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