Tank Johnson Dam
Key Takeaway
Tank Johnson Dam is classified as low hazard in Texas. It was completed in 1925 and is 101 years old. Its primary use is recreation.
Physical Details
| Dam Height | 16 ft (taller than 19.7% in TX) |
| Dam Length | 345 ft |
| Dam Type | Earth |
| Max Storage | 87 acre-ft |
| Normal Storage | 8 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1925 (101 years old) |
| NID ID | TX03871 |
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
JOHN MAST
Private
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What is the hazard classification of Tank Johnson Dam?
Tank Johnson 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 Tank Johnson Dam?
Tank Johnson Dam is owned by JOHN MAST (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Tank Johnson Dam built?
Tank Johnson Dam was completed in 1925, making it 101 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 Tank Johnson Dam?
Tank Johnson 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 Tank Johnson Dam?
Tank Johnson 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.