Assessment Comments
Assessment is based on results of IDNR/UHL monthly ambient monitoring near Turin in 1999 and 2000. (Note: the monitoring station near Turn (STORET station 10670001) was removed from the IDNR/UHL ambient network in September 2000.)
Basis for Assessment
SUMMARY: The Class B(WW) aquatic life uses remain assessed (monitored) as "fully supported / threatened" (minor impacts) based on result of chemcial/physical water quality monitoring in 1999 and 2000. Fish consumption uses remain "not assessed" due to the lack of fish contaminant monitoring in this river segment. This assessment is based on results of IDNR/UHL monthly ambient monitoring conducted during the 2000-2001 biennial period south of Turin in Monona Co. (STORET station 10670001 (formerly station 911090)). This is the same assessment as that developed for the 2002 reporting cycle. Note: The IDNR/UHL ambient monitoring station south of Turin was dropped from the IDNR monitoring network after September 2000.
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" (minor impacts).
Fish consumption uses remain "not assessed" due to the lack of recent fish contaminant monitoring in this river segment.
