SOUTH DAKOTA Department of
Environment & Natural Resources

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Watershed Protection

Nonpoint Source Pollution Total Maximum Daily Loads (TMDLs) -
Schedule & Summaries


 

The schedule and status of SD DENR nonpoint source pollution total maximum daily load (TMDL) projects, developed in accordance with Section 303(d) of the federal Clean Water Act, are found through links in the map and table below. Public participation is strongly encouraged throughout all project phases.

National 303(d) Program Vision

The National 303(d) Program Vision is a new effort by EPA and the states to more effectively restore and protect waters by using a systematic process of prioritizing TMDL development and implementing alternative approaches and protection activities. Six elements of the South Dakota Vision are discussed and include: engagement of stakeholders and the public, the TMDL prioritization process, protection activities, integrating the Vision into other programs, alternatives to developing TMDLs and assessment activities used in the Vision.

Major River Systems in South Dakota
Click on a watershed in the map below to go to TMDLs associated with that watershed.South Dakota Watersheds Map Little Missouri Watershed Grand River Watershed Moreau River Watershed Belle Fourche River Watershed Cheyenne River Watershed Bad River Watershed White River Watershed Niobrara River Watershed Missouri River Watershed Vermillion River Watershed Big Sioux River Watershed Minnesota River Watershed Red River Watershed Missour River Watershed

TMDL Schedule & Summaries
Click on a Segment or Lake Name to see a project summary in Adobe (.pdf) format.
Click on an Impairment to learn more about the impairment.
Click on a Status to learn more about the status.

Statewide TMDLs

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Statewide

Statewide

Mercury in Fish Tissue

TMDL Approved

Mar. 2016

N/A

Statewide 2016 Erratum to Mercury TMDL

Mercury in Fish Tissue

TMDL Approved Nov. 2016 N/A
Statewide 2016 Addendum to Mercury TMDL Mercury in Fish Tissue TMDL Approved August 2016 2016

Bad River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Freeman Lake Jackson County Chlorophyll-a Not Initiated   2014

Freeman Lake

Jackson County

Nitrate/Selenium

TMDL Approved

Feb. 2001

1998

Freeman Lake

Jackson County

DO

Not Initiated

 

2010

Freeman Lake

Jackson County

TDS/Cond

TMDL Approved

Sept. 2012

2006

Hayes Lake Stanley County Mercury in Fish Tissue TMDL Approved March 2016 2016

Hayes Lake

Stanley County

TSI/Chlorophyll-a

TMDL Approved

Sept. 2004

1998

Murdo Dam

Jones County

DO

Not Initiated

  2012
Murdo Dam Jones County Mercury in Fish Tissue TMDL Approved March 2016 2016
Sheriff Dam Jones County Mercury in Fish Tissue TMDL Approved April 2016 2016

Waggoner Lake

Haakon County

Chlorophyll-a

Not Initiated

 

2010

Streams

Bad River

Stanley County line to mouth

Cond

Not Initiated

  2014
Bad River Stanley County line to mouth E. Coli Not Initiated   2016

Bad River

Stanley County line to mouth

TSS

TMDL Approved

Feb 2001 1998

Belle Fourche River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Belle Fourche Reservoir Butte County Mercury in Fish Tissue TMDL Approved March 2016 2016

Iron Creek Lake

Lawrence County

Temp

Not Initiated

 

2010

Mirror Lake East Lawrence County Temp Not Initiated   2006
Mirror Lake West Lawrence County Temp Not Initiated   2008
Newell City Pond Butte County Temp Not Initiated   2010
Newell Lake Butte County Mercury in Fish Tissue TMDL Approved March 2016 2012

Streams

Bear Butte Creek Strawberry Creek to near Bear Den Mountain TSS TMDL Approved

Aug. 2007

2006

Belle Fourche River

Wyoming border to Redwater River

TSS

TMDL Approved

Feb. 2005

2002

Belle Fourche River

Wyoming border to Redwater River

Fecal

TMDL Approved

Oct. 2011

2002

Belle Fourche River

Wyoming border to Redwater River

E. Coli

TMDL Approved

Aug. 2017

2012

Belle Fourche River

Redwater River to Whitewood Creek

TSS

TMDL Approved

Feb. 2005

2002

Belle Fourche River

Whitewood Creek to Willow Creek

TSS

TMDL Approved

Feb. 2005

2002

Belle Fourche River Whitewood Creek to Willow Creek E. Coli Not Initiated   2016

Belle Fourche River

Willow Creek to Alkali Creek

TSS

TMDL Approved

Feb. 2005

1998

Belle Fourche River

Alkali Creek to mouth

E. Coli

TMDL Approved

Oct. 2011

2002

Belle Fourche River

Alkali Creek to mouth

Fecal

TMDL Approved

Oct. 2011

2002

Belle Fourche River

Alkali Creek to mouth

TSS

TMDL Approved

Feb. 2005

2002

Deadwood Creek

Rutabaga Gulch to Whitewood Creek

E. coli

Assessment Initiated

April 2014

2014

Horse Creek

Indian Creek to mouth

TSS

TMDL Approved

Feb. 2005

2002
Horse Creek Indian Creek to mouth E. coli Not Initiated   2016

Strawberry Creek

Headwaters to mouth

Cd

TMDL Approved

April 2010

1998

West Strawberry Creek

Headwaters to mouth

Fecal

TMDL Approved

April 2011

2008

Whitewood Creek

Deadwood Creek to Spruce Gulch

E. coli

TMDL Approved

July 2011

1998

Whitewood Creek

Deadwood Creek to Spruce Gulch

Fecal

TMDL Approved

July 2011

1998

Whitewood Creek

Spruce Gulch to Sandy Creek

E. coli

Assessment Initiated

April 2014

2012

Whitewood Creek

Spruce Gulch to Sandy Creek

Fecal

Assessment Initiated

April 2014

2014

Whitewood Creek

Sandy Creek to I-90

pH

Not Initiated

 

2006

Whitewood Creek I-90 to Crow Creek E. coli  Not Initiated    2014

Whitewood Creek

I-90 to Crow Creek

pH

Not Initiated

 

2010

Whitewood Creek

Crow Creek to mouth

TSS

Assessment Initiated

April 2014

2010

Whitewood Creek Crow Creek to mouth E. coli Not Initiated   2016

Big Sioux River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Albert, Lake

Kingsbury County

DO

Not Initiated

 

2014

Albert, Lake Kingsbury County Mercury in Fish Tissue TMDL Approved March 2016 2016

Alvin, Lake

Lincoln County

TSI/Fecal

TMDL Approved

Nov. 2001

1998

Antelope Lake Day County Mercury in Fish Tissue TMDL Approved March 2016 2016
Bitter Lake Day County Mercury in Fish Tissue TMDL Approved March 2016 2004

Blue Dog Lake

Day County

pH

Not Initiated

 

2010

Blue Dog Lake

Day County

TSI/Fecal

TMDL Approved

Feb. 2001

1998

Brant Lake

Lake County

TSI

TMDL Approved

April 1999

1998

Brush Lake Brookings County Mercury in Fish Tissue TMDL Approved March 2016 2016

Bullhead Lake

Deuel County

Chlorophyll-a

Assessment Initiated

March 2017

2010

Clear Lake

Deuel County

TSI/Sed

TMDL Approved

Feb. 2001

1998

Clear Lake Hamlin County Mercury in Fish Tissue TMDL Approved March 2016 2016
Diamond Lake Minnehaha County Mercury in Fish Tissue TMDL Approved March 2016 2016
Dry Lake Codington County Mercury in Fish Tissue TMDL Approved March 2016 2016
Dry Lake #2 Clark County Mercury in Fish Tissue TMDL Approved March 2016 2016

East Oakwood Lake

Brookings County

pH/TSI/Chlorophyll-a

TMDL Approved

June 2008

1998

Enemy Swim Lake Day County Mercury in Fish Tissue TMDL Approved March 2016 2016
Goldsmith Lake Brookings County Mercury in Fish Tissue TMDL Approved March 2016 2016
Goose Lake Codington County Mercury in Fish Tissue TMDL Approved March 2016 2016
Herman, Lake Lake County Mercury in Fish Tissue TMDL Approved March 2016 2016

Herman, Lake

Lake County

TSI/Chlorophyll-a

TMDL Approved

Sept. 2004

1998

Kampeska, Lake Codington County Mercury in Fish Tissue TMDL Approved March 2016 2016

Kampeska, Lake

Codington County

Nutrients/Sed

Special Approvals

Dec. 1996

Pre 1998

Long Lake

Codington County

Mercury in Fish Tissue

TMDL Approved

March 2016

2014

Madison, Lake

Lake County

TSI/Chlorophyll-a

TMDL Approved

April 1999

1998

Minnewasta Lake

Day County

Chlorophyll-a

Not Initiated

 

2014

Minnewasta Lake

Day County

Mercury in Fish Tissue

TMDL Approved

March 2016

2014

North Island Lake

Minnehaha County

Mercury in Fish Tissue

TMDL Approved

March 2016

2008

Pelican Lake

Codington County

Nutrients/Sed

Special Approvals

Dec. 1996

Pre 1998

Poinsett, Lake Hamlin County Mercury in Fish Tissue TMDL Approved March 2016 2016

Poinsett, Lake

Hamlin County

Nutrients

TMDL Approved

Dec. 1996

Pre 1998

Reid Lake

Clark County

Mercury in Fish Tissue

TMDL Approved

March 2016

2012

Rush Lake Day County

Mercury in Fish Tissue

TMDL Approved

March 2016 2016

School Lake

Deuel County

TSI

TMDL Approved

Sept. 2008

1998

Sinai, Lake Brookings County Mercury in Fish Tissue TMDL Approved March 2016 2016

Swan Lake

Clark County

Mercury in Fish Tissue

TMDL Approved

March 2016

2014

Twin Lake/W. Hwy 81

Kingsbury County

Mercury in Fish Tissue

TMDL Approved

March 2016

2004

Twin Lakes

Minnehaha County

Mercury in Fish Tissue

TMDL Approved

March 2016

2010

Waubay Lake

Day County

Chlorophyll-a

Not Initiated

 

2014

Waubay Lake

Day County

Mercury in Fish Tissue TMDL Approved March 2016 2016

West Oakwood Lake

Brookings County

TSI/Chlorophyll-a

TMDL Approved

June 2008

2002

Streams

Beaver Creek

Big Sioux River to S9, T98N, R49W

Fecal

TMDL Approved

Aug. 2011

2010

Beaver Creek

Split Rock Creek to SD-Minn. border

E. coli

Not Initiated

 

2014

Beaver Creek

Split Rock Creek to SD-Minn. border

Fecal/TSS

TMDL Approved

May 2008

2008

Big Sioux River

S28, T121N, R52W to Lake Kampeska

DO

Not Initiated

 

2002

Big Sioux River

S28, T121N, R52W to Lake Kampeska

E. coli

TMDL Public Noticed

April 2012

2010

Big Sioux River Lake Kampeska to Willow Creek DO Not Initiated   2014
Big Sioux River Lake Kampeska to Willow Creek E. coli Not Initiated   2016

Big Sioux River

Willow Creek to Stray Horse Creek

Fecal

TMDL Approved

June 2008

2004

Big Sioux River

Willow Creek to Stray Horse Creek

E. coli

TMDL Approved

Aug. 2011

2010

Big Sioux River Stray Horse Creek to near Volga E. coli Not Initiated   2016
Big Sioux River Near Volga to Brookings TSS Not Initiated   2004

Big Sioux River

Brookings to Brookings/Moody County Line

TSS

Not Initiated

 

1998

Big Sioux River Brookings/Moody County Line to S2, T104N, R49W Mercury in Fish Tissue TMDL Approved March 2016 2016
Big Sioux River Brookings/Moody County Line to S2, T104N, R49W E. coli Not Initiated   2016
Big Sioux River Brookings/Moody County Line to S2, T104N, R49W TSS TMDL Approved May 2008 1998

Big Sioux River

S2, T104N, R49W to I-90

E. coli

TMDL Approved

Sept. 2012

2010

Big Sioux River

S2, T104N, R49W to I-90

Fecal

TMDL Approved

May 2008

1998

Big Sioux River

S2, T104N, R49W to I-90

TSS

TMDL Approved

Dec. 2012

1998

Big Sioux River

I-90 to diversion return

E. coli/Fecal

TMDL Approved

Sept. 2012

2010

Big Sioux River

I-90 to diversion return

TSS

TMDL Approved

Dec. 2012

1998

Big Sioux River

Diversion return to SF WWTF

E. coli/Fecal

TMDL Approved

Sept. 2012

2010

Big Sioux River

Diversion return to SF WWTF

TSS

TMDL Approved

Dec. 2012

1998

Big Sioux River

SF WWTF to above Brandon

E. coli/Fecal

TMDL Approved

Sept. 2012

2010

Big Sioux River

SF WWTF to above Brandon

TSS

TMDL Approved

Dec. 2012

1998

Big Sioux River

Above Brandon to Nine Mile Creek

E. coli

Not Initiated

 

2010

Big Sioux River

Above Brandon to Nine Mile Creek

Fecal

TMDL Approved

Jan. 2008

1998

Big Sioux River

Above Brandon to Nine Mile Creek

TSS

Not Initiated

 

1998

Big Sioux River

Nine Mile Creek to near Fairview

E. coli

Not Initiated

 

2010

Big Sioux River

Nine Mile Creek to near Fairview

Fecal

TMDL Approved

Jan. 2008

1998

Big Sioux River

Nine Mile Creek to near Fairview

TSS

Not Initiated

 

1998

Big Sioux River

Fairview to near Alcester

E. coli

Not Initiated

 

2010

Big Sioux River

Fairview to near Alcester

Fecal

TMDL Approved

Jan. 2008

1998

Big Sioux River

Fairview to near Alcester

TSS

TMDL Approved

Feb. 2010

1998

Big Sioux River

Near Alcester to Indian Creek

E. coli

Not Initiated

 

2010

Big Sioux River

Near Alcester to Indian Creek

Fecal

TMDL Approved

Jan. 2008

1998

Big Sioux River

Near Alcester to Indian Creek

TSS

TMDL Approved

Feb. 2010

1998

Big Sioux River

Indian Creek to mouth

E. coli

Not Initiated

 

2010

Big Sioux River

Indian Creek to mouth

Fecal

TMDL Approved

Jan. 2008

1998

Big Sioux River

Indian Creek to mouth

TSS

TMDL Approved

Feb. 2010

1998

Brule Creek

Big Sioux River to its East and West Forks

E. coli

Not Initiated

 

2014

Brule Creek

Big Sioux River to its East and West Forks

Fecal

TMDL Approved

June 2011

2008

East Brule Creek

Confluence with Brule Creek to S3, T95N, R49W

Fecal

TMDL Approved

March 2011

2008

East Brule Creek

Confluence with Brule Creek to S3, T95N, R49W

TSS

Not Initiated

 

2008

Flandreau Creek

Moody County

E. coli

Not Initiated

 

2014

Flandreau Creek

Moody County

Fecal

TMDL Approved

May 2008

2008

Hidewood Creek

Hamlin County

Fecal

TMDL Approved

June 2008

2008

Jack Moore Creek

Moody County

Fecal

TMDL Approved

May 2008

2008

North Deer Creek

Brookings County

Fecal

TMDL Approved

May 2008

2008

Peg Munky Run Creek

Deuel County

Fecal

TMDL Approved

Aug. 2011

2008

Pipestone Creek

Moody and Minnehaha Counties

E. coli

TMDL Approved

Sept. 2012

2010

Pipestone Creek

Moody and Minnehaha Counties

Fecal

TMDL Approved

May 2008

2008

Six Mile Creek

Brookings County

E. coli

Assessment Initiated

July 2011 2014

Six Mile Creek

Brookings County

Fecal

Assessment Initiated

May 2008 2008

Skunk Creek

Brandt Lake to mouth

E. coli

Assessment Initiated

Dec. 2012

2014

Skunk Creek

Brandt Lake to mouth

Fecal

TMDL Approved

May 2008

2008

Split Rock Creek At Corson Fecal

TMDL Approved

May 2008

2006

Split Rock Creek

At Corson

TSS

TMDL Approved

May 2008

2006

Spring Creek

Big Sioux River to S22, T109, R47W

Fecal

TMDL Approved

May 2008

2008

Stray Horse Creek

Big Sioux River to S26, T116, R51W

Fecal

TMDL Approved

June 2008

2008

Union Creek

BSR to confluence with East and West Forks

Fecal

TMDL Approved

Aug. 2011

2008

Union Creek

BSR to confluence with East and West Forks

TSS

Not Initiated

 

2008

Willow Creek

Big Sioux River to S7, T117N, R50W

Fecal

TMDL Approved

June 2008

2008

Cheyenne River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Center Lake

Custer County

TSI

TMDL Approved

Aug. 2007

1998

Center Lake

Custer County

pH

TMDL Approved

March 2011

1998

Center Lake

Custer County

Temp

Not Initiated

 

2010

Cold Brook Reservoir

Fall River County

Temp

Not Initiated

 

2006

Curlew Lake Meade County Mercury in Fish Tissue TMDL Approved March 2016 2016

Deerfield Lake

Pennington County

Temp

Not Initiated

 

2010

Horsethief Lake

Pennington County

pH

TMDL Approved

March 2011

1998

Legion Lake

Custer County

pH

TMDL Approved

March 2011

2006

Legion Lake

Custer County

TSI

TMDL Approved

Sept. 2008

1998

New Wall Lake

Pennington County

pH

Not Initiated

 

2010

Sheridan Lake

Pennington County

Mercury in Fish Tissue TMDL Approved March 2016 2016
Sheridan Lake Pennington County DO Not Initiated   2006

Sheridan Lake

Pennington County

Temp

Not Initiated

 

2006

Sheridan Lake

Pennington County

TSI

TMDL Approved

Aug. 2006

2002

Stockade Lake Custer County Mercury in Fish Tissue TMDL Approved March 2016 2016

Sylvan Lake

Custer County

TSI

TMDL Approved

Sept. 2005

1998

Sylvan Lake

Custer County

Temp

Not Initiated

 

2008

Sylvan Lake Custer County pH TMDL Approved August 2016 2008

Streams

Battle Creek

Teepee Gulch Creek to SD Hwy 79

E. Coli

TMDL Approved

Feb. 2014

2012

Battle Creek

Teepee Gulch Creek to SD Hwy 79

Fecal

TMDL Approved

Feb. 2014

2012

Battle Creek

SD Hwy 79 to mouth

E. Coli

TMDL Approved

Feb. 2014

2012

Battle Creek

SD Hwy 79 to mouth

Fecal

TMDL Approved

Feb. 2014

2012

Beaver Creek Wyoming border to Cheyenne River Cond Not Initiated   2004
Beaver Creek Wyoming border to Cheyenne River Salinity/SAR Not Initiated   2006

Beaver Creek

Wyoming border to Cheyenne River

TDS

Not Initiated

 

2004

Beaver Creek

Wyoming border to Cheyenne River

Fecal

TMDL Approved

March 2010

2006

Beaver Creek

Near Buffalo Gap

Fecal

TMDL Approved

Sept. 2012

2006

Boxelder Creek Cheyenne River to S22, T2N, R8E E. Coli Not Initiated   2016
Cheyenne River Wyoming border to Beaver Creek Cond Not Initiated   2004
Cheyenne River Wyoming border to Beaver Creek SAR Not Initiated   2004
Cheyenne River Wyoming border to Beaver Creek TDS Not Initiated   2004

Cheyenne River

Wyoming border to Beaver Creek

TSS

Not Initiated

 

2012

Cheyenne River

Beaver Creek to Cascade Creek

E. coli

Not Initiated

 

2014

Cheyenne River Beaver Creek to Cascade Creek Cond Not Initiated   2004

Cheyenne River

Beaver Creek to Cascade Creek

TSS

Not Initiated

 

2012

Cheyenne River

Beaver Creek to Cascade Creek

TDS

Not Initiated

 

2004

Cheyenne River Beaver Creek to Cascade Creek Salinity/SAR Not Initiated   2008

Cheyenne River

Fall River to Cedar Creek

E. coli

TMDL Approved

Sept. 2010

2002

Cheyenne River

Fall River to Cedar Creek

Fecal

TMDL Approved

Sept. 2010

2002

Cheyenne River

Fall River to Cedar Creek

TSS

Not Initiated

 

2002

Cheyenne River

Cedar Creek to Belle Fourche River

E. coli

TMDL Approved

Sept. 2010

1998

Cheyenne River

Cedar Creek to Belle Fourche River

Fecal

TMDL Approved

Sept. 2010

1998

Cheyenne River

Cedar Creek to Belle Fourche River

TSS

Not Initiated

 

1998

Cheyenne River

Belle Fourche River to Bull Creek

E. coli

TMDL Approved

Sept. 2010

1998

Cheyenne River

Belle Fourche River to Bull Creek

Fecal

TMDL Approved

Sept. 2010

1998

Cheyenne River

Belle Fourche River to Bull Creek

TSS

Not Initiated  

1998

Cheyenne River

Bull Creek to Lake Oahe

E. coli

TMDL Approved

Sept. 2010

2002

Cheyenne River

Bull Creek to Lake Oahe

Fecal

TMDL Approved

Sept. 2010

2002

Cheyenne River

Bull Creek to Lake Oahe

TSS

Not Initiated  

2002

Fall River

Hot Springs to mouth

Temp

Not Initiated

 

2004

Highland Creek Wind Cave National Park and near Pringle pH Not Initiated   2006

Highland Creek

Wind Cave National Park and near Pringle

Temp

Not Initiated

 

2006

Horsehead Creek

At Oelrichs

Cond

Not Initiated

 

2004

Rapid Creek Canyon Lake to S15, T1N, R8E Fecal TMDL Approved Sept. 2010 1998
Rapid Creek S15, T1N, R8E to above Farmingdale E. coli Not Initiated   2014
Rapid Creek S15, T1N, R8E to above Farmingdale Fecal TMDL Approved Sept. 2010 1998

Rapid Creek

Above Farmingdale to Cheyenne River

Fecal

TMDL Approved

Sept. 2010

1998

Rapid Creek

Above Farmingdale to Cheyenne River

E. coli

TMDL Approved

Sept. 2010

2010

Rapid Creek

Above Farmingdale to Cheyenne River

TSS

TMDL Approved

Sep. 2011

1998

Spring Creek

Headwaters to Sheridan Lake

E. coli

Not Initiated

 

2014

Spring Creek

Headwaters to Sheridan Lake

Fecal

TMDL Approved

Dec. 2008

2006

Spring Creek

Headwaters to Sheridan Lake

TSS

Not Initiated

 

2014

Victoria Creek

Near Rapid City

Temp

Not Initiated

 

2004

Grand River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Isabel, Lake

Dewey County

Mercury in Fish Tissue

Not Initiated

 

2004

Isabel, Lake

Dewey County

Chlorophyll-a

Not Initiated

 

2010

Pudwell Dam

Corson County

Mercury in Fish Tissue

Not Initiated  

2010

Shadehill Reservoir Perkins County Mercury in Fish Tissue TMDL Approved March 2016 2016

Shadehill Reservoir

Perkins County

Salinity/SAR

Not Initiated

 

2002

Streams

Bull Creek SF Grand to S15,T21N,R5E E. coli Not Initiated   2016

Bull Creek

SF Grand to S15,T21N,R5E

Salinity/SAR

Not Initiated

 

2012

Crooked Creek

ND Border to S34,T23N,R5E

Cond

Not Initiated

 

2014

Crooked Creek

ND Border to S34,T23N,R5E

Salinity/SAR

Not Initiated

 

2012

Grand River, N Fork

ND border to Shadehill Reservoir

Salinity/SAR

Not Initiated

 

2004

Grand River, S Fork S13, T18N, R3E to SD Hwy 79 E. coli Not Initiated   2016
Grand River, S Fork S13, T18N, R3E to SD Hwy 79 Fecal Not Initiated   2016

Grand River, S Fork

S13, T18N, R3E to SD Hwy 79

TSS

Not Initiated

 

2004

Grand River, S Fork

S13, T18N, R3E to SD Hwy 79

Salinity/SAR

Not Initiated

 

2006

Grand River, S Fork SD Hwy 79 to Shadehill Reservoir E. coli Not Initiated   2016

Grand River, S Fork

SD Hwy 79 to Shadehill Reservoir

Salinity/SAR

Not Initiated

 

2002

Grand River, S Fork

SD Hwy 79 to Shadehill Reservoir

TSS

Not Initiated

 

1998

Grand River

Shadehill Reservoir to Corson County line

Salinity/SAR

Not Initiated

 

1998

Grand River

Shadehill Reservoir to Corson County line

Temp

Not Initiated

 

1998

Grand River

Corson County line to Bullhead

E. coli

Not Initiated

 

2014

Grand River

Corson County line to Bullhead

Salinity/SAR

Not Initiated

 

2004

Grand River Corson County line to Bullhead TSS Not Initiated   2004

Grand River

Bullhead to mouth

E. coli

Not Initiated

 

2010

Grand River Bullhead to mouth Fecal Not Initiated   2004

Grand River

Bullhead to mouth

TSS

Not Initiated

 

2004

James River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Amsden Dam Day County Mercury in Fish Tissue TMDL Approved March 2016 2016

Bierman Dam

Spink County

Chlorophyll-a

Assessment Initiated

March 2015

2010

Lake Byron

Beadle County

Nutrients/Sed

Special Approvals

April 1999

Pre-1998

Lake Byron

Beadle County

pH

Not Initiated

 

2010

Lake Carthage

Miner County

Chlorophyll-a

Assessment Initiated

March 2017

2010

Lake Carthage Miner County Mercury in Fish Tissue TMDL Approved March 2016 2016
Cattail Lake Marshall County Mercury in Fish Tissue TMDL Approved March 2016 2016
Cavour Lake Beadle County Mercury in Fish Tissue TMDL Approved March 2016 2016
Clubhouse Lake Marshall County Mercury in Fish Tissue TMDL Approved Aug. 2016 2016
Cottonwood Lake Spink County Mercury in Fish Tissue TMDL Approved March 2016 2016

Cottonwood Lake

Spink County

TSI/pH

TMDL Approved

Nov. 2001

1998

Cresbard Lake

Faulk County

pH

Not Initiated

 

2010

Cresbard Lake

Faulk County

TSI/Chlorophyll-a

TMDL Approved

Dec. 2003

1998

Elm Lake

Brown County

Mercury in Fish Tissue

TMDL Approved

Mar. 2016

2014

Elm Lake

Brown County

TSI

TMDL Approved

April 1999

1998

Lake Faulkton

Faulk County

Mercury in Fish Tissue TMDL Approved March 2016 2016

Lake Faulkton

Faulk County

TSI/Sed/Chlorophyll-a

TMDL Approved

April 1999

1998

Four Mile Lake

Marshall County

pH

Not Initiated

 

2012

Lake Hanson Hanson County Mercury in Fish Tissue TMDL Approved March 2016 2016

Lake Hanson

Hanson County

TSI

TMDL Approved

June 2004

1998

Hazeldon Lake Day County Mercury in Fish Tissue TMDL Approved March 2016 2016
Henry Reservoir Bon Homme County Mercury in Fish Tissue TMDL Approved March 2016 2016
Horseshoe Lake Marshall County Mercury in Fish Tissue TMDL Approved March 2016 2016

Jones Lake

Hand County

pH

Not Initiated

 

2006

Jones Lake

Hand County

TSI

TMDL Approved

April 2003

1998

Lardy Lake

Day County

Mercury in Fish Tissue

TMDL Approved

March 2016

2014

Latham Lake

Faulk County

DO

Not Initiated

 

2012

Lily Lake Day County Mercury in Fish Tissue TMDL Approved March 2016 2016

Louise, Lake

Hand County

DO

Not Initiated

 

2014

Louise, Lake

Hand County

Mercury in Fish Tissue TMDL Approved March 2016 2016

Louise, Lake

Hand County

TSI

TMDL Approved

Nov. 2001

1998

Louise, Lake

Hand County

pH

Not Initiated

 

2008

Loyalton Lake - breached Edmunds County TSI TMDL Approved April 2003 1998
Lynn Lake Day County Mercury in Fish Tissue TMDL Approved March 2016 2016

Middle Lynn Lake

Day County

Mercury in Fish Tissue

TMDL Approved

March 2016

2014

Mina Lake

Edmunds County

DO

Not Initiated

 

2012

Mina Lake Edmunds County Mercury in Fish Tissue TMDL Approved March 2016 2016

Mina Lake

Edmunds County

TSI

TMDL Approved

April 2003

1998

Mitchell, Lake

Davison County

Chlorophyll-a/TP

TMDL Approved

April 1997

Pre-1998

Nine Mile Lake

Marshall County

Nutrients/Sed

TMDL Withdrawn

April 2010

1998

Nine Mile Lake

Marshall County

pH

Not Initiated

 

2010

Opitz Lake

Day County

Mercury in Fish Tissue

TMDL Approved

March 2016

2012

Pierpont Lake

Day County

Temp

Not Initiated

 

2012

Ravine Lake

Beadle County

DO

Not Initiated

 

2012

Ravine Lake

Beadle County

Mercury in Fish Tissue TMDL Approved March 2016 2016

Ravine Lake

Beadle County

TSI/Fecal

TMDL Approved

April 1999

1998

Redfield, Lake

Spink County

DO

Not Initiated

 

2014

Redfield, Lake

Spink County

Nutrients/Sed/TSI

TMDL Approved

April 1999

1998

Reetz Lake Day County Mercury in Fish Tissue TMDL Approved March 2016 2016
Richmond Lake Brown County Mercury in Fish Tissue TMDL Approved March 2016 2016

Richmond Lake

Brown County

TSI

TMDL Approved

Aug. 2007

1998

Rosehill Lake - breached Hand County TSI TMDL Approved April 2003 1998

Rosette Lake

Edmunds County

Chlorophyll-a

Assessment Initiated

March 2015

2014

South Buffalo Lake

Marshall County

DO

Not Initiated

 

2010

South Buffalo Lake

Marshall County

Mercury in Fish Tissue TMDL Approved March 2016 2016

South Red Iron Lake

Marshall County

Temp

Not Initiated

 

2014

Staum Dam Beadle County Mercury in Fish Tissue TMDL Approved March 2016 2016
Twin Lakes Sanborn County DO Assessment Initiated March 2017 2016

Twin Lakes

Sanborn County

Chlorophyll-a

Assessment Initiated

March 2017

2010

Wilmarth Lake

Aurora County

Mercury in Fish Tissue TMDL Approved March 2016 2016

Wilmarth Lake

Aurora County

pH

Not Initiated

 

2014

Streams

Dawson Creek

James River to Lake Henry

E. coli

TMDL Approved

June 2011

2010

Dawson Creek James River to Lake Henry Fecal TMDL Approved June 2011 2010

Firesteel Creek

West Fork Firesteel Creek to mouth

E. coli

Not Initiated

 

2010

Firesteel Creek

West Fork Firesteel Creek to mouth

Nutrients

Special Approvals

April 1997

Pre 1998

Firesteel Creek West Fork Firesteel Creek to mouth Temp Not Initiated   2016
Firesteel Creek West Fork Firesteel Creek to mouth TDS Not Initiated   2016

Foot Creek

Near Aberdeen

DO

Not Initiated

 

2012

James River North Dakota border to Mud Lake Reservoir DO Assessment Initiated   2012

James River

Columbia Road Reservoir

DO

Assessment Initiated

Oct. 2005

2012

James River Columbia Road Reservoir TSS Not Initiated   2016

James River

Columbia Road Reservoir to near US HWY 12

DO

Assessment Initiated

Oct. 2005

2012

James River Columbia Road Reservoir to near US HWY 12 TSS Not Initiated   2016

James River

US HWY 12 to Mud Creek

DO

Assessment Initiated

Oct. 2005

2012

James River

Mud Creek to James River Diversion Dam

DO

Assessment Initiated

Oct. 2005

2010

James River

James River Diversion Dam to Huron 3rd St Dam

DO

Assessment Initiated

Oct. 2005

2012

James River

James River Diversion Dam to Huron 3rd St Dam

TDS

Not Initiated

 

2014

James River

Huron 3rd Street Dam to Sand Creek

Mercury in Fish Tissue TMDL Approved March 2016 2016

James River

Sand Creek to I-90

TSS

Assessment Initiated

Oct. 2005

2002

James River Yankton County line to mouth E. coli Not Initiated   2016

James River

Yankton County line to mouth

Fecal

TMDL Approved

March 2011

2002

James River

Yankton County line to mouth

TSS

Assessment Initiated

Oct. 2005

2002

Moccasin Creek

James River to S24, T123N, R64W

DO

Assessment Initiated

Oct. 2005

2008

Mud Creek

SD Highway 73 to mouth

DO

Not Initiated

 

2006

Pierre Creek

James River to S11, T102N, R58W

E. coli

TMDL Approved

Dec. 2011

2010

Pierre Creek

James River to S11, T102N, R58W

Fecal

TMDL Approved

Sept. 2009

2008

Snake Creek

Headwaters to mouth

DO

Not Initiated

 

2006

Wolf Creek

Wolf Creek Colony to S5, T103N, R56W

E. Coli

TMDL Public Noticed

June 2012

2008

Wolf Creek Wolf Creek Colony to S5, T103N, R56W Fecal Not Initiated   2016

Wolf Creek

Just above Wolf Creek Colony to mouth

E. Coli

TMDL Public Noticed

June 2012

2008

Wolf Creek

Just above Wolf Creek Colony to mouth

Fecal

Not Initiated

 

2014

Wolf Creek

Just above Wolf Creek Colony to mouth

TSS

TMDL Approved

Aug. 2011

2008

Little Missouri River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Streams

Little Missouri River

Montana border to North Dakota border

Mercury in Fish Tissue TMDL Approved March 2016 2016

Little Missouri River

Montana border to North Dakota border

TSS

Assessment Initiated

April 2012

2010

Minnesota River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Alice, Lake

Deuel County

Mercury in Fish Tissue TMDL Approved March 2016 2016

Alice, Lake

Deuel County

TSI

TMDL Approved

June 2004

1998

Big Stone Lake

Roberts County

Temp

Not Initiated

 

2012

Big Stone Lake Roberts County Nutrients TMDL Approved Dec. 1998 Pre 1998

Fish Lake

Deuel County

TSI

TMDL Approved

Sept. 2004

1998

Hendricks, Lake

Brookings County

pH

Not Initiated

 

2010

Hendricks, Lake

Brookings County

TSI/Sed

TMDL Approved

April 1999

1998

Oliver, Lake

Deuel County

TSI

TMDL Approved

Nov. 2001

1998

Punished Woman Lake

Codington County

pH

Not Initiated

 

2012

Punished Woman Lake

Codington County

TSI/Sed

TMDL Approved

Feb. 2001

1998

Summit Lake Grant County Mercury in Fish Tissue TMDL Approved March 2016 2016

Streams

La Qui Parle River, West Branch SD/MN border to S8, T115N, R47W E. coli Not Initiated   2016

Little Minnesota River

S24, T126N, R51W to S15, T128N, R52W

DO

Not Initiated

 

2012

Mud Creek

S. Fork Yellowbank to S22,T118N,R48W

DO

Not Initiated

 

2012

Whetstone River, S. Fork

Headwaters to Lake Farley

E. coli

Assessment Initiated

Feb. 2010

2012

Whetstone River, S. Fork

Lake Farley to mouth

E. coli

Assessment Initiated

Feb. 2010

2012

Yellowbank River, S. Fork

SD/MN border to S33, T118N, R49W

E. coli

TMDL Public Noticed

July 2012

2012

Yellowbank River, N. Fork

SD/MN border to S33, T118N, R49W

E. coli

TMDL Public Noticed

July 2012

2012

Missouri River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Lake Andes

Charles Mix County

DO

TMDL Withdrawn

March 2010

2008

Brakke Dam

Lyman County

Mercury in Fish Tissue TMDL Approved March 2016 2016

Brakke Dam

Lyman County

TSI/Chlorophyll-a

TMDL Approved

Sept. 2004

1998

Burke Lake

Gregory County

DO/pH/TSI/Chlorophyll-a

TMDL Approved

Aug. 2007

2006

Lake Byre

Lyman County

TSI/Chlorophyll-a

TMDL Approved

June 2004

Not Listed

Lake Campbell

Campbell County

pH

Assessment Initiated

Aug. 2006

2010

Lake Campbell

Campbell County

Chlorophyll-a

Assessment Initiated

Aug. 2006

2010

Corsica Lake Douglas County pH Not Initiated   2008

Corsica Lake

Douglas County

TSI/Chlorophyll-a

TMDL Approved

Aug. 2006

1998

Cottonwood Lake

Sully County

Chlorophyll-a

Not Initiated

 

2010

Cottonwood Lake

Sully County

Mercury in Fish Tissue TMDL Approved March 2016 2016

Dante Lake

Charles Mix County

Temp

Not Initiated

 

2014

Dante Lake

Charles Mix County

TSI/DO

TMDL Approved

Sept. 2006

1998

Fate Dam

Lyman County

Mercury in Fish Tissue TMDL Approved March 2016 2016

Fate Dam

Lyman County

TSI

TMDL Approved

Jan. 2005

1998

Geddes Lake

Charles Mix County

TSI/Chlorophyll-a/DO

TMDL Approved

May 2008

1998

Lake Hiddenwood

Walworth County

DO

Not Initiated

 

2012

Lake Hiddenwood

Walworth County

TSI/Sed/Chlorophyll-a

TMDL Approved

April 1999

1998

Hurley Lake

Potter County

Mercury in Fish Tissue

TMDL Approved

March 2016

2004

McCook Lake

Union County

Sed

TMDL Approved

April 1999

1998

McCook Lake

Union County

Temp

Not Initiated

 

2010

Lake Pocasse

Campbell County

Chlorophyll-a

Not Initiated

 

2010

Roosevelt Lake

Tripp County

Mercury in Fish Tissue

TMDL Approved

March 2016

1998

Streams

Choteau Creek

Wagner to mouth

TSS

TMDL Approved

May 2010

2004

Crow Creek Bedashosha Lake to Jerauld County line E. coli Not Initiated   2016
Crow Creek Bedashosha Lake to Jerauld County line TSS Not Initiated   2016

Emanuel Creek

Lewis and Clark Lake to S20, T94N, R60W

E. coli

TMDL Approved

Aug. 2011

2010

Emanuel Creek

Lewis and Clark Lake to S20, T94N, R60W

Fecal

TMDL Approved

Sept. 2009

2008

Emanuel Creek

Lewis and Clark Lake to S20, T94N, R60W

TSS

TMDL Approved

Sept. 2009

2008

Medicine Creek US Hwy 83 to mouth E. coli Not Initiated   2016

Medicine Creek

US Hwy 83 to mouth

Fecal/TSS

TMDL Approved

Aug. 2006

2006

Medicine Creek US Hwy 83 to mouth Cond Not Initiated   2004
Missouri River (Lewis & Clark Lake) Fort Randall Dam to North Sioux City Mercury in Fish Tissue Not Initiated   2016
Missouri River (Lake Oahe) ND border to Oahe Dam Mercury in Fish Tissue TMDL Approved March 2016 2016

Missouri River (Lake Sharpe)

Oahe Dam to Big Bend Dam

DO Not Initiated    
Missouri River (Lake Sharpe) Oahe Dam to Big Bend Dam Sed TMDL Approved Feb 2001 1998

Missouri River (Lake Sharpe)

Oahe Dam to Big Bend Dam

Temp

Not Initiated

 

2010

Ponca Creek Gregory to near St. Charles E. coli Not Initiated   2016

Ponca Creek

Gregory to near St. Charles

Fecal

TMDL Approved

August 2010

2008

Ponca Creek

Gregory to near St. Charles

TSS

TMDL Approved

April 2010

2008

Spring Creek

US Hwy 83 to mouth

DO

Not Initiated

 

2006

Moreau River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Coal Springs Reservoir

Perkins County

Mercury in Fish Tissue

TMDL Approved

Mar. 2016

2012

Coal Springs Reservoir

Perkins County

pH

Not Initiated

 

2012

Little Moreau Lake #1 Dewey County Mercury in Fish Tissue TMDL Approved March 2016 2016

Streams

Moreau River North and South Forks to Ziebach/Perkins county line E. coli Not Initiated   2016

Moreau River

North and South Forks to Ziebach/Perkins county line

Salinity/SAR

Not Initiated

 

2004

Moreau River

North and South Forks to Ziebach/Perkins county line

TSS

Not Initiated

 

2006

Moreau River Ziebach/Perkins county line to Green Grass Salinity/SAR Not Initiated   2006
Moreau River Ziebach/Perkins county line to Green Grass TSS Not Initiated   2004

Moreau River

Green Grass to mouth

E. coli

Not Initiated

 

2010

Moreau River

Green Grass to mouth

Fecal

Not Initiated

 

2006

Moreau River

Green Grass to mouth

TSS

Not Initiated

 

1998

Moreau River, S. Fork

Alkali Creek to mouth

Cond

Not Initiated

 

 

Moreau River, S. Fork

Alkali Creek to mouth

Salinity/SAR Not Initiated   2014

Moreau River, S. Fork

Alkali Creek to mouth

TDS

Not Initiated

 

2004

Niobrara River

Lakes

Rahn Lake

Tripp County

Chlorophyll-a

Not Initiated

 

2010

Streams

Keya Paha River

Keya Paha to Nebraska border

E. coli

TMDL Approved

Sept. 2011

2010

Keya Paha River

Keya Paha to Nebraska border

Fecal

TMDL Approved

Feb. 2010

2008

Keya Paha River

Keya Paha to Nebraska border

TSS

TMDL Approved

Sept. 2009

1998

Red River

Lakes

White Lake

Marshall County

DO/TSI/Chlorophyll-a

TMDL Approved

Aug. 2006

1998

Vermillion River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

East Vermillion Lake

McCook County

Chlorophyll-a

Not Initiated

 

2010

East Vermillion Lake

McCook County

Mercury in Fish Tissue TMDL Approved March 2016 2016

East Vermillion Lake

McCook County

Temp Not Initiated   2012
Lake Henry Kingsbury County Mercury in Fish Tissue TMDL Approved March 2016 2016

Silver Lake

Hutchinson County

pH

Not Initiated

 

2010

Swan Lake

Turner County

TSI/Sed

TMDL Approved

April 1999

1998

Lake Thompson Kingsbury County Chlorophyll-a Assessment Initiated March 2017 2014
Lake Thompson Kingsbury County Mercury in Fish Tissue TMDL Approved March 2016 2016
Whitewood Lake Kingsbury County Mercury in Fish Tissue TMDL Approved March 2016 2016

Streams

Long Creek

Vermillion River to Highway 44

E. coli

TMDL Public Noticed

March 2013

2010

Long Creek

Vermillion River to Highway 44

Fecal

TMDL Public Noticed

March 2013

1998

Turkey Ridge Creek

Vermillion River to S31, T98N, R53W

Fecal

TMDL Approved

Sept. 2006

Not listed

Vermillion River

Turkey Ridge Creek to Baptist Creek

TSS

TMDL Approved

Sept. 2010

2002

Vermillion River Baptist Creek to mouth E. coli Not Initiated   2014

Vermillion River

Baptist Creek to mouth

TSS

TMDL Approved

July 2011

1998

Vermillion River, E Fork

McCook/Lake County line to Little Vermillion River

E. coli

Not Initiated

 

2010

Vermillion River, E Fork

McCook/Lake County line to Little Vermillion River

Fecal

TMDL Approved

Sept. 2012

2010

Vermillion River, W Fork

Vermillion River to McCook/Miner County line

E. coli/Fecal

TMDL Public Noticed

June 2012

2010

White River

Segment or
Lake Name

Segment or
Lake Location

Impairment

Status

Status Date

Initial
Listing

Lakes

Allan Dam

Bennett County

pH

Not Initiated

 

2014

Streams

Cottonwood Creek Headwaters to White River Cond Not Initiated   2004

Little White River

Rosebud Creek to mouth

E. coli

Not Initiated

 

2012

Little White River

Rosebud Creek to mouth

Fecal

Not Initiated

 

2010

White River

Wilow Creek to Pass Creek

E. coli

Not Initiated

 

2010

White River

Wilow Creek to Pass Creek

Fecal

Not Initiated

 

2004

White River

Wilow Creek to Pass Creek

Salinity/SAR

Not Initiated

 

2010

White River

Pass Creek to Little White River

E. coli

Not Initiated

 

2012

White River

Pass Creek to Little White River

Fecal

Not Initiated

 

2004

White River

Pass Creek to Little White River

Salinity/SAR

Not Initiated

 

2010

White River Pass Creek to Little White River TSS Not Initiated   2004

White River

Little White River to confluence with Missouri River

E. coli

Not Initiated

 

2010

White River

Little White River to confluence with Missouri River

Fecal

Not Initiated

 

2004

Impairments
Alkalinity
Alkalinity is a measure of the buffering capacity of water, or the capacity of water to resist change in pH.
Cd
Cadmium, a metal that in high enough quantities can cause stress and/or be fatal to aquatic life.
Chlorides
Chloride can be toxic to aquatic organisms and can affect the taste of food products.
Chlorophyll-a

Chlorophyll-a is a major pigment in algae that may be used to estimate the biomass of algae found in water.

Cond
Conductivity, a measure of the waters ability to conduct a current. It is used as a measure if the dissolved ionic matter in the water.
Cu
Copper, a metal that in high enough quantities can cause stress and/or be fatal to aquatic life.
DO
Dissolved Oxygen, Results from the photosynthetic and respiratory activities of the biota in the waterbody. DO is essential for aquatic life.
E. Coli
Escherichia coli (E. coli), is an indicator of waste from warm-blooded animals. Fecal coliform may also indicate the potential for pathogens in the water supply.
Fecal
Fecal Coliform, is an indicator of waste from warm-blooded animals. Fecal coliform may also indicate the potential for pathogens in the water supply.
Fish Kill
A waterbody that has had a reported fish kill.
Mercury in Fish Tissue
Mercury is a neurotoxin that can bioaccumulate in the tissue of fish and pose a risk when consumed by humans.
Nitrate
Inorganic form of oxidized nitrogen resulting from bacterial oxidation of ammonia.
Nutrients
Nutrients are ultimately responsible for the eutrophication or productivity of a waterbody. Typical nutrients measured are total nitrogen and total phosphorus.
pH
Acidity/Alkalinity the measure of the hydrogen ion concentration. pH can effect many chemical reactions in water.
Salinity/SAR
Salinity/Sodium Absorption Ratio, high concentration of sodium can render in the soil hard and resistant to water penetration and also limit the uptake of water by plant roots.
Sediment
Sediment refers to excessive sediment that caused the reduction of depth in a lake or reservoir.
Selenium
Selenium is an essential trace element for animal nutrition. It can also be toxic to plants, animals and humans at higher concentrations.
Sulfates
Sulfur is an important plant nutrient. Sulfates can cause gastrointestinal problems to humans at high enough concentrations.
TDS
Total Dissolved Solids, material that can pass through a filter and is typically Total Dissolved Solids, Is a measure of salts in water, and can be composed of earth compounds, particularly bicarbonates, carbonates, sulfates and chloride.
Temp
Temperature, Water temperature is important for aquatic life and chemical processes in water.
Total Ammonia

Total ammonia, in high concentrations, is toxic to aquatic organisms, including invertebrates and fish.

TP
Total phosphorus (see nutrients)
TSI
Carlson's (1977) Trophic State Indices, Carlson's TSI is a measure of productivity in a lake or reservoir. Typically Secchi depth, chlorophyll a, and phosphorus measurements are used to calculate a mean TSI value.
TSS
Total Suspended Solids, the organic and inorganic material left on a standard glass fiber filter (0.45 micron) after a water sample is filtered through it. TSS can be used to measure the volume of solids in a waterbody. Too much suspended solids can be harmful to the biota in a stream.
Unknown
The cause of the impairment to the biological component of the narrative standard is not known and further study is needed.
Zinc
Zinc, in high enough concentrations, can be toxic to aquatic organisms.
 

TMDL Project Status

Assessment Initiated
Data for developing the TMDL is being collected.
Delist
A waterbody has been removed from the TMDL list. Delisting may occur when a TMDL is approved by EPA, water quality standards are met, a waterbody was listed in error, additional state effluent controls address water quality problems, reservoirs have been breached and are no longer a viable waterbody, or data assessment methodologies have been modified.
Delist*
Water quality standards have been met; however, a TMDL was completed because an assessment had already been initiated while the segment was previously listed.
Not Initiated
Projects are proposed and waiting final funding to begin assessment.
Special Approvals
A waterbody that had sufficient data to write a TMDL before the first 303(d) list was published.
TMDL in Public Notice
During the public notice phase, a TMDL has been developed and is ready for public review and comment. Comments can be sent to denrinternet@state.sd.us. Comments received are reviewed and considered before submitting a final TMDL to EPA for approval.
TMDL Public Noticed
The public notice comment period has passed. Comments received are being reviewed and considered before submitting a final TMDL to EPA for approval.
TMDL Approved
EPA has approved a TMDL as submitted by the state.
TMDL Not Required
Waterbody is meeting its beneficial uses.
TMDL Withdrawn
The formal withdrawal of a TMDL because of, but not limited to, new water quality data, revisions in water quality standards, or changes in assessment or Integrated Report listing methodologies.

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