Johnson Lake Dam
Key Takeaway
Johnson Lake Dam is classified as low hazard in Texas. It was completed in 1963 and is 63 years old. Its primary use is water supply.
Physical Details
| Dam Height | 16 ft (taller than 19.7% in TX) |
| Dam Length | 1,040 ft |
| Dam Type | Earth |
| Max Storage | 211 acre-ft |
| Normal Storage | 36 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Year Completed | 1963 (63 years old) |
| NID ID | TX03839 |
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
HENRY ROSS
Private
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Low Hazard 43 ftFrequently Asked Questions
What is the hazard classification of Johnson Lake Dam?
Johnson Lake Dam 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 Johnson Lake Dam?
Johnson Lake Dam is owned by HENRY ROSS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johnson Lake Dam built?
Johnson Lake Dam was completed in 1963, making it 63 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 Johnson Lake Dam?
Johnson Lake 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 Johnson Lake Dam?
Johnson Lake Dam has a dam height of 16 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.