Trout Creek (aka Trout Run) IA 01-UIA-269
mouth (S23 T98N R8W Winneshiek Co.) to confluence with unnamed tributary (aka Trout Run) in S27 T98N R8W Winneshiek Co.
Assessment Comments
Assessment is based on results of fish / benthic macroinvertebrate monitoring in 1998 and 1999 by UHL.
Basis for Assessment
SUMMARY: The Class B(CW) aquatic life uses remain assessed (monitored) as "fully supported / threatened" (minor impacts) based on results of biological monitoring conducted by UHL. Fish consumption uses remain "not assessed."
EXPLANATION: The aquatic life uses remain assessed as "fully supported / threatened" based on results of the biological monitoring conducted on this stream segment from 1997 and 1998 (see assessment for the 2000 report). These data are less than five years old and, according to IDNR's methodology for Section 305(b) assessments, are thus appropriate for characterizing current water quality conditions.
Fish consumption uses remain "not assessed" due to the lack of fish contaminant monitoring in this stream segment.
Assessment Key Dates
| 9/30/1999 | Fixed Monitoring End Date |
| 10/1/1997 | Fixed Monitoring Start Date |
Methods
| 320 | Benthic macroinvertebrate surveys |
| 330 | Fish surveys |
Monitoring Levels
| Biological | 4 |
| 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 |
|---|---|---|---|---|
| Organic enrichment/Low DO | Aquatic Life Support | Not Impairing |
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| Other habitat alterations | Aquatic Life Support | Not Impairing |
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| Siltation | Aquatic Life Support | Not Impairing |
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