Richland Creek IA 02-IOW-718
mouth (S13 T82NR14W Tama Co.) to confluence with unnamed tributary in NE 1/4 SE 1/4 S20 T82N R14W Tama Co.
Assessment Comments
Assessment based on 1995 biocriteria data.
Basis for Assessment
Used a review of the two June 1992 DNR stream use assessments, and the results of the September 1995 DNR biocriteria sampling, to upgrade the assessment of support of the Class B(LR) aquatic life uses from PS to FST due to (1) presence of relatively diverse fish communities (species/ familes, dstr->upstr: 14/6; 18/5; 7/2) for streams in the Southern Iowa Rolling Loess Prairies subecoregion, (2) presence of a majority of the expected fish taxa (5 of 8 & 7 of 8 at the two downstream sites) for streams in this subregion, and (3) indications on SUA field sheets of a well-meandered channel form with a tree-dominated riparian area. As noted in the assessment developed for the 1996 report, channel alteration (channelization) and sedimentation appear to be the primary impacts to the physical characteristics of this stream.
Assessment Key Dates
| 9/8/1995 | Biological Monitoring |
| 6/2/1992 | DNR Stream Use Assessment |
| 6/1/1992 | DNR Stream Use Assessment |
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 |