Iowa DNR

Water Quality Assessments

Impaired Waters List

West Fork Little Sioux River IA 06-LSR-1598

mouth (S12 T84N R45W Monona Co.) to confluence with a small unnamed tributary near Climbing Hill in S16 T87N R45W Woodbury Co.

Assessment Cycle
Result Period
1992 - 1994
Assessment Type
Integrated Report
Category 0
Legacy ADBCode
IA 06-LSR-0120_1
Overall Use Support
Aquatic Life Use Support
Assessment Comments

Assessment is based on results of three October 1995 IDNR stream use assessments conducted in Monona and Woodbury counties.

Basis for Assessment

Used results of three October 1995 stream use assessments in Monona and Woodbury counties to assess the support of the Class B(LR) aquatic life uses as PS due to (1) habitat scores (20, 21, and 23) generally poorer than the overall median habitat score (22) for DNR stream use assessments despite relatively favorable low-flow characteristics, (2) field sheets indicate lack of habitat diversity and extensive channel alterations, (3) fish scores (11, 10, 12) generally poorer than the 75th percentile score for stream assessments made with electrofishing (although assessments were made during high flows which hindered collection effeciency).   Habitat somewhat improves near the Climbing Hill site due to meandering.

Monitoring and Methods
Assessment Key Dates
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