Cedar River IA 02-CED-479
from Rock Cr. nr Orchard (S24 T97N R17W Floyd Co.) to Iowa / Minnesota state line (S8 T100N R18W Mitchell Co.)
Assessment Comments
Assessment remains based on (1) on statewide assessment of freshwater mussels, (2) information from IDNR Fisheries Bureau, and (3) results of U.S. EPA/IDNR fish tissue (RAFT) monitoring.
Basis for Assessment
SUMMARY: The Class A (primary contact recreation) remain "not assessed," the Class B(WW) aquatic life uses remain assessed as "fully supporting," and the fish consumption uses remain assessed as "fully supporting / threatened." EXPLANATION: Due to problems with data acquisition (STORET), the assessments of support of the Class A and Class B(WW) uses developed for the 1998 report (above) were used for the 2000 report. Fish consumption uses remain assessed as "fully supporting / threatened" based on results of EPA/DNR fish tissue (RAFT) monitoring conducted west of Osage in 1995 (see assessment for the 1995 report).
Assessment Key Dates
| 9/30/1999 | Fixed Monitoring End Date |
| 9/30/1985 | Fixed Monitoring Start Date |
Methods
| 120 | Surveys of fish and game biologists/other professionals |
| 260 | Fish tissue analysis |
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 |
| Causes | Use Support | Cause Magnitude | Sources | Source Magnitude |
|---|---|---|---|---|
| Nutrients | Overall Use Support | Slight |
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| Nutrients | Aquatic Life Support | Slight |
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| Other habitat alterations | Overall Use Support | Slight |
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| Other habitat alterations | Aquatic Life Support | Slight |
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| Siltation | Overall Use Support | Slight |
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| Siltation | Aquatic Life Support | Slight |
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