Assessment Comments
Assessment is based on results of IDNR monthly ambient monitoring near Turin in 1999 and 2000.
Basis for Assessment
SUMMARY: The Class B(WW) aquatic life uses are assessed as "fully supported / threatened." Fish consumption uses remain "not assessed." This assessment is based on results of IDNR monthly ambient monitoring conducted during the 2000-2001 biennial period south of Turin in Monona Co. (station 10670001 (formerly station 911090)). EXPLANATION: Monitoring at the IDNR station near Turin showed no violations of Class B(WW) water quality criteria in the 12 samples collected during the 2000-2001 biennial period for dissolved oxygen (minimum value = 7.3 mg/l), pH (range = 8.1 to 8.4 units), or ammonia-nitrogen (maximum value = 0.20). Levels of toxic metals in the four samples analyzed, and levels of pesticides in the two samples analyzed, were all below the analytical level of detection. Although these results suggest "full support" of the Class B(WW) aquatic life uses, the extensive habitat alterations in this stream system suggest at least a threat to full support of the aquatic life uses. Thus, these uses were assessed as "fully supported / threatened" (no declining trend) for the 2002 report. Fish consumption uses remain "not assessed" due to the lack of recent fish contaminant monitoring in this river reach.
