West Branch Iowa River IA 02-IOW-775
mouth (S19 T93N R23W Wright Co.) to confluence with unnamed tributary (outlet of E. Twin L.) in NE 1/4 S29 T9N R24W Hancock Co.
This is a Legacy Assessment. Prior to 2004, assessments were developed under a methodology that pre-dated the Integrated Report guidelines.
Assessment Cycle
1998
Result Period
1994 - 1996
Designations
Assessment Type
Evaluated
Integrated Report
Category 0
Legacy ADBCode
IA 02-IOW-0400_1
Overall Use Support
Partial
Aquatic Life Use Support
Partial
Documentation
Assessment Comments
Stream use assessment in 1992.
Basis for Assessment
Continue to use the assessment of support of the Class B(LR) aquatic life uses developed for the 1996 report (=PS). Review of the field sheet from the October 1992 DNR stream use assessment shows that only two species of fish were observed in approximately 500 feet of seining. Many of the fish species/genera typical of Class B(LR) streams in this region were not present. Follow-up monitoring is needed to determine the status of the aquatic communities and habitats and to determine the degree to which the Class B(LR) uses may be impaired.
Monitoring and Methods
Assessment Key Dates
| 10/1/1992 | DNR Stream Use Assessment |
Methods
| 330 | Fish surveys |
| 375 | Visual observation-- may not quantify some parameters-- single season-- by prof. |
| 150 | Monitoring data more than 5 years old |
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 |