Assessment Comments
Assessment is based on results of IDNR/UHL biological (biocriteria) monitoring in 2000: FIBI = 15 (poor); BMIBI = 56 (good) and on 2000 Fisheries data: FIBI = 51 (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 2002 reporting cycle.
EXPLANATION: The assessment was based on data collected in 2000 at the Michaelson Marsh Area (Kossuth Co.) as part of the DNR/UHL stream biocriteria project. The 2000 FIBI score was 15 (poor) and the BMIBI score was 56 (good). The aquatic life use support 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 FIBI BIC for this ecoregion is 32 and the BMIBI BIC for this ecoregion is 62.
The assessment was partially based on data collected in 2000 as part of a DNR Fisheries stream sampling project: Manchester research station. The 2000 evaluated FIBI was 51 (good). The aquatic life use support was assessed (evaluated) as Fully Supporting (= FS), based on a comparison of the FIBI score 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 FIBI BIC for this ecoregion is 32.
