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
Used results of DNR monthly monitoring station SE of Norwalk to assess support of the Class B(LR) aquatic life uses as FST due to lack of violations of WQ criteria for toxic and conventional pollutants in the 24 samples collected during the Oct 95-Sept 97 period. A review of the field sheet from the September 1990 DNR stream use assessment shows that a slight majority of the expected fish taxa (5 of 8) for streams in the Mississippi River portion of the Southern Iowa Rolling Loess Prairies subecoregion (47f) were present as was the expected game fish species (channel catfish). The data upon which this assessment is based are more than 5 years old. Additional monitoring is needed to update this assessment and to determine the status of the aquatic communities and habitats.
Assessment Key Dates
Methods
210 | Fixed station physical/chemical monitoring (conventional pollutants only) |
Monitoring Levels
Biological | 0 |
Habitat | 0 |
Physical Chemistry | 3 |
Toxic | 0 |
Pathogen Indicators | 0 |
Other Health Indicators | 0 |
Other Aquatic Life Indicators | 0 |
# of Bio Sites | 0 |
BioIntegrity | N/A |