Buck Run IA 04-RAC-1177

Assessment Comments

Stream use assessment.

Basis for Assessment

Used a review of the field sheet from the July 1992 DNR stream use assessment to continue to assess support of the Class B(LR) aquatic life uses as PS due to (1) relatively low diversity of the fish community (6 species from 1 family) for streams in the Des Moines Lobe subecoregion (47b), (2) presence of less than a majority (5 of 11) of the expected fish taxa for streams in this subecoregion, and (3) indications on the field sheet of frequent impacts from overpasturing of the riparian area and stream bank erosion.  Field sheet notes that sampling was hindered by rocky substrates.   Follow-up monitoring is needed to better determine the status of the aquatic communities and habitats and to determine the degree to which the Class B(LR) uses may be impaired.