May Dam
Key Takeaway
May 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 | 400 ft |
| Dam Type | Earth |
| Max Storage | 125 acre-ft |
| Normal Storage | 75 acre-ft |
| Max Discharge | 1,500 cfs |
| Year Completed | 1947 (79 years old) |
| NID ID | SD02133 |
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
MAY & SONS INC.
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of May Dam?
May 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 May Dam?
May Dam is owned by MAY & SONS INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was May Dam built?
May 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 May Dam?
May 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 May Dam?
May 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.