East Fork Grand River IA 05-GRA-1375

Assessment Comments

Stream use assessment in July 1991.

Basis for Assessment

Used a review of the field sheet from the July 1991 DNR stream use assessment 7 mi SSE of Mt.  Ayr to continue to use the assessment of support of the Class B(LR) aquatic life uses developed for the 1994 report (=FST).   As noted in the assessment developed for the 1994 305(b) report (see above), the stream reach assessed was under the influence of a beaver dam; thus, assessment results are likely not representative of the stream in general, especially regarding aquatic species.   Although a moderately diverse fish community of 12 species from 4 families was present, several taxa of the expected fish taxa wer not present (4 of 8), probably due to the standing-water conditions.   The data upon which this assessment is based are more than 5 years old.   Additional monitoring is neede to update the assessment and to better determine the status of the aquatic communities and habitats.  The field sheet from the 1991 assessment does not indicate any significant threats to the continued support of the Class B(LR) uses.