Trigg Lake Dam
Key Takeaway
Trigg Lake Dam is classified as high hazard in Texas. It was completed in 1982 and is 44 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 46 ft (taller than 90.9% in TX) |
| Dam Length | 1,200 ft |
| Dam Type | Earth |
| Max Storage | 1.0K acre-ft |
| Normal Storage | 270 acre-ft |
| Surface Area | 41 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 9,944 cfs |
| Year Completed | 1982 (44 years old) |
| NID ID | TX05801 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
DALLAS-FT WORTH INTERNATIONAL AIRPORT BOARD
Local Government
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Significant Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Trigg Lake Dam?
Trigg Lake Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Trigg Lake Dam?
Trigg Lake Dam is owned by DALLAS-FT WORTH INTERNATIONAL AIRPORT BOARD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Trigg Lake Dam built?
Trigg Lake Dam was completed in 1982, making it 44 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 Trigg Lake Dam?
Trigg Lake Dam serves the following purposes: Irrigation, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Trigg Lake Dam?
Trigg Lake Dam has a dam height of 46 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 Trigg Lake Dam last inspected?
Trigg Lake Dam was last inspected on July 29, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.