Nelson Merrill J.
Key Takeaway
Nelson Merrill J. is classified as low hazard in Oklahoma. It was completed in 1940 and is 86 years old. Its primary use is other.
Physical Details
| Dam Height | 18 ft (taller than 7.5% in OK) |
| Dam Length | 530 ft |
| Dam Type | Earth |
| Max Storage | 50 acre-ft |
| Normal Storage | 25 acre-ft |
| Surface Area | 3 acres |
| Max Discharge | 1,280 cfs |
| Year Completed | 1940 (86 years old) |
| NID ID | OK12602 |
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
LELAND F. ROBERTSON
Private
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Low Hazard 21 ftFrequently Asked Questions
What is the hazard classification of Nelson Merrill J.?
Nelson Merrill 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 Nelson Merrill J.?
Nelson Merrill J. is owned by LELAND F. ROBERTSON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Nelson Merrill J. built?
Nelson Merrill J. was completed in 1940, making it 86 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 Nelson Merrill J.?
Nelson Merrill 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 Nelson Merrill J.?
Nelson Merrill 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 Nelson Merrill J. last inspected?
Nelson Merrill J. was last inspected on August 12, 2011. Inspection dates indicate when a formal review occurred, not the results of that inspection.