Assessment Comments
Assessment is based on results of IDNR/UHL biological (biocriteria) monitoring in 2000: FIBI = 27 (fair); BMIBI = 53 (good). Non-riffle FIBI BIC = 32, BMIBI BIC = 62.
Basis for Assessment
SUMMARY: The Class B(LR) aquatic life uses are assessed (monitored) as "partially supported" based on results of IDNR/UHL biological (biocriteria) sampling in 2000. This is the same assessment as that developed for the 2004 reporting cycle.
EXPLANATION: The assessment was based on data collected in 2000 as part of the IDNR/UHL stream biocriteria project. The 2000 FIBI score was 27 (fair) and the BMIBI score was 53 (fair). The aquatic life use support assessment was assessed as partially supporting (= PS), based on a comparison of the FIBI and BMIBI scores with biological impairment criteria (BIC) established for previous Section 305(b) reports. The biological impairment criteria were determined from a statistical analysis of data collected at stream ecoregion reference sites from 1994-2004. The non-riffle site FIBI BIC for this ecoregion is 32 and the BMIBI BIC for this ecoregion is 62.
