East Fork Wapsipinicon River IA 01-WPS-408
upper end of Sweet Marsh Segment C (S26 T93N R12W Bremer Co.) to the Bremer/Chickasaw county line (N line S3 T93N R12W Bremer Co.)
Assessment Comments
Assessment is based on results of IDNR/UHL biological (biocriteria) monitoring in 1997 (Fish IBI= 43(fair), BM-IBI= 73(good)).
Basis for Assessment
SUMMARY: The Class B(LR) aquatic life uses are assessed (monitored) as "fully supported / threatened" (minor impacts) based on results of IDNR/UHL biological (biocriteria) sampling in 1997. This is the same assessment as that developed for the 2002 reporting cycle.
EXPLANATION: This assessment was based on results of a 1997 biocriteria sampling. The F-IBI score was 43 (fair) and the BM-IBI score was 73 (good). The aquatic life use support was assessed as fully supported / threatened (=FST), based on a comparison of the F-IBI and BM-IBI scores with biological assessment criteria determined from a statistical analysis of data collected at stream ecoregion reference sites from 1994-2001.
Assessment Key Dates
| 9/5/1997 | Biological Monitoring |
| 9/5/1997 | One-time Chemical Monitoring |
Methods
| 220 | Non-fixed station physical/chemical monitoring (conventional pollutant only) |
| 315 | Regional reference site approach |
| 320 | Benthic macroinvertebrate surveys |
| 330 | Fish surveys |
| 380 | Quan. measurements of instream parms-- channel morphology-- floodplain-- 1-2 seasons-- by prof |
Monitoring Levels
| Biological | 4 |
| Habitat | 4 |
| Physical Chemistry | 1 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 1 |
| BioIntegrity | Fair |
| Causes | Use Support | Cause Magnitude | Sources | Source Magnitude |
|---|---|---|---|---|
| Other habitat alterations | Aquatic Life Support | Not Impairing |
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| Siltation | Aquatic Life Support | Not Impairing |
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