The South Dakota Department of Environment and Natural Resources (DENR) has submitted its 2012 Integrated Report for Surface Water Quality Assessment to the U.S. Environmental Protection Agency (EPA). The biennial report, required under the federal Clean Water Act, was due to EPA by April 1. The Integrated Report contains an assessment of the surface water quality of South Dakota’s waters, a description of South Dakota’s water quality monitoring programs, pollutants causing impairments of the water bodies, and identification of waters targeted for total maximum daily load development. A total maximum daily load is a determination of the amount of pollution a waterbody can receive and still maintain water quality standards.
The 2012 report lists 155 waterbodies or waterbody segments needing a total maximum daily load. Of those listed, 92 (or 59%) are stream and river segments and 63 (or 41%) are lakes that occasionally violate water quality standards. Since the last biennial report in 2010, 69 total maximum daily loads have been completed or determined to be unnecessary, 79 are in progress, and 84 are planned.
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