Deiss Dam
Key Takeaway
Deiss Dam is classified as low hazard in South Dakota. It was completed in 1935 and is 91 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 25 ft (taller than 57.4% in SD) |
| Dam Length | 300 ft |
| Dam Type | Earth |
| Max Storage | 190 acre-ft |
| Normal Storage | 120 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 880 cfs |
| Year Completed | 1935 (91 years old) |
| Year Modified | 1999 |
| NID ID | SD02446 |
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
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Deiss Dam?
Deiss Dam 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 Deiss Dam?
Deiss Dam is owned by S&PL (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Deiss Dam built?
Deiss Dam was completed in 1935, making it 91 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 Deiss Dam?
Deiss Dam 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 Deiss Dam?
Deiss Dam has a dam height of 25 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.