Iowa DNR

Water Quality Assessments

Impaired Waters List

Nishnabotna River IA 05-NSH-1412

IA/MO line to (S26 T67NR42W Fremont Co.) to confluence of E. Nishnabotna and W. Nishnabotna rivers in S2 T67N R42W Fremont Co.

Assessment Cycle
Result Period
1994 - 1996
Assessment Type
Integrated Report
Category 0
Legacy ADBCode
IA 05-NSH-0010_0
Overall Use Support
Aquatic Life Use Support
Not assessed
Fish Consumption
Assessment Comments

Assessment is based on results of fish tissue (RAFT) monitoring in 1995.

Basis for Assessment

Due to lack of either recent chemical or biological information, changed the assessment of support of the Class B(WW) aquatic life uses to NAS.  Fish consumption uses remain assessed as FS based on results of 1995 RAFT fish tissue monitoring.   Previous assessments of the lower Nishnabotna River were developed without the benefit of information on the condition of the biological communities protected by the Class B(WW) water quality standards.   Monitoring is needed to determine the status of the aquatic communities and to determine the degree to which the Class B(WW) uses may be impaired.

Monitoring and Methods
Assessment Key Dates
9/1/1995 Fish Tissue Monitoring
260 Fish tissue analysis
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