Buck Creek IA 01-MAQ-45
mouth (S11 T87N R4W Delaware Co.) to Golden Branch in S11 T87N R5W Delaware Co.
Assessment Comments
1991 stream use assessment in Delaware County.
Basis for Assessment
Used the assessment of support of the Class B(LR) aquatic life uses developed for the 1996 report (FST). Additional monitoring is needed to update and better determine the status of habitat and the aquatic communities. Because data are > five years old, the 305(b) assessment category was changed to "evaluated." A review of the field sheet from the September 1991 DNR stream use assessment in Delaware County shows very low fish community diversity (4 species from 2 families) for streams in the Iowan Surface subecoregion (47c) and presence of only 3 of the expected 11 fish taxa for streams in the subregion. Although these results suggest an impairment, continue to use the FST assessment due to notes on field sheet regarding rocky substrates and difficulty seining.
Assessment Key Dates
| 9/1/1991 | DNR Stream Use Assessment |
Methods
| 120 | Surveys of fish and game biologists/other professionals |
| 330 | Fish surveys |
| 150 | Monitoring data more than 5 years old |
Monitoring Levels
| Biological | 0 |
| Habitat | 0 |
| Physical Chemistry | 0 |
| Toxic | 0 |
| Pathogen Indicators | 0 |
| Other Health Indicators | 0 |
| Other Aquatic Life Indicators | 0 |
| # of Bio Sites | 0 |
| BioIntegrity | N/A |
| Causes | Use Support | Cause Magnitude | Sources | Source Magnitude |
|---|---|---|---|---|
| Flow alteration | Overall Use Support | Slight |
|
|
| Flow alteration | Aquatic Life Support | Slight |
|
|
| Nutrients | Overall Use Support | Slight |
|
|
| Nutrients | Aquatic Life Support | Slight |
|
|
| Other habitat alterations | Overall Use Support | Slight |
|
|
| Other habitat alterations | Aquatic Life Support | Slight |
|
|
| Siltation | Overall Use Support | Slight |
|
|
| Siltation | Aquatic Life Support | Slight |
|
|