North Raccoon River IA 04-RAC-1139
from County Road M54 (S24T88N R36W Sac Co.) to confluence with Drainage Ditch 101 in S36 T91N R36W Buena Vista Co.
Assessment Comments
1992 SUA: habscr/fshscr: 25/12 (shock, 11 species); 17 spp. from 5 fams from March 1990 DNR survey.
Basis for Assessment
Used a review of the 1990 and 1992 DNR stream assessments to continue to assess support of the Class B(WW) aquatic life uses as FST due to (1) presence of a relatively diverse fish community (17 species from 5 families) for streams of the Des Moines Lobe subecoregion (47b), (2) presence of all the expected fish taxa (11 of 11) for this subecoregion in the 1990 DNR survey W of Newell, and (3) presence of the expected game fish species (adult smallmouth bass) in the 1990 DNR survey [the biological sampling conducted for the 1992 DNR survey was not completed due to a thunderstorm; thus, the fish community at this site was not fully sampled]. The primary threat to the continued support of the Class B(WW) aquatic life uses remains channelization and other channel alterations.
Assessment Key Dates
Methods
| 330 | Fish surveys |
| 375 | Visual observation-- may not quantify some parameters-- single season-- by prof. |
Monitoring Levels
| Biological | 3 |
| Habitat | 3 |
| Physical Chemistry | 0 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 0 |
| BioIntegrity | N/A |