Long Hollow Dam
Key Takeaway
Long Hollow Dam is classified as low hazard in South Dakota. It was completed in 1947 and is 79 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 24 ft (taller than 53.3% in SD) |
| Dam Length | 2,000 ft |
| Dam Type | Earth |
| Max Storage | 576 acre-ft |
| Normal Storage | 480 acre-ft |
| Max Discharge | 33,000 cfs |
| Year Completed | 1947 (79 years old) |
| NID ID | SD01033 |
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
LANDERS CATTLE CO.
Private
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Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Long Hollow Dam?
Long Hollow 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 Long Hollow Dam?
Long Hollow Dam is owned by LANDERS CATTLE CO. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Long Hollow Dam built?
Long Hollow Dam was completed in 1947, making it 79 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 Long Hollow Dam?
Long Hollow 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 Long Hollow Dam?
Long Hollow Dam has a dam height of 24 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.