Elk River IA 01-MAQ-8
mouth (Clinton Co.) to North Branch Elk River (S10 T83N R6E Clinton 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
Monitored
Integrated Report
Category 0
Legacy ADBCode
IA 01-MAQ-0030_1
Overall Use Support
Partial
Aquatic Life Use Support
Partial
Fish Consumption
Not assessed
Documentation
Assessment Comments
1991 stream use assessment in Clinton County. Fisheries surveys by LTRMP (1992) and DNR Fisheries (1997).
Basis for Assessment
Used information in an April 2, 1998 memo from S. Gritters (LTRMP, Bellevue) regarding high levels of ammonia in Elk River following runoff and regarding a possible decline in number of species present in the stream as reflected in surveys conducted in 1987, 1992 and 1997. Dead fish and other aquatic life were observed during the August 1997 surveys conducted by DNR Fisheries. Additional monitoring is needed to determine the nature, causes, and sources of ongoing impairments to the aquatic life of this stream.
Monitoring and Methods
Assessment Key Dates
Methods
| 300 | BIOLOGICAL MONITORING |
| 330 | Fish surveys |
| 240 | Non-fixed station physical/chemical (conventional + toxicants) |
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 and Sources of Impairment
| Causes | Use Support | Cause Magnitude | Sources | Source Magnitude |
|---|---|---|---|---|
| Organic enrichment/Low DO | Overall Use Support | Moderate |
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| Organic enrichment/Low DO | Aquatic Life Support | Moderate |
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| Unionized Ammonia | Overall Use Support | Moderate |
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| Unionized Ammonia | Aquatic Life Support | Moderate |
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