Hillen Road Water Supply Tank
Key Takeaway
Hillen Road Water Supply Tank is classified as high hazard in Maryland. It was completed in 1920 and is 106 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 | 36 ft (taller than 81.5% in MD) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Max Storage | 84 acre-ft |
| Normal Storage | 64 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 42 cfs |
| Year Completed | 1920 (106 years old) |
| Year Modified | 2012 |
| NID ID | MD00321 |
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
Baltimore City DPW Reservoir Section
Local Government
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High Hazard 42 ftFrequently Asked Questions
What is the hazard classification of Hillen Road Water Supply Tank?
Hillen Road Water Supply Tank 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 Hillen Road Water Supply Tank?
Hillen Road Water Supply Tank is owned by Baltimore City DPW Reservoir Section (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hillen Road Water Supply Tank built?
Hillen Road Water Supply Tank was completed in 1920, making it 106 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 Hillen Road Water Supply Tank?
Hillen Road Water Supply Tank 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 Hillen Road Water Supply Tank?
Hillen Road Water Supply Tank has a dam height of 36 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 Hillen Road Water Supply Tank last inspected?
Hillen Road Water Supply Tank was last inspected on December 8, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.