Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

West Otter Creek IA 02-CED-516

mouth (S7 T84N R7W Linn Co.) to confluence with unnamed perennial tributary in S6 T85N R7W Linn Co.

Assessment Cycle
1998
Result Period
1994 - 1996
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 02-CED-02307_0
Overall Use Support
Fully
Aquatic Life Use Support
Fully
Documentation
Assessment Comments

Stream use assessment in 1992, three DNR Fisheries surveys in 1996, and Cornell College sampling in 1997.

Basis for Assessment

Used a review of (1) the field sheet from the May 1992 DNR stream use assessment, (2) summaries of three surveys on W.  Otter Cr.  by DNR Fisheries in July 1996, and (3) results of sampling by Cornell College in 1997 to upgrade the assessment of support of the Class B(LR) aquatic life uses from FST to FS due to (1) presence of a relatively diverse fish community (up to 20 species from 6 families) for streams in the Iowan Surface subecoregion, (2) presence of nearly all the expected fish taxa (up to 10 of 11) for streams in this subregion, and (3) indications on the 1992 SUA field sheet of above average habitat quality.   In addition this stream, similar to others in the Otter Creek system, supports populations of sensitive species including southern redbelly dace, Ozark minnow, rosyface shiner, slender madtom, smallmouth bass, and rainbow darter.

Monitoring and Methods
Assessment Key Dates
6/1/1997 Biological Monitoring
7/1/1996 Biological Monitoring
5/1/1992 DNR Stream Use Assessment
Methods
330 Fish surveys
375 Visual observation-- may not quantify some parameters-- single season-- by prof.
Monitoring Levels
Biological 3
Habitat 0
Physical Chemistry 0
Toxic 0
Pathogen Indicators 0
Other Health Indicators 0
Other Aquatic Life Indicators 0
# of Bio Sites 0
BioIntegrity N/A