Middle Fork South Beaver Creek IA 02-CED-563

Assessment Comments

Assessment is based on (1) 2001 Biocriteria: Fish IBI= 65(good), 46(fair); BM-IBI= 36(fair),30(poor) and (2) results of IDNR/UHL monitoring in support of TMDL development. See attached document for details.

Basis for Assessment

The general (aquatic life) uses remain assessed as "partially supported."  EXPLANATION:  The previous assessment of support for the general beneficial uses of this stream ("partially supported") was based on the occurrence of repeated fish kills from 1991 to 1997 (see assessment developed for the 1998 report above).   The most recent kill occurred in September 1997.   According to DNR's assessment methodology for Section 305(b) reporting, occurrence of a single pollution-caused fish kill within the most recent three-year period (1997-1999) indicates that the aquatic life uses of a waterbody are only "partially supported."  Thus, the general aquatic life uses were assessed as "partially supported."