Captain Johnson Reservoir Dam
Key Takeaway
Captain Johnson Reservoir Dam is classified as low hazard in Nevada. It was completed in 1911 and is 115 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 35 ft (taller than 67.4% in NV) |
| Dam Length | 120 ft |
| Dam Type | Earth |
| Max Storage | 1.3K acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 190 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1 cfs |
| Year Completed | 1911 (115 years old) |
| NID ID | NV00010 |
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
USDI BUREAU OF LAND MANAGEMENT
Federal Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Captain Johnson Reservoir Dam?
Captain Johnson Reservoir 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 Captain Johnson Reservoir Dam?
Captain Johnson Reservoir Dam is owned by USDI BUREAU OF LAND MANAGEMENT (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Captain Johnson Reservoir Dam built?
Captain Johnson Reservoir Dam was completed in 1911, making it 115 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 Captain Johnson Reservoir Dam?
Captain Johnson Reservoir Dam serves the following purposes: Irrigation, Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Captain Johnson Reservoir Dam?
Captain Johnson Reservoir Dam has a dam height of 35 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 Captain Johnson Reservoir Dam last inspected?
Captain Johnson Reservoir Dam was last inspected on August 16, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.