Long Creek IA 05-GRA-1364

Assessment Comments

Assessment based on results of IDNR/UHL biological (biocriteria) monitoring in 2001: Fish IBI= 38 (fair), BM-IBI= 48 (fair).

Basis for Assessment

SUMMARY:  The Class B(LR) aquatic life uses are assessed (monitored) as "fully supported / threatened" (minor impacts)  based on results of IDNR/UHL biological (biocriteria) sampling in 2001.   This is the same assessment as that developed for the 2002 reporting cycle.

EXPLANATION:  This assessment was based on data collected in 2001 as part of the DNR/UHL stream biocriteria project.  The 2001 Fish IBI score was 38 (fair) and the BM-IBI score was 48 (fair).  The aquatic life use support was assessed as fully supported / threatened (=FST), based on a comparison of the F-IBI and BM-IBI scores with biological assessment criteria established specifically for the 2002 Section 305(b) report.  The biological assessment criteria were determined from a statistical analysis of data collected at stream ecoregion reference sites from 1994-2001.