Iowa DNR

Water Quality Assessments

Impaired Waters List

Turkey River IA 01-TRK-148

mouth (Clayton Co.) to confluence with Volga R. in S26, T92N, R4W, Clayton Co.

Assessment Cycle
Release Status
Result Period
1996 - 1998
Assessment Type
Integrated Report
Category 0
Legacy ADBCode
IA 01-TRK-0200_0
Overall Use Support
Aquatic Life Use Support
Fish Consumption
Not assessed
Assessment Comments

Assessment is based on IDNR monthly WQ monitoring station south of Garber at USGS gauge.

Basis for Assessment

SUMMARY:  The Class B(WW) aquatic life uses remain assessed as "fully supporting / threatened."  Fish consumption uses remain "not assessed."  EXPLANATION:  Continue to use the assessment of the Class B(WW) uses developed for the 1998 report (above).   This assessment was based on results of water quality monitoring during the 1996-1997 biennial period at the DNR quarterly monitoring station near Garber.   Results from stations monitored monthly or more frequently, however, are preferred for Section 305(b) assessments in order to improve the accuracy and confidence level of the assessment.   As part of DNR's expanded water quality monitoring program, monthly monitoring at the Garber station began in October 1999.   Fish consumption uses remain "not assessed" due to the lack of fish tissue monitoring in this river reach.

Monitoring and Methods
Assessment Key Dates
9/12/2001 Fixed Monitoring End Date
8/29/2000 Biological Monitoring
10/21/1999 Fixed Monitoring Start Date
230 Fixed station physical/chemical (conventional plus toxic pollutants)
260 Fish tissue analysis
Monitoring Levels
Biological 0
Habitat 0
Physical Chemistry 3
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