Cedar River IA 02-CED-468
from dam of Cedar Falls Impoundment (NW 1/4 S12 T89N R14W Black Hawk Co.) to upper end of impoundment (W line S2 T89N R14W Black Hawk 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 02-CED-0050-L_0
Overall Use Support
Threatened
Aquatic Life Use Support
Threatened
Fish Consumption
Threatened
Primary Contact Recreation
Not assessed
Documentation
Assessment Comments
Assessment is based on results of IDNR ambient city monitoring and fish tissue (RAFT) monitoring.
Basis for Assessment
Levels of fish contams in whole-fish carp samples did exceed FDA action level for dieldrin; same sample had > 1/2 FDA AL for tech. chlordane; due to use of whole-fish, assess fish consumption use as FST. No violations of Class B WQC; thus assess aquatic life uses as FST due to known threat from ag. NPS. No data available for fecal coliform bacteria; thus, Class A support not assessed.
Monitoring and Methods
Assessment Key Dates
Methods
| 230 | Fixed station physical/chemical (conventional plus toxic pollutants) |
| 260 | Fish tissue analysis |
| 420 | Water column surveys (e.g. fecal coliform) |
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 |