Sevenmile Creek IA 05-NOD-1410

Assessment Comments

Stream use assessment in September 1991.

Basis for Assessment

Used a review of the field sheet from the September 1991 DNR stream use assessment 6 miles ENE of Griswold in Cass County to upgrade the assessment of support of the Class B(LR) aquatic life uses due to (1) presence of a majority (5 of 7) of the expected fish taxa for streams in the Loess Hills and Rolling Prairies (47e) subecoregion, (2) presence of a moderately diverse fish community (8 species from 3 families) for this subecoregion, and (3) indications on field sheet of relatively good habitat with no signifciant impacts to aquatic habitats from stream bank erosion or recent channelization.   The most significant threat to the continued support of the Class B(LR) uses are the continuing influences of historical channelization throughout much of the length of Sevenmile Creek.   The data upon which this assessment was based are more than 5 years old.   Additional monitoring is needed to update this assessment and to determine the status of the aquatic communities and habitats.