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EPA Approved TMDLs - Big Sioux River Watershed
Central Big Sioux River Watershed TMDL Approval Letter (click here)
Approved TMDLs
Detailed listing of the 12 Pollutant TMDLs that have been completed (click here)


* BSR from I-29 to Near Dell Rapids Segment (TSS)
* BSR from Near Dell Rapids to Below Baltic (Fecal Coliform)
* Beaver Creek from Split Rock Creek to SD-MN Border (TSS & Fecal Coliform)
* Flandreau Creek from BSR to MN border (Fecal Coliform)
* Jack Moore Creek (Fecal Coliform)
* North Deer Creek from near Bruce to near Brookings (Fecal Coliform)
* Pipestone Creek from Split Rock Creek to MN Border (Fecal Coliform)
* Skunk Creek from Brant Lake to mouth (Fecal Coliform)
* Split Rock Creek (TSS & Fecal Coliform)
* Spring Creek (Fecal Coliform)

For the detailed report and TMDL reports
click here

North-Central Big Sioux River Watershed TMDL Approval Letter (click here)
Approved TMDLs
Detailed listing of the 4 Pollutant TMDLs that have been completed (click here)

* BSR from Willow Creek to Stray Horse Creek (Fecal Coliform)
* Willow Creek (Fecal Coliform)
* Stray Horse Creek (Fecal Coliform)
* Hidewood Creek (Fecal Coliform)

For the detailed report and TMDL reports
click here
Oakwood Lakes Watershed TMDL Approval Letter (click here)
Approved TMDLs
Detailed listing of the 2 Pollutant TMDLs that have been completed

* East Oakwood Lake (Phosphorus (TSI) & pH impairment)
* West Oakwood Lake (Phosphorus (TSI)

For the detailed report and TMDL reports
click here
Other Recently Approved TMDLs in the Big Sioux River Watershed
* Peg Munky Run (Fecal Coliform impairment) click here
* Bachelor Creek (Ammonia impairment) click here
* Bachelor Creek Implementation Report click here