Morristown Lake
Key Takeaway
Morristown Lake is classified as significant hazard in South Dakota. It was completed in 1938 and is 88 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 24 ft (taller than 53.3% in SD) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 2.0K acre-ft |
| Normal Storage | 848 acre-ft |
| Surface Area | 106 acres |
| Drainage Area | 19 sq mi |
| Max Discharge | 4,435 cfs |
| Year Completed | 1938 (88 years old) |
| Year Modified | 2001 |
| NID ID | SD00745 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
S&PL
State Government
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Low Hazard 17 ftFrequently Asked Questions
What is the hazard classification of Morristown Lake?
Morristown Lake is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Morristown Lake?
Morristown Lake is owned by S&PL (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Morristown Lake built?
Morristown Lake was completed in 1938, making it 88 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 Morristown Lake?
Morristown Lake 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 Morristown Lake?
Morristown Lake 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.
When was Morristown Lake last inspected?
Morristown Lake was last inspected on November 10, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.