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
1994
Result Period
1990 - 1992
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 04-RAC-0010_2
Overall Use Support
Partial
Aquatic Life Use Support
Partial
Fish Consumption
Not assessed
Primary Contact Recreation
Partial
Drinking Water
Partial
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
5 of 7 samples collected at approx average flows exceeded Class A WQC for fecal coliforms. Due to lack of complete data, use PBJ to assess support of Class A use as PS. Class C use was assessed as PS: 25 of 63 samples contained NO3 at > 10 mg/l, but mean NO3 level was 8.7 (=FS). Installation of nitrate removal system by city of Des Moines, however, suggests that Class C uses should be assessed as PS.