Mountain Valley Lake No 3 Dam
Key Takeaway
Mountain Valley Lake No 3 Dam is classified as high hazard in Texas. It was completed in 1960 and is 66 years old. 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 | 14 ft (taller than 12.5% in TX) |
| Dam Length | 650 ft |
| Dam Type | Earth |
| Max Storage | 35 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1960 (66 years old) |
| NID ID | TX09005 |
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
JOHNSON COUNTY PUBLIC WORKS;PARAMOUNT PLACE INC
Private
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High Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Mountain Valley Lake No 3 Dam?
Mountain Valley Lake No 3 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 Mountain Valley Lake No 3 Dam?
Mountain Valley Lake No 3 Dam is owned by JOHNSON COUNTY PUBLIC WORKS;PARAMOUNT PLACE INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mountain Valley Lake No 3 Dam built?
Mountain Valley Lake No 3 Dam was completed in 1960, making it 66 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
How tall is Mountain Valley Lake No 3 Dam?
Mountain Valley Lake No 3 Dam has a dam height of 14 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 Mountain Valley Lake No 3 Dam last inspected?
Mountain Valley Lake No 3 Dam was last inspected on January 30, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.