Turtle Lake (Lower)
Key Takeaway
Turtle Lake (Lower) is classified as high hazard in Oklahoma. It was completed in 2003 and is 23 years old. Its primary use is other. 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 | 21 ft (taller than 17.7% in OK) |
| Dam Length | 280 ft |
| Max Storage | 94 acre-ft |
| Normal Storage | 58 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 118 sq mi |
| Max Discharge | 536 cfs |
| Year Completed | 2003 (23 years old) |
| NID ID | OK30153 |
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
DARRYL & PAMELA K UMPHRIES
Private
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Low Hazard 22 ftFrequently Asked Questions
What is the hazard classification of Turtle Lake (Lower)?
Turtle Lake (Lower) 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 Turtle Lake (Lower)?
Turtle Lake (Lower) is owned by DARRYL & PAMELA K UMPHRIES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Turtle Lake (Lower) built?
Turtle Lake (Lower) was completed in 2003, making it 23 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 Turtle Lake (Lower)?
Turtle Lake (Lower) 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 Turtle Lake (Lower)?
Turtle Lake (Lower) has a dam height of 21 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 Turtle Lake (Lower) last inspected?
Turtle Lake (Lower) was last inspected on September 4, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.