Tillie Lake Lower Dam
Key Takeaway
Tillie Lake Lower Dam is classified as high hazard in Texas. It was completed in 1958 and is 68 years old. Its primary use is water supply. 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 | 18 ft (taller than 25.8% in TX) |
| Dam Length | 1,500 ft |
| Dam Type | Earth |
| Max Storage | 117 acre-ft |
| Normal Storage | 46 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 575 cfs |
| Year Completed | 1958 (68 years old) |
| NID ID | TX02949 |
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
UNION PACIFIC RAILROAD COMPANY
Private
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Low Hazard 39 ftFrequently Asked Questions
What is the hazard classification of Tillie Lake Lower Dam?
Tillie Lake Lower 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 Tillie Lake Lower Dam?
Tillie Lake Lower Dam is owned by UNION PACIFIC RAILROAD COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Tillie Lake Lower Dam built?
Tillie Lake Lower Dam was completed in 1958, making it 68 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 Tillie Lake Lower Dam?
Tillie Lake Lower Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Tillie Lake Lower Dam?
Tillie Lake Lower Dam has a dam height of 18 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 Tillie Lake Lower Dam last inspected?
Tillie Lake Lower Dam was last inspected on March 28, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.