Plum Creek IA 04-EDM-982
mouth (S17 T96N R28W Kossuth Co.) to confluence with unnamed tributary in S16 T96N R27W Kossuth Co.
Assessment Comments
Habscr/fshscr: 25/11 (seine) (fish score corrected due to error in scoring % pollution tolerant species); 1997 Biocriteria: Fish IBI=31 (fair), BM-IBI=75 (good).
Basis for Assessment
SUMMARY: The Class B(LR) aquatic life uses remain assessed as "fully supported / threatened" (minor impacts). EXPLANATION: The aquatic life uses remain assessed as "fully supported / threatened" based on results of the IDNR/UHL biological monitoring conducted on this stream segment in 1997 (see assessment for the 2000 report above). 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.
Assessment Key Dates
| 8/12/1997 | Biological Monitoring |
Methods
| 330 | Fish surveys |
| 380 | Quan. measurements of instream parms-- channel morphology-- floodplain-- 1-2 seasons-- by prof |
| 220 | Non-fixed station physical/chemical monitoring (conventional pollutant only) |
| 315 | Regional reference site approach |
| 320 | Benthic macroinvertebrate surveys |
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 | Overall Use Support | Not Impairing |
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| Other habitat alterations | Aquatic Life Support | Not Impairing |
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