Mirror Lake
Key Takeaway
Mirror Lake is classified as low hazard in Louisiana. It was completed in 1938 and is 88 years old. Its primary use is recreation.
Physical Details
| Dam Height | 9 ft (taller than 6.5% in LA) |
| Dam Length | 486 ft |
| Dam Type | Earth |
| Max Storage | 105 acre-ft |
| Normal Storage | 75 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 803 cfs |
| Year Completed | 1938 (88 years old) |
| NID ID | LA00159 |
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
Marietta and Warren Trust
Private
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Low Hazard 20 ftFrequently Asked Questions
What is the hazard classification of Mirror Lake?
Mirror Lake 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 Mirror Lake?
Mirror Lake is owned by Marietta and Warren Trust (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mirror Lake built?
Mirror 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 Mirror Lake?
Mirror 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 Mirror Lake?
Mirror Lake has a dam height of 9 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 Mirror Lake last inspected?
Mirror Lake was last inspected on August 25, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.