Larsen Irrigation Dam
Key Takeaway
Larsen Irrigation Dam is classified as low hazard in South Dakota. It was completed in 1978 and is 48 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 25 ft (taller than 57.4% in SD) |
| Dam Length | 962 ft |
| Dam Type | Earth |
| Max Storage | 108 acre-ft |
| Normal Storage | 72 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 675 cfs |
| Year Completed | 1978 (48 years old) |
| NID ID | SD02474 |
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
LARRY LARSEN
Private
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Low Hazard 28 ftFrequently Asked Questions
What is the hazard classification of Larsen Irrigation Dam?
Larsen Irrigation 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 Larsen Irrigation Dam?
Larsen Irrigation Dam is owned by LARRY LARSEN (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Larsen Irrigation Dam built?
Larsen Irrigation Dam was completed in 1978, making it 48 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 Larsen Irrigation Dam?
Larsen Irrigation Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Larsen Irrigation Dam?
Larsen Irrigation 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.