Little Moreau #1
Key Takeaway
Little Moreau #1 is classified as low hazard in South Dakota. It was completed in 1933 and is 93 years old. Its primary use is recreation.
Physical Details
| Dam Height | 30 ft (taller than 85.2% in SD) |
| Dam Length | 662 ft |
| Dam Type | Earth |
| Max Storage | 507 acre-ft |
| Normal Storage | 211 acre-ft |
| Surface Area | 33 acres |
| Drainage Area | 51 sq mi |
| Max Discharge | 8,616 cfs |
| Year Completed | 1933 (93 years old) |
| NID ID | SD00015 |
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
GF&P
State Government
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Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Little Moreau #1?
Little Moreau #1 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 Little Moreau #1?
Little Moreau #1 is owned by GF&P (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Little Moreau #1 built?
Little Moreau #1 was completed in 1933, making it 93 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 Little Moreau #1?
Little Moreau #1 serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Little Moreau #1?
Little Moreau #1 has a dam height of 30 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 Little Moreau #1 last inspected?
Little Moreau #1 was last inspected on October 4, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.