T. Howard Duckett Dam
Key Takeaway
T. Howard Duckett Dam is classified as high hazard in Maryland. It was completed in 1953 and is 73 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 | 139 ft (taller than 98.8% in MD) |
| Dam Length | 1,965 ft |
| Dam Type | Buttress |
| Max Storage | 59.0K acre-ft |
| Normal Storage | 17.0K acre-ft |
| Surface Area | 773 acres |
| Drainage Area | 132 sq mi |
| Max Discharge | 108,526 cfs |
| Year Completed | 1953 (73 years old) |
| NID ID | MD00020 |
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
Washington Suburban Sanitary Commission
Local Government
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Significant Hazard 17 ftFrequently Asked Questions
What is the hazard classification of T. Howard Duckett Dam?
T. Howard Duckett Dam 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 T. Howard Duckett Dam?
T. Howard Duckett Dam is owned by Washington Suburban Sanitary Commission (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was T. Howard Duckett Dam built?
T. Howard Duckett Dam was completed in 1953, making it 73 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 T. Howard Duckett Dam?
T. Howard Duckett Dam serves the following purposes: Water Supply, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is T. Howard Duckett Dam?
T. Howard Duckett Dam has a dam height of 139 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 T. Howard Duckett Dam last inspected?
T. Howard Duckett Dam was last inspected on May 10, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.