Dibble Creek IA 01-TRK-203
confluence with unnamed tributary in S27 T95N R7W (Fayette Co.) to headwaters in NW 1/4 S36 T95N R7W Winneshiek Co.
Assessment Comments
Assessment is based on results of IDNR/UHL biological (biocriteria) sampling in 1998 (Fish IBI=57 (good), BM-IBI=74 (good)).
Basis for Assessment
SUMMARY: The general aquatic life uses remain assessed as "fully supported" based on results of the IDNR/UHL biologica sampling conducted in 1998 as part of the IDNR stream biocriteria project. This assessment is the same as that developed for the 2002 report.
EXPLANATION: Continue to use the assessment developed for the 2000 report. This assessment was based on results of IDNR/UHL biocriteria monitoring in 1998. These data are less than five years old and, according to the IDNR methdology for Section 305(b) reporting, are appropriate for characterizing current water quality conditions.
Assessment Key Dates
| 8/4/1998 | Biological Monitoring |
| 8/4/1998 | 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 | 0 |
| BioIntegrity | N/A |