Garrett Dam
Key Takeaway
Garrett Dam is classified as low hazard in South Dakota. It was completed in 1980 and is 46 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 64 ft (taller than 99.3% in SD) |
| Dam Length | 600 ft |
| Dam Type | Earth |
| Max Storage | 5.0K acre-ft |
| Normal Storage | 1.1K acre-ft |
| Drainage Area | 12 sq mi |
| Max Discharge | 9,000 cfs |
| Year Completed | 1980 (46 years old) |
| NID ID | SD02357 |
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
MISSOURI RIVER INVESTMENTS
Private
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Low Hazard 60 ftFrequently Asked Questions
What is the hazard classification of Garrett Dam?
Garrett 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 Garrett Dam?
Garrett Dam is owned by MISSOURI RIVER INVESTMENTS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Garrett Dam built?
Garrett Dam was completed in 1980, making it 46 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 Garrett Dam?
Garrett Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Garrett Dam?
Garrett Dam has a dam height of 64 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 Garrett Dam last inspected?
Garrett Dam was last inspected on July 27, 1992. Inspection dates indicate when a formal review occurred, not the results of that inspection.