Johnston Coy and Knight Harold
Key Takeaway
Johnston Coy and Knight Harold is classified as low hazard in Texas. It was completed in 1989 and is 37 years old. Its primary use is recreation.
Physical Details
| Dam Height | 22 ft (taller than 41.9% in TX) |
| Dam Length | 1,133 ft |
| Dam Type | Earth |
| Max Storage | 545 acre-ft |
| Normal Storage | 318 acre-ft |
| Surface Area | 53 acres |
| Drainage Area | 22 sq mi |
| Max Discharge | 6,364 cfs |
| Year Completed | 1989 (37 years old) |
| NID ID | TX06354 |
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
JOHNSTON COY AND KNIGHT HAROLD
Private
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Low Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Johnston Coy and Knight Harold?
Johnston Coy and Knight Harold 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 Coy and Knight Harold?
Johnston Coy and Knight Harold is owned by JOHNSTON COY AND KNIGHT HAROLD (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johnston Coy and Knight Harold built?
Johnston Coy and Knight Harold was completed in 1989, making it 37 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 Coy and Knight Harold?
Johnston Coy and Knight Harold 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 Johnston Coy and Knight Harold?
Johnston Coy and Knight Harold has a dam height of 22 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 Johnston Coy and Knight Harold last inspected?
Johnston Coy and Knight Harold was last inspected on January 26, 1990. Inspection dates indicate when a formal review occurred, not the results of that inspection.