Buck Creek IA 01-MAQ-45

Assessment Comments

1991 stream use assessment in Delaware County.

Basis for Assessment

Used the assessment of support of the Class B(LR) aquatic life uses developed for the 1996 report (FST).  Additional monitoring is needed to update and better determine the status of habitat and the aquatic communities.   Because data are > five years old, the 305(b) assessment category was changed to "evaluated."  A review of the field sheet from the September 1991 DNR stream use assessment in Delaware County shows very low fish community diversity (4 species from 2 families) for streams in the Iowan Surface subecoregion (47c) and presence of only 3 of the expected 11 fish taxa for streams in the subregion.   Although these results suggest an impairment, continue to use the FST assessment due to notes on field sheet regarding rocky substrates and difficulty seining.