Green Hills
Key Takeaway
Green Hills is classified as low hazard in Wyoming. It was completed in 1971 and is 55 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 17 ft (taller than 15% in WY) |
| Dam Length | 588 ft |
| Dam Type | Earth |
| Max Storage | 115 acre-ft |
| Normal Storage | 51 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 337 cfs |
| Year Completed | 1971 (55 years old) |
| NID ID | WY01008 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF WORLAND
Local Government
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Green Hills?
Green Hills is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Green Hills?
Green Hills is owned by CITY OF WORLAND (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Green Hills built?
Green Hills was completed in 1971, making it 55 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 Green Hills?
Green Hills serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Green Hills?
Green Hills has a dam height of 17 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Green Hills last inspected?
Green Hills was last inspected on March 31, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.