Iowa DNR

Water Quality Assessments

Impaired Waters List

Walnut Creek IA 03-SSK-953

mouth (S5 T82N R23W Story Co.) to confluence with unnamed tributary in SE 1/4 S34 T83N R24W Story Co.

Assessment Cycle
Result Period
1990 - 1992
Assessment Type
Integrated Report
Category 0
Legacy ADBCode
IA 03-SSK-0058_0
Overall Use Support
Aquatic Life Use Support
Assessment Comments

Stream use assessment.

Basis for Assessment

Stream assessment form indicates above average habitat for small stream in this region.   Coarse substrates, pool & riffle habitat observed to support a good diversity of headwater fish species.   Relatively low diversity and especially numbers of fish observed.   Suspect a water toxicity problem but source unknown.   Only species with more than three individuals were the relatively pollution tolerant bluntnose minnow and creek chub; approximately 20 individuals of each of these species were collected.

Monitoring and Methods
Assessment Key Dates
10/1/1992 DNR Stream Use Assessment
330 Fish surveys
375 Visual observation-- may not quantify some parameters-- single season-- by prof.
Monitoring Levels
Biological 3
Habitat 3
Physical Chemistry 0
Toxic 0
Pathogen Indicators 0
Other Health Indicators 0
Other Aquatic Life Indicators 0
# of Bio Sites 0
BioIntegrity N/A