Lake Johnson City Dam
Key Takeaway
Lake Johnson City Dam is classified as low hazard in Texas. It was completed in 1967 and is 59 years old. Its primary use is water supply.
Physical Details
| Dam Height | 15 ft (taller than 15.4% in TX) |
| Dam Length | 590 ft |
| Dam Type | Buttress |
| Max Storage | 345 acre-ft |
| Normal Storage | 345 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 4,281 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | TX01569 |
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
CITY OF JOHNSON CITY
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Lake Johnson City Dam?
Lake Johnson City 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 Lake Johnson City Dam?
Lake Johnson City Dam is owned by CITY OF JOHNSON CITY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Johnson City Dam built?
Lake Johnson City Dam was completed in 1967, making it 59 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 Lake Johnson City Dam?
Lake Johnson City 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 Lake Johnson City Dam?
Lake Johnson City Dam has a dam height of 15 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 Lake Johnson City Dam last inspected?
Lake Johnson City Dam was last inspected on March 25, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.