Wolff Lake
Key Takeaway
Wolff Lake is classified as low hazard in South Dakota. It was completed in 1938 and is 88 years old. Its primary use is water supply.
Physical Details
| Dam Height | 20 ft (taller than 33.7% in SD) |
| Dam Length | 1,200 ft |
| Dam Type | Earth |
| Max Storage | 285 acre-ft |
| Normal Storage | 116 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2,628 cfs |
| Year Completed | 1938 (88 years old) |
| NID ID | SD00667 |
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
S&PL
State Government
Frequently Asked Questions
What is the hazard classification of Wolff Lake?
Wolff Lake 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 Wolff Lake?
Wolff Lake is owned by S&PL (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Wolff Lake built?
Wolff Lake was completed in 1938, making it 88 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 Wolff Lake?
Wolff Lake serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Wolff Lake?
Wolff Lake has a dam height of 20 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 Wolff Lake last inspected?
Wolff Lake was last inspected on May 31, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.