Northwest
Key Takeaway
Northwest is classified as high hazard in Utah. It was completed in 1940 and is 86 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 Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 603 acre-ft |
| Normal Storage | 523 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 17 cfs |
| Year Completed | 1940 (86 years old) |
| NID ID | UT00232 |
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
NORTHWEST IRRIGATION COMPANY
Private
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Low Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Northwest?
Northwest 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 Northwest?
Northwest is owned by NORTHWEST IRRIGATION COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Northwest built?
Northwest was completed in 1940, making it 86 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 Northwest?
Northwest 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 Northwest last inspected?
Northwest was last inspected on May 2, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.