Lemm Dam
Key Takeaway
Lemm Dam is classified as low hazard in South Dakota. It was completed in 1949 and is 77 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 20 ft (taller than 33.7% in SD) |
| Dam Length | 180 ft |
| Dam Type | Earth |
| Max Storage | 60 acre-ft |
| Normal Storage | 48 acre-ft |
| Max Discharge | 945 cfs |
| Year Completed | 1949 (77 years old) |
| NID ID | SD01196 |
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
VIC LEMM
Private
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Low Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Lemm Dam?
Lemm 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 Lemm Dam?
Lemm Dam is owned by VIC LEMM (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lemm Dam built?
Lemm Dam was completed in 1949, making it 77 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 Lemm Dam?
Lemm 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 Lemm Dam?
Lemm Dam has a dam height of 20 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.