South Fork Iowa River IA 02-IOW-746
mouth (S4 T86N R19W Hardin Co.) to confluence with Tipton Cr. in S21 T87N R20W Hardin Co.
This is a Legacy Assessment. Prior to 2004, assessments were developed under a methodology that pre-dated the Integrated Report guidelines.
Assessment Cycle
1996
Result Period
1992 - 1994
Designations
Assessment Type
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 02-IOW-0270_0
Overall Use Support
Threatened
Aquatic Life Use Support
Threatened
Fish Consumption
Not assessed
Documentation
Assessment Comments
Assessment is based on results of stream use assessments in Hardin County.
Basis for Assessment
Used results of DNR stream use assessment in Hardin County (3 miles NNW of New Providence) to assess support of the Class B(WW) aquatic life uses as FST due to (1) habitat score (25) better than the overall median score for DNR stream use assessments, (2) fish score (12) equal to the 75th percentile for stream assessments made with electrofishing, (3) presence of game fish (channel catfish and smallmouth bass, (4) presence of a very diverse fish community with over 20 species. Reach is threatened by agricultural NPS pollution and by animal feeding operations in the watershed.
Monitoring and Methods
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 |