Iowa DNR

Water Quality Assessments

Impaired Waters List

Little Sioux River IA 06-LSR-1570

from Highway 3 (S26, T92N, R40W, Cherokee Co.) to confluence with Waterman Cr. in S26, T94N, R39W, O'Brien Co.

Assessment Cycle
Release Status
Result Period
1992 - 1994
Assessment Type
Integrated Report
Category 0
Legacy ADBCode
IA 06-LSR-0030_1
Overall Use Support
Aquatic Life Use Support
Fish Consumption
Not assessed
Primary Contact Recreation
Not assessed
Assessment Comments

Assessment based on IDNR fisheries surveys conducted in Cherokee and O'Brien counties in 1989; sampling by J. Olson and D. Howell.

Basis for Assessment

Used results of DNR fisheries surveys conducted as part of the 1989 Iowa Natural History Foray in Cherokee and O'Brien counties to assess support of the Class B(WW) aquatic life uses as FST due to (1) relatively diverse fish communities, (2) presence of sport fish (channel catfish) at both locations sampled, (3) relatively undisturbed riparian conditions in the areas sampled, and (4) presence of meandered channel with good diversity of aquatic habitats.

Monitoring and Methods
Assessment Key Dates
330 Fish surveys
Monitoring Levels
Biological 0
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
Causes and Sources of Impairment
Causes Use Support Cause Magnitude Sources Source Magnitude