Raccoon River IA 04-RAC-1117
from the Polk/Dallas county line to confluence of North Raccoon and South Raccoon rivers in Dallas Co.
This is a Legacy Assessment. Prior to 2004, assessments were developed under a methodology that pre-dated the Integrated Report guidelines.
Assessment Cycle
1992
Result Period
1988 - 1990
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 04-RAC-0010_2
Overall Use Support
Not supporting
Aquatic Life Use Support
Threatened
Fish Consumption
Not assessed
Primary Contact Recreation
Not supporting
Drinking Water
Not supporting
Documentation
Assessment Comments
Same comments as prepared for Raccoon River waterbody segment 04-RAC-0010-1 (mouth to Polk/Dallas county line).
Basis for Assessment
6 of 10 samples collected at approx. average flows had levels of fecal coliforms that exceeded the Class A WQC (60% violation = NS). Class C use was assessed as NS due to frequent DW advisories issued by city of Des Moines due to high levels of nitrate in river (21 of 76 samples contained NO3 > 10 mg/l). No violations of Class B WQC (=FST).