||TMDLs for Turbidity for Cadron Creek, AR.
||FTN Associates, Little Rock, AR.; Environmental Protection Agency, Dallas, TX. Region VI.
Water quality standards ;
Water pollution ;
Clean water act ;
Dissolved oxygen ;
Nonpoint sources ;
Point sources ;
State regulations ;
Total maximum daily loads(TMDLs) ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
Section 303(d) of the Federal Clean Water Act requires states to identify waterbodies that are not meeting water quality standards and to develop total maximum daily pollutant loads for those waterbodies. A total maximum daily load (TMDL) is the amount of a pollutant that a waterbody can assimilate without exceeding the established water quality standards for that pollutant. Through a TMDL, pollutant loads can be allocated to point sources and nonpoint sources discharging to the waterbody. The study area for this project is located in the Cadron Creek watershed in central Arkansas. The study area is part of the Arkansas Department of Environmental Quality (ADEQ) Planning Segment 3D and is located within the Arkansas River Valley ecoregion. Land use in the study area is about 54% pasture and 40% forest. Two reaches in the Cadron Creek watershed are included on the draft 2004 Arkansas 303(d) list as not supporting the aquatic life use due to exceedances of numeric criteria for turbidity. The applicable numeric criteria for turbidity for these reaches are 21 NTU (primary value) and 40 NTU (storm-flow value).