North River IA 04-LDM-1097
from Co. Rd. R-63 (S16 T77N R24W Warren Co.) to confluence with Badger Cr. in S33 T77N R25W Warren Co.
Assessment Comments
Assessment is based on (1) results of DNR monthly monitoring SE of Norwalk.
Basis for Assessment
No violations of any Class B WQ criteria during reporting periods. Continue to assess as FST due to presumed threats from NPS pollution. Also, used the results of the September 1990 DNR stream use assessment to assess support of the Class B(WW) aquatic life uses as FST due to lack of channel alterations, presence of deep pools (too deep to wade), well-timbered riparian area with relatively stable stream banks, and a moderately diverse fish community (9 species; 4 families) that includes channel catfish. Field sheets suggest that continued support of the aquatic life uses is threatened by excessive siltation due to stream bank erosion and due to delivery of sediment in nonpoint source runoff.
Assessment Key Dates
Methods
| 330 | Fish surveys |
| 375 | Visual observation-- may not quantify some parameters-- single season-- by prof. |
| 210 | Fixed station physical/chemical monitoring (conventional pollutants only) |
Monitoring Levels
| Biological | 3 |
| Habitat | 3 |
| Physical Chemistry | 3 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 0 |
| BioIntegrity | N/A |