Assessment Comments
Assessment is based on (1) 1999 summary of trout reproduction in Iowa streams and (2) results of 1995 biocriteria sampling: habscr/fshscr = 25/12 (shock).
Basis for Assessment
SUMMARY: The Class B(CW) coldwater aquatic life uses were assessed as "fully supported / threatened." Fish consumption uses remain "not assessed." EXPLANATION: The previous assessment of support of the Class B(CW) uses was based on results of a DNR biocriteria sampling 1995 (see assessment for the 1998 report above). Based, however, on a summary of trout reproduction in Iowa streams prepared by the DNR Fisheries Bureau, these Class B(CW) uses were assessed as "fully supported / threatened." According to Moeller (1999), this reach of Burr Oak Creek is in the category of Iowa trout streams that have at least some documented natural reproduction but that are generally unable to maintain a viable trout population at this time. Thus, the assessment of support of the Class B(CW) aquatic life uses was changed from "fully supporting" to "fully supporting / threatened." Fish consumption uses remain "not assessed" due to lack of recent fish tissue monitoring in this stream reach.
