upper Mississippi River
Blue Earth River TMDL: Fecal Coliform Bacteria 2007-06-07 2007-11-14 Minnesota River
Pomme de Terre River TMDL: Fecal Coliform Bacteria 2007-12-07 2008-09-29 Minnesota River
Rock River TMDL: Fecal and Turbidity 2008-04-23 2008-10 Missouri and Des Moines River
Pipestone Creek TMDL: Fecal Coliform Bacteria and Turbidity 2008-07-03 2008-09 Missouri and Des Moines River
High Island Creek - Rush River: Fecal Coliform 2008-11-14 2009-07-14 Minnesota River
Burandt Lake: Excess Nutrients 2008-11-26 2009-06-09 Minnesota River
West Fork Des Moines River Watershed: Multiple Impairments 2008-12-18 2009-09-22 Missouri and Des Moines Rivers
Crystal Lake (Metro): Excess Nutrients 2009-03-25 2009-07-07 Upper Mississippi River
Long and Farquar Lakes: Excess Nutrients (Metro) 2009-04-08 2010-06-30 Lower Mississippi River
Groundhouse River: Fecal Coliform and Impaired Biota 2009-03-12 2009-07-15 St. Croix River
Hardwood Creek: Impaired Biota, Dissolved Oxygen (Metro) 2009-06-18 2009-07-10 Upper Mississippi River
Lower Wild Rice River TMDL: Turbidity 2009-07-17 2009-10-12 Red River
Schmidt, Pomerleau, and Bass Lakes: Excess Nutrients 2009-09-25 2009-12-03 Upper Mississippi River
Vermillion River TMDL: Turbidity 2009-09-29 2011-09-14 Lower Mississippi River
Golden Lake: Excess Nutrients (Metro) 2009-09-30   Upper Mississippi River
Clearwater River and 6 Lakes: Bacteria and Nutrients 2010-01-26 2010-05-19 Upper Mississippi River
Kohlman Lakes: Excess Nutrients (Metro) 2010-03-23 2010-05-06 Upper Mississippi River
Meadow Lake: Excess Nutrients (Metro) 2010-03-23 2010-06-14 Upper Mississippi River
Cedar Island, Pike and Eagle Lakes: Excess Nutrients 2010-04-14 2010-05-18 Upper Mississippi River
Comfort Lake - Forest Lake TMDL: Excess Nutrients 2010-06-07 2010-06-11 St. Croix River
Mustinka River: Turbidity 2010-06-08 2010-11-30 Red River
Knife River: Turbidity 2010-07-02 2011-12-09 Lake Superior
Silver Lake TMDL: Excessive Nutrients 2010-07-29 2011-05-25 Upper Mississippi River
Fish and Schwanz Lakes: Excess Nutrients (Metro) 2010-09-09 2010-11-24 Minnesota River
Reitz Lake: Excess Nutrients (Metro) 2010-09-20 2010-09-20 Minnesota River
Clearwater River - Five Lakes Nutrients TMDL (Albion, Augusta, Caroline, Henshaw and Swartout Lakes) 2010-09-28 2010-05-19 Upper Mississippi River
Carver Creek Lakes: Excess Nutrients (Metro) 2010-09-28 2010-11-12 Minnesota River
South Fork Crow River Lakes: Excess Nutrients (Metro) 2010-09-28 2010-11-03 Upper Mississippi River
Magda Lake: Excess Nutrients (Metro) 2010-09-30 2010-10-01 Upper Mississippi River
Wirth Lake: Excess Nutrients (Metro) 2010-10-25 2010-10-25 Upper Mississippi River
Lake Margaret: Excess Nutrients (Metro) 2010-10-26   Upper Mississippi River
Clearwater River (UM Basin) CD #44 to Lake Betsy: Dissolved Oxygen 2010-11-08   Upper Mississippi River
Nemadji River Watershed 2017-08-16   Lake Superior
Ninemile Creek: Impaired Biota, Turbidity & Chloride 2010-11-29   Minnesota River
Browns Creek: Lack of a coldwater assemblage and Impaired Biota 2010-12-21 2012-02-16 St. Croix River
Como Lake: Excess Nutrients 2010-12-23   Upper Mississippi River
Getchel, Unnamed, Stoney (GUS): Turbidity 2011-02-07 2014-06-30 Upper Mississippi River
Medicine Lake: Excessive Nutrients (Metro) 2011-02-08 2011-02-08 Upper Mississippi River
MinnehahaCreek Watershed Lakes: Excess Nutrients (Metro) 2011-04-25   Upper Mississippi River
Lake Sarah: Excess Nutrients (Metro) 2011-04-25 2011-09-16 Upper Mississippi River
Jessie Lake: Excess Nutrients 2011-05-04   Rainy River
Rabbit River: Turbidity 2011-06-14   Red River
Big Sandy Area Lakes: Excess Nutrients 2011-06-14 2013-05-22 Upper Mississippi River
Long and Ringo Lakes TMDL:Excess Nutrients 2011-07-20   Minnesota River
Sweeney Lake: Phosphorus 2011-08-10   Upper Mississippi River
Spring Lake-Upper Prior Lake: Excess Nutrients (Metro) 2011-09-14 2012-02-29 Minnesota River
Diamond Lake: Excess Nutrients 2011-09-21 2011-10-11 Upper Mississippi River
Pomme de Terre River Watershed: Turbidity 2011-09-21 2011-11-23 Minnesota River
Crystal, Keller, Lee, and Earley Lakes: Excess Nutrients 2011-09-30 2011-11-03 Minnesota River
Shingle and Bass Creeks: Impaired Biota & Dissolved Oxygen (Metro) 2011-11-04 2012-01-30 Upper Mississippi River
Little Rock Creek TMDL 2017-01-09   Upper Mississippi River
Little Rock Lake: Excess Nutrients 2012-02-02 2013-03-14 Upper Mississippi River
Cedar and McMahon Lakes: Excess Nutrients 2012-02-23 2012-06-18 Minnesota River
North Fork Crow River, Rice Lake: Excess Nutrients 2012-05-07 2012-06-04 Upper Mississippi River
Ann and Emma Lakes: Excess Nutrients 2012-05-22 2012-06-19 Upper Mississippi River
Zumbro River Watershed: Turbidity 2012-05-25 2012-08-28 Lower Mississippi River
Bald Eagle Lake: Excess Nutrients (Metro) 2012-06-11 2012-06-11 Upper Mississippi River
Elk River Watershed: Multiple Impairments 2012-06-14 2012-07-10 Upper Mississippi River
Martin and Typo Lakes: Excess Nutrients 2012-06-20 2012-08-08 St. Croix River
Lake St. Croix: Excess Nutrients 2012-08-08 2012-10-26 St. Croix River
Carnelian Marine St. Croix 10 Lake TMDL: Excess Nutrients 2012-08-18 2013-08-30 St. Croix River
Lake Shaokatan: Excess Nutrients 2012-09-20   Minnesota River
Carver-Bevens Creeks — Fecal Coliform Bacteria and Turbidity 2012-09-20 2013-07-24 Minnesota River
Mill Creek Bacteria and Pearl Lake Nutrients 2012-09-25 2014-06-30 Upper Mississippi River
Carver-Bevens Creeks — Fecal Coliform Bacteria and Turbidity 2012-09-26 2013-07-24 Minnesota River
Chisago Lakes: Nutrient/Eutrophication Biological Indicators 2013-02-20 2013-02-25 St. Croix River
Lac qui Parle River-Yellow Bank: Bacteria, Turbidity, and Low Dissolved Oxygen 2013-05-08 2013-06-20 Minnesota River
Carver Creek Lakes: Excess Nutrients (Metro) (Benton Lake) 2013-05-17 2013-09-16 Minnesota River
Ann River Watershed: Excess Nutrients and Impaired Biota 2013-06-03 2013-07-15 St. Croix River
Lake Osakis Watershed: Excess Nutrients 2013-06-05 2014-06-30 Upper Mississippi River
Bluff Creek: Turbidity and Impaired Fish Biota (Metro) 2013-06-28 2013-07-24 Minnesota River
Deer Creek: Turbidity 2013-08-12 2014-04-01 Lake Superior
Lower Crow River (North Fork): multiple impairments 2013-08-20   Upper Mississippi River
Peltier and Centerville Lakes: Excess Nutrients (Lino Lakes) (Metro) 2013-09-27   Upper Mississippi River
Sauk Lake: Excess Nutrients 2013-11-13 2014-05-30 Upper Mississippi River
Sauk Lake (Southwest Bay) TMDL 2017-06-07   Upper Mississippi River
Peltier and Centerville Lakes: Excess Nutrients (Peltier and Centerville Lakes) (Metro) 2013-11-25   Upper Mississippi River
Buffalo Creek - South Fork Crow River: Bacteria 2013-12-03   Upper Mississippi River
Buffalo River Watershed 2017-02-16   Red River of the North
Poplar River: Turbidity 2013-12-11 2014-02-06 Lake Superior
Cottonwood River: Fecal Coliform 2014-01-08   Minnesota River
Redwood River: Fecal Coliform 2014-01-21   Minnesota River
Lura Lake: Excess Nutrients 2014-02-19   Minnesota River
Minnehaha Creek Bacteria and Lake Hiawatha Excess Nutrients (Metro) 2014-02-24   Upper Mississippi River
Snake River Watershed 2014-03-31   St. Croix River
Vadnais Lake Area WMO: TMDL and Protection Study 2014-04-03 2014-07-25 Upper Mississippi River
Sunrise Watershed TMDL: Multiple Impairments 2014-04-28   St. Croix River
Upper Minnehaha Creek Watershed Lakes and Bacteria (Metro) 2014-06-26 2014-09-12 Upper Mississippi River
Upper Cannon Lakes: Excess Nutrients (Lake Volney) 2014-09-02   Lower Mississippi River
Upper Cannon Lakes: Excess Nutrients (Jefferson-German Lake Chain) 2014-09-02   Lower Mississippi River
Chippewa River: Turbidity 2014-09-29 2016-02-29 Minnesota River
Crow Wing Watershed TMDLs: Multiple Impairments 2014-11-19   Upper Mississippi River
Upper Mississippi River: Bacteria 2014-11-20 2016-02-18 Upper Mississippi River
Lower Mississippi River WMO Watershed WRAPS/TMDL 2014-11-24   Upper Mississippi River
Rice Creek Watershed District SW Urban Lakes 2015-02-26   Upper Mississippi River
North Fork Crow River Watershed WRAPS/TMDL 2015-05-08   Upper Mississippi River
Mississippi River - St. Cloud Watershed WRAPS/TMDL 2015-05-14   Upper Mississippi River
Mississippi River - Lake Pepin Watershed WRAPS/TMDL 2015-08-18   Lower Mississippi River
Pomme de Terre River Watershed TMDL 2015-08-26   Minnesota River
Vermillion River Watershed WRAPS and TMDL 2015-12-21   Lower Mississippi River
Goose Creek Watershed 2016-02-05   St. Croix River
Le Sueur River Watershed WRAPS and TMDL 2016-03-15   Minnesota River
Eagan Lakes TMDL 2015-12-21   Minnesota River
South Metro Mississippi River TMDL (Metro) 2016-04-26   Upper Mississippi River
Twin Cities Metro Area Chloride TMDL 2016-06-09 2016-02-26 Multiple basins
Valley Branch Watershed District 2016-03-08   St. Croix River
Mississippi River - Winona Watershed 2016-07-15   Lower Mississippi River
St. Clair Lake - Otter Tail River Watershed 2016-08-04   Red River
Cannon River Watershed 2017-02-16   Lower Mississippi River
Root River Watershed 2017-02-16   Lower Mississippi River
Mustinka River Watershed 2017-03-15   Red River of the North
Redeye River Watershed 2017-03-14   Upper Mississippi River
Yellow Medicine River Watershed 2017-03-28   Minnesota River
Elm Creek Watershed 2017-06-26   Upper Mississippi River
Rum River Watershed 2017-09-26   Upper Mississippi River
Pioneer Sarah Creek Watershed WRAPS and TMDL 2017-09-29   Upper Mississippi River
Miller Creek TMDL 2018-01-09   Lake Superior

Ramsey-Washington Metro WD

2017-09-29   Upper Mississippi River    

Sauk River Bacteria & Nutrient TMDL

2017-09-26   Upper Mississippi River    
Upper Red River of the North Watershed 2018-01-25   Red River
Zumbro River Watershed WRAPS and TMDL 2018-02-22   Lower Mississippi River
Missouri River Basin WRAPS and TMDL 2018-02-15   Missouri River
Little Fork River Watershed WRAPS and TMDL 2018-05-09   Rainy River

TMDLs underway

TMDLs projects typically require three to four years to complete. Each project page listed is linked to its individual web page to provide more specific information and staff contacts. Some of the project pages are still under construction.

Map of Major Basins in Minnesota

Lake Superior Basin

Lower Mississippi River Basin

Minnesota River Basin

Missouri and Des Moines River Basins

  • None at this time

Red River Basin

Rainy River Basin

  • Baudette River: Dissolved Oxygen
  • Little Fork River: Turbidity
  • Williams Creek: Dissolved Oxygen

St. Croix River Basin

  • None at this time

Twin Cities Metropolitan Area Watersheds

Upper Mississippi River Basin