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Fish Hatcheries And Preserves, Rapid City, South Dakota. NPDES permit SD0000060, in force until Dec 31, 2030. Last 12 months: no values over a limit, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. fahrenheit | 30-day average | report only (deg F) | all year |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year |
| Flow rate | 30-day average | report only (MGD) | all year |
| Flow rate | daily maximum | report only (MGD) | all year |
| Oxygen, dissolved [DO] | daily minimum | ≥ 7 mg/L | all year |
| pH | minimum | ≥ 6.6 SU | all year |
| pH | maximum | ≤ 8.3 SU | all year |
| Solids, total suspended | 30-day average | ≤ 10 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 17.5 mg/L | all year |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year |
| Fish feed used | monthly total | report only (lb/mo) | all year |
| Biomass, fish | annual total | report only (lb/yr) | Dec |
| Floating solids, waste or visible foam-visual | daily maximum | ≤ 0 N=0;Y=1 | all year |
Cited limits by parameter: South Dakota's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/SD0000060 · MCP: https://passage-data.com/mcp