Big Donaldson
Key Takeaway
Big Donaldson is classified as low hazard in Wyoming. It was completed in 1973 and is 53 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 22 ft (taller than 28.8% in WY) |
| Dam Length | 475 ft |
| Dam Type | Earth |
| Max Storage | 92 acre-ft |
| Normal Storage | 57 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1973 (53 years old) |
| NID ID | WY01480 |
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
WILLIAM & PAUL LANDECK
Private
Nearby Dams
Fowler
Johnson, WY
Low Hazard 21 ftGreen Cabin
Sheridan, WY
Low Hazard 30 ftHenry
Johnson, WY
Low Hazard 30 ftRattlesnake No. 1
Johnson, WY
Low Hazard 30 ftGreen Cabin No. 3
Sheridan, WY
Low Hazard 27 ftPat
Johnson, WY
Low Hazard 36 ftDonaldson
Johnson, WY
Low Hazard 27 ftLittle Red No. 2
Sheridan, WY
Low Hazard 36 ftFrequently Asked Questions
What is the hazard classification of Big Donaldson?
Big Donaldson 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 Big Donaldson?
Big Donaldson is owned by WILLIAM & PAUL LANDECK (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Big Donaldson built?
Big Donaldson was completed in 1973, making it 53 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 Big Donaldson?
Big Donaldson serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Big Donaldson?
Big Donaldson has a dam height of 22 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 Big Donaldson last inspected?
Big Donaldson was last inspected on May 24, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.