Iowa DNR
ADBNet

Water Quality Assessments

Impaired Waters List

Bloody Run IA 01-YEL-433

mouth (Clayton Co.) to west line of S22 T95N R4W Clayton Co.

Assessment Cycle
1996
Result Period
1992 - 1994
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 01-YEL-0060_0
Overall Use Support
Threatened
Aquatic Life Use Support
Threatened
Fish Consumption
Not assessed
Documentation
Assessment Comments

Assessment is based on (1) results of monitoring of fish, macroinvertebrates, habitat & water quality as part of the Sny Magill / Bloody Run project and (2) DNR summary of trout reproduction. Highlighted in Iowa Conservationist.

Basis for Assessment

Used results of monitoring for fish, water quality, habitat, and aquatic macroinvertebrates presented in Seigley et al.  (1996) (Sny Magill nonpoint source pollution monitoring project, Clayton County, Iowa:  water year 1994, DNR/ GSB Technical Information Series 36) to assess the B(CW) aquatic life uses as FST.   Water quality data, however, suggest that episodes of low DO occur on both this stream and Sny Magill.  Aquatic community does not reflect any low DO/organic enrichment impact.   Causes of low DO may be related to runoff events, but issue needs further study.   Stream highlighted as a trout stream in the March/April 1996 issue of the Iowa Conservationist.