Iowa DNR

Water Quality Assessments

Impaired Waters List

South Raccoon River IA 04-RAC-1181

mouth (S21, T78, R27W, Dallas Co.) to confluence with Middle Raccoon R. in S9, T78N, R29W near Redfield in Dallas Co

Assessment Cycle
Release Status
Result Period
1996 - 1998
Assessment Type
Not Assessed
Integrated Report
Category 0
Legacy ADBCode
IA 04-RAC-0170_0
Overall Use Support
Not assessed
Aquatic Life Use Support
Not assessed
Fish Consumption
Not assessed
Assessment Comments

No assessment conducted.

Basis for Assessment

SUMMARY:  The Class B(WW) aquatic life uses were "not assessed."  The fish consumption uses remain "not assessed."  EXPLANATION:  The DNR quarterly water quality monitoring station near Redfield (station 429340), upon which previous assessment of the Class B(WW) uses was based, has not been monitored since the 1992-93 biennial period.   These data are now considered too old (greater than five years) for developing a valid assessment of support of the Class A and Class B(WW) uses.   Thus, the Class B(WW) aquatic life uses were changed from "fully supported / threatened" to "not assessed."  As part of DNR's expanded water quality monitoring program, monthly monitoring at the Redfield station began in October 1999.   The fish consumption uses remain "not assessed" due to lack of fish tissue monitoring on this river reach.

Monitoring and Methods
Assessment Key Dates
230 Fixed station physical/chemical (conventional plus toxic pollutants)
150 Monitoring data more than 5 years old
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