Okmulgee Lake
Key Takeaway
Okmulgee Lake is classified as high hazard in Oklahoma. It was completed in 1928 and is 98 years old. Its primary use is water supply. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 68 ft (taller than 98.4% in OK) |
| Dam Length | 2,080 ft |
| Dam Type | Earth |
| Max Storage | 25.9K acre-ft |
| Normal Storage | 14.2K acre-ft |
| Surface Area | 668 acres |
| Drainage Area | 39 sq mi |
| Max Discharge | 73,500 cfs |
| Year Completed | 1928 (98 years old) |
| NID ID | OK01362 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CITY OF OKMULGEE
Local Government
Nearby Dams
Sims W.M.
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Low Hazard 18 ftOknoname 111006
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Low Hazard 23 ftSCS-Okfuskee Tributaries Site-S1
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High Hazard 78 ftOknoname 111008
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Low Hazard 22 ftBeggs
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Low Hazard 20 ftOknoname 111082
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Low Hazard 26 ftSCS-Okmulgee Creek Site-2
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High Hazard 27 ftSCS-Okfuskee Tributaries Site-N02
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Low Hazard 33 ftFrequently Asked Questions
What is the hazard classification of Okmulgee Lake?
Okmulgee Lake is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Okmulgee Lake?
Okmulgee Lake is owned by CITY OF OKMULGEE (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Okmulgee Lake built?
Okmulgee Lake was completed in 1928, making it 98 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 Okmulgee Lake?
Okmulgee Lake 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 Okmulgee Lake?
Okmulgee Lake has a dam height of 68 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 Okmulgee Lake last inspected?
Okmulgee Lake was last inspected on August 18, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.