Collington Facility 9 Dam (Dunwood Crossing Dr)
Key Takeaway
Collington Facility 9 Dam (Dunwood Crossing Dr) is classified as significant hazard in Maryland. It was completed in 1990 and is 36 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 47.7% in MD) |
| Dam Length | 380 ft |
| Dam Type | Earth |
| Max Storage | 75 acre-ft |
| Normal Storage | 68 acre-ft |
| Surface Area | 0 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 247 cfs |
| Year Completed | 1990 (36 years old) |
| Year Modified | 1990 |
| NID ID | MD00511 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Prince Georges County
Local Government
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Low Hazard 15 ftFrequently Asked Questions
What is the hazard classification of Collington Facility 9 Dam (Dunwood Crossing Dr)?
Collington Facility 9 Dam (Dunwood Crossing Dr) is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Collington Facility 9 Dam (Dunwood Crossing Dr)?
Collington Facility 9 Dam (Dunwood Crossing Dr) is owned by Prince Georges County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Collington Facility 9 Dam (Dunwood Crossing Dr) built?
Collington Facility 9 Dam (Dunwood Crossing Dr) was completed in 1990, making it 36 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 Collington Facility 9 Dam (Dunwood Crossing Dr)?
Collington Facility 9 Dam (Dunwood Crossing Dr) serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Collington Facility 9 Dam (Dunwood Crossing Dr)?
Collington Facility 9 Dam (Dunwood Crossing Dr) 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 Collington Facility 9 Dam (Dunwood Crossing Dr) last inspected?
Collington Facility 9 Dam (Dunwood Crossing Dr) was last inspected on February 16, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.