North Skunk River IA 03-NSK-859
from the Mahaska/Poweshiek line to confluence with Sugar Cr. in S20 T78N R16W Poweshiek Co.
This is a Legacy Assessment. Prior to 2004, assessments were developed under a methodology that pre-dated the Integrated Report guidelines.
Assessment Cycle
2000
Result Period
1996 - 1998
Designations
Assessment Methodology
Assessment Type
Evaluated
Integrated Report
Category 0
Legacy ADBCode
IA 03-NSK-0020_2
Overall Use Support
Partial
Aquatic Life Use Support
Partial
Documentation
Assessment Comments
Stream use assessment in Poweshiek County.
Basis for Assessment
SUMMARY: The Class B(LR) aquatic life uses remain "partially supported." EXPLANATION: Continue to use the assessment of support of the Class B(LR) uses developed for the 1998 report. Follow-up monitoring is still needed to better 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
| 11/1/1994 | 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 |
Causes and Sources of Impairment
| Causes | Use Support | Cause Magnitude | Sources | Source Magnitude |
|---|---|---|---|---|
| Other habitat alterations | Overall Use Support | Moderate |
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| Other habitat alterations | Aquatic Life Support | Moderate |
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| Siltation | Overall Use Support | Moderate |
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| Siltation | Aquatic Life Support | Moderate |
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| Suspended solids | Overall Use Support | Moderate |
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| Suspended solids | Aquatic Life Support | Moderate |
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