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
1996 - 1998
Assessment Type
Not Assessed
Integrated Report
Category 0
Legacy ADBCode
IA 06-LSR-0030_1
Overall Use Support
Not assessed
Aquatic Life Use Support
Not assessed
Fish Consumption
Not assessed
Primary Contact Recreation
Not assessed
Assessment Comments

There was not enough recent data (<5 years old) to complete an assessment.

Basis for Assessment

SUMMARY:  The Class A (primary contact recreation) uses and the Class B(WW) aquatic life uses are considered "not assessed."  Fish consumption uses remain "not assessed."  EXPLANATION:  The assessment of support of the Class A and Class B(WW) uses developed for previous reports (see above) were based, in part, on results of DNR quarterly water quality monitoring near Larabee (station 911060).   Data from this station, however, were last collected from October 1993 through September 1995 and are thus considered too old (greater than five years) for characterizing current water quality conditions.   As part of DNR's expanded water quality monitoring program, monthly monitoring at the Larabee station began in October 1999.   Results from this monitoring will allow development of an updated assessment of support of beneficial uses for the 2002 report.   Fish consumption uses remained "not assessed" due to the lack of recent fish tissue monitoring in this river reach.   The most recent monitoring was conducted in 1992 near the Linn Grove Dam as part of the EPA/DNR fish tissue (RAFT) monitoring program.   These data are considered too old (greater than five years) for characterizing current levels of fish contaminants.

Monitoring and Methods
Assessment Key Dates
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