Total Maximum Daily Load for Siltation, Upper Pine Lake, Hardin County Iowa, December 2002

(2002) Total Maximum Daily Load for Siltation, Upper Pine Lake, Hardin County Iowa, December 2002. Natural Resources, Department of

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Abstract

The Federal Clean Water Act requires the development of a total maximum daily load (TMDL) for the pollutant(s) that causes a water body to be placed on the State of Iowa impaired waters list [303(d) list]. Upper Pine Lake is on the 1998 list because of an assessment that the lake only partially supports its aquatic life use as a consequence of siltation. The 1998 assessment report reiterates the 1994 and 1996 lake evaluations, the primary cause of impaired water quality is the high rate of siltation. This document consists of a single TMDL for siltation intended to provide water quality in Upper Pine Lake that fully supports its designated uses. Specifically, sediment delivery reduction has been targeted to address the siltation impairment.