Hollis J.B.
Key Takeaway
Hollis J.B. is classified as low hazard in Oklahoma. It was completed in 1960 and is 66 years old. Its primary use is other.
Physical Details
| Dam Height | 35 ft (taller than 72.5% in OK) |
| Dam Length | 545 ft |
| Dam Type | Earth |
| Max Storage | 577 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 50 acres |
| Max Discharge | 2,790 cfs |
| Year Completed | 1960 (66 years old) |
| NID ID | OK10429 |
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
THOMAS H & KAREN C WALTERS
Private
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Hollis J.B.?
Hollis J.B. 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 Hollis J.B.?
Hollis J.B. is owned by THOMAS H & KAREN C WALTERS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hollis J.B. built?
Hollis J.B. was completed in 1960, making it 66 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 Hollis J.B.?
Hollis J.B. 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 Hollis J.B.?
Hollis J.B. 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 Hollis J.B. last inspected?
Hollis J.B. was last inspected on November 29, 2010. Inspection dates indicate when a formal review occurred, not the results of that inspection.