Rock Creek IA 02-CED-493
mouth (S2 T79N R3W Cedar Co.) to confluence with unnamed tributary in SW 1/4 S11 T80N R3W Cedar Co.
Assessment Comments
Assessment based on 1995 biocriteria data.
Basis for Assessment
Used a review of the field sheet from the August 1994 DNR stream use assessment and the 1995 biocriteria sampling to upgrade the assessment of support of the Class B(WW) aquatic life uses from FST to FS due to (1) very diverse fish community (25 species from 6 families) for streams in the Southern Iowa Rolling Loess Prairies subecoregion, (2) presence of all the expected fish taxa (8 of 8) for streams in this subregion, (3) presence of the expected game fish species (channel catfish (8) and smallmouth bass (24)), and (4) indications on the DNR stream use assessment field sheet of high quality aquatic habitats with no channel alterations, very stable stream banks, very diverse substrates, and a riparian zone dominated by mature trees.
Assessment Key Dates
| 8/9/1995 | Biological 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 | Good |