Loch Mcwilliams Dam
Key Takeaway
Loch Mcwilliams Dam is classified as significant hazard in Louisiana. It was completed in 1983 and is 43 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 75% in LA) |
| Dam Length | 1,107 ft |
| Dam Type | Earth |
| Max Storage | 700 acre-ft |
| Normal Storage | 530 acre-ft |
| Surface Area | 59 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,950 cfs |
| Year Completed | 1983 (43 years old) |
| Year Modified | 2012 |
| NID ID | LA00599 |
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
The Highlands Homeowners Association of St. Tammany, Inc.
Private
Nearby Dams
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Low Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Loch Mcwilliams Dam?
Loch Mcwilliams Dam 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 Loch Mcwilliams Dam?
Loch Mcwilliams Dam is owned by The Highlands Homeowners Association of St. Tammany, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Loch Mcwilliams Dam built?
Loch Mcwilliams Dam was completed in 1983, making it 43 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 Loch Mcwilliams Dam?
Loch Mcwilliams Dam 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 Loch Mcwilliams Dam?
Loch Mcwilliams 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.
When was Loch Mcwilliams Dam last inspected?
Loch Mcwilliams Dam was last inspected on September 20, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.