Arkansas TMDLs

Water Division - Water Quality Planning Branch

Sarah Clem, Branch Manager - (501) 682-0660

For waters that are not meeting water quality standards or have a significant potential not to meet standards as a result of point source discharges or nonpoint source activities, TMDLs are developed which establish the maximum amount of a pollutant that can enter a specific water body without violating the water quality standards. The values are normally calculated amounts based on dilution and the assimilative capacity of the water body. Calculations are performed by various models that predict safe levels of contaminants based on worst-case conditions and providing a margin of safety. The calculated safe amounts then may be allocated to point source discharges as a wasteload allocation and to nonpoint sources as a local allocation. This constitutes a TMDL.

Completed TMDLs

• TMDLs for the Tailwaters of the White River Norfork and Bull Shoals Dams. May 1, 2009 (PDF File)
• TMDLs for Turbidity for and Fecal Coliforms for L’Anguille River, AR. October 2001 (PDF File)
  
• TMDLs for Segments Listed for Mercury in Fish Tissue for the Ouachita River Basin, and Bayou Bartholomew, Arkansas and Louisiana to Columbia. May 30, 2002 (PDF File)
  
• TMDLs for Segments Listed for Mercury in Fish Tissue for Selected Arkansas Watersheds. September 17, 2002 (PDF File)
  
• TMDLs for Chloride, Sulfate, TDS, and Ammonia in the ELCC Tributary, AR (Reach 08040201-606) October 3, 2002 (PDF File)
• TMDLs for Turbidity for Bayou Bartholomew, AR. October 8, 2002 (PDF File)
• TMDLs for Chloride, Sulfate, TDS in Flat Creek and Salt Creek, AR (Reaches 08040201-706 and 806). October 8, 2003 (PDF File)
• Ammonia and Nitrate TMDLs for Stone Creek Watershed. November 03 (PDF File)
• Whig Creek Basin TMDL for Copper. November 03 (PDF File)
• TMDLs for Lakes Listed for Mercury in Fish Tissue for the Ouachita River Basin, AR. November 20, 2003 (PDF File)
• TMDL for Turbidity for Tyronza River, AR. January 6, 2005 (PDF File)
• TMDLs for Chloride, Sulfate, TDS in the Boeuf River Bayou Macon Basins, AR. March 3, 2005 (PDF File)
• TMDL for Turbidity for Ten Mile Creek, AR. December 22, 2005 (PDF File)
• TMDL for Nitrate for Days Creek, AR (Reach 11140302-003). December 23, 2005 (PDF File)
• TMDLs for Turbidity for the Poteau River near Fort Smith, AR. December 29, 2005 (PDF File)
• TMDLs for Turbidity for Cadron Creek, AR. January 5, 2006  (PDF File)
• TMDL for Turbidity in the Strawberry River Basin, AR. January 5, 2006  (PDF File)
• TMDLs for Turbidity for White River and West Fork White River, AR. January 5, 2006  (PDF File)
• TMDL for Turbidity for Bayou Deview and Cache River, AR. January 6, 2006  (PDF File)
• TMDLs for Turbidity for Village Creek, AR. January 5, 2006 (PDF File)
• TMDL for Turbidity for Wabbaseka Bayou, AR. January 5, 2006 (PDF File)
• TMDL for Turbidity for White Oak Creek, AR. January 5, 2006 (PDF File)
• TMDLs for Nitrate and Phosphorus in Rolling Fork (Reach 11140109-919). January 10, 2006 (PDF File)
• TMDLs for Phosphorus, Copper, and Zinc for the Poteau River Near Waldron, AR (Reach 11110105-031L). January 10, 2006 (PDF File)
• TMDL for Phosphorus in Osage Creek neat Berryville, AR (Reach 11010001-045L). January 10, 2006 (PDF File)
• Mercury TMDL for Spring Lake in Yell County, AR. January 16, 2007 (PDF File)
• Nutrient TMDLs for Six Arkansas Lakes. January 16, 2007 (PDF File)
• TMDL for Dissolved Oxygen for Big Creek near Sheridan, AR (Reach 08040203-904). January 16, 2007 (PDF File)
• TMDL for Turbidity for Lake Frierson, AR. January 16, 2007 (PDF File)
• Pathogen TMDLs for Selected Reaches in Planning Segment 1C. January 7, 2008 (PDF File)
• TMDL for Mulberry River, AR. August 1, 2008 (PDF File)

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