Stemilt Equalizing Reservoir
Key Takeaway
Stemilt Equalizing Reservoir is classified as high hazard in Washington. It was completed in 1985 and is 41 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Type | Earth |
| Max Storage | 43 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 19 cfs |
| Year Completed | 1985 (41 years old) |
| NID ID | WA01476 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Stemilt Irrigation District
Public Utility
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High HazardFrequently Asked Questions
What is the hazard classification of Stemilt Equalizing Reservoir?
Stemilt Equalizing Reservoir is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Stemilt Equalizing Reservoir?
Stemilt Equalizing Reservoir is owned by Stemilt Irrigation District (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Stemilt Equalizing Reservoir built?
Stemilt Equalizing Reservoir was completed in 1985, making it 41 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Stemilt Equalizing Reservoir?
Stemilt Equalizing Reservoir serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Stemilt Equalizing Reservoir last inspected?
Stemilt Equalizing Reservoir was last inspected on August 22, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.