Smith Creek IA 03-NSK-871
mouth (S18 T76N R12W Keokuk Co.) to headwaters in NE 1/4 S23 T77N R13W Keokuk Co.
Assessment Comments
Assessment is based on occurrence of a fish kill in November 2001.
Basis for Assessment
Not assessed for Section 305(b) report prior to 2002.
The general aquatic life uses are assessed (evaluated) as "partially supported" due to occurrence of a fish kill. EXPLANATION: A fish kill occurred on this stream segment on November 8, 2001. The kill affected approximately 1 mile of Smith Creek in S1, T76N, R13W, Keokuk County approximately 2.5 miles NE of What Cheer. The kill was caused by the discharge of land-applied hog manure; an estimated 8,300 fish were killed. According to DNR's assessment methodology for Section 305(b) reporting, occurrence of a single pollution-caused fish kill during the most recent three-year period (1999-2001) indicates "partial support" of the aquatic life uses. Thus, the general aquatic life uses of this stream segment were assessed as "partially supported."
Assessment Key Dates
| 11/8/2001 | Fishkill |
Methods
| 140 | Incidence of spills and/or fish kills |
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 |
|---|---|---|---|---|
| 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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