Black Hills Power & Light First Enlargement
Key Takeaway
Black Hills Power & Light First Enlargement is classified as low hazard in Wyoming. It was completed in 1940 and is 86 years old. Its primary use is other.
Physical Details
| Dam Height | 27 ft (taller than 50.7% in WY) |
| Dam Length | 700 ft |
| Dam Type | Earth |
| Normal Storage | 195 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1940 (86 years old) |
| Year Modified | 1978 |
| NID ID | WY01520 |
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
BLACK HILLS POWER AND LIGHT
Public Utility
Nearby Dams
Turner Reservoir
Weston, WY
Significant Hazard 27 ftGeier Irrigation Reservoir
Weston, WY
Low Hazard 38 ftUpton-Osage No. F.S. 9-498-33
Weston, WY
Low Hazard 24 ftBig Delaney
Weston, WY
Low Hazard 25 ftV. E. Lissolo Irrigation
Weston, WY
Low Hazard 30 ftEast Iron Creek Dam
Weston, WY
Low Hazard 24 ftPissolio No. 1
Weston, WY
Low Hazard 45 ftMartens 9-368-1
Weston, WY
Low Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Black Hills Power & Light First Enlargement?
Black Hills Power & Light First Enlargement 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 Black Hills Power & Light First Enlargement?
Black Hills Power & Light First Enlargement is owned by BLACK HILLS POWER AND LIGHT (Public Utility). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Black Hills Power & Light First Enlargement built?
Black Hills Power & Light First Enlargement 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 Black Hills Power & Light First Enlargement?
Black Hills Power & Light First Enlargement serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Black Hills Power & Light First Enlargement?
Black Hills Power & Light First Enlargement has a dam height of 27 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 Black Hills Power & Light First Enlargement last inspected?
Black Hills Power & Light First Enlargement was last inspected on April 29, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.