Lake Frank
Key Takeaway
Lake Frank is classified as high hazard in Maryland. It was completed in 1967 and is 59 years old. Its primary use is recreation. 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 | 78 ft (taller than 96.6% in MD) |
| Dam Length | 576 ft |
| Dam Type | Gravity |
| Max Storage | 7.9K acre-ft |
| Normal Storage | 785 acre-ft |
| Surface Area | 56 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 24,317 cfs |
| Year Completed | 1967 (59 years old) |
| Year Modified | 1967 |
| NID ID | MD00050 |
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
MNCPPC-Upper Rock Creek
Local Government
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High Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Lake Frank?
Lake Frank 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 Lake Frank?
Lake Frank is owned by MNCPPC-Upper Rock Creek (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lake Frank built?
Lake Frank was completed in 1967, making it 59 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 Lake Frank?
Lake Frank serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Lake Frank?
Lake Frank has a dam height of 78 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 Lake Frank last inspected?
Lake Frank was last inspected on May 6, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.