Johnston J
Key Takeaway
Johnston J is classified as low hazard in Oklahoma. It was completed in 1965 and is 61 years old. Its primary use is other.
Physical Details
| Dam Height | 18 ft (taller than 7.5% in OK) |
| Dam Length | 250 ft |
| Dam Type | Earth |
| Max Storage | 53 acre-ft |
| Normal Storage | 21 acre-ft |
| Surface Area | 7 acres |
| Max Discharge | 802 cfs |
| Year Completed | 1965 (61 years old) |
| NID ID | OK12514 |
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
DON E & NINA E HASSELL
Private
Nearby Dams
Steele Ralph
Hughes, OK
Low Hazard 30 ftOsborn Grant
Hughes, OK
Low Hazard 25 ftSCS-Big Wewoka Creek Site-39
Hughes, OK
Low Hazard 39 ftSCS-Big Wewoka Creek Site-34
Hughes, OK
Low Hazard 30 ftOknoname 063015
Hughes, OK
Low Hazard 16 ftGreenlee Joe
Hughes, OK
Low Hazard 15 ftOknoname 063032
Hughes, OK
Low Hazard 15 ftSCS-Big Wewoka Creek Site-40
Hughes, OK
Low Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Johnston J?
Johnston J 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 J?
Johnston J is owned by DON E & NINA E HASSELL (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johnston J built?
Johnston J was completed in 1965, making it 61 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 J?
Johnston J serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Johnston J?
Johnston J has a dam height of 18 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 J last inspected?
Johnston J was last inspected on August 8, 2011. Inspection dates indicate when a formal review occurred, not the results of that inspection.