G. W.
Key Takeaway
G. W. is classified as low hazard in Wyoming. It was completed in 1969 and is 57 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 30 ft (taller than 63.1% in WY) |
| Dam Length | 790 ft |
| Dam Type | Earth |
| Max Storage | 369 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 20 sq mi |
| Max Discharge | 937 cfs |
| Year Completed | 1969 (57 years old) |
| NID ID | WY00042 |
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
GROSS & WILKINSON RANCH AND STATE LAND
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of G. W.?
G. W. 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 G. W.?
G. W. is owned by GROSS & WILKINSON RANCH AND STATE LAND (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was G. W. built?
G. W. was completed in 1969, making it 57 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 G. W.?
G. W. serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is G. W.?
G. W. has a dam height of 30 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 G. W. last inspected?
G. W. was last inspected on May 21, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.