Johnston S Dam
Key Takeaway
Johnston S Dam is classified as low hazard in Alabama. It was completed in 1973 and is 53 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 20 ft (taller than 59.3% in AL) |
| Dam Length | 800 ft |
| Dam Type | Earth |
| Max Storage | 92 acre-ft |
| Normal Storage | 69 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 210 cfs |
| Year Completed | 1973 (53 years old) |
| NID ID | AL00168 |
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
R R JOHNSTON
Private
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Low Hazard 17 ftFrequently Asked Questions
What is the hazard classification of Johnston S Dam?
Johnston S 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 Johnston S Dam?
Johnston S Dam is owned by R R JOHNSTON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johnston S Dam built?
Johnston S Dam was completed in 1973, making it 53 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 Johnston S Dam?
Johnston S Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Johnston S Dam?
Johnston S Dam has a dam height of 20 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.