Cambridge Reservoir Dam
Key Takeaway
Cambridge Reservoir Dam is classified as high hazard in Massachusetts. It was completed in 1897 and is 129 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 | 31 ft (taller than 88% in MA) |
| Dam Length | 1,650 ft |
| Dam Type | Earth |
| Max Storage | 10.4K acre-ft |
| Normal Storage | 7.4K acre-ft |
| Surface Area | 450 acres |
| Drainage Area | 7 sq mi |
| Year Completed | 1897 (129 years old) |
| NID ID | MA00750 |
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
CITY OF CAMBRIDGE, WATER DEPARTMENT
Local Government
Nearby Dams
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Low Hazard 8 ftFrequently Asked Questions
What is the hazard classification of Cambridge Reservoir Dam?
Cambridge Reservoir 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 Cambridge Reservoir Dam?
Cambridge Reservoir Dam is owned by CITY OF CAMBRIDGE, WATER DEPARTMENT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cambridge Reservoir Dam built?
Cambridge Reservoir Dam was completed in 1897, making it 129 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 Cambridge Reservoir Dam?
Cambridge Reservoir Dam 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 Cambridge Reservoir Dam?
Cambridge Reservoir Dam has a dam height of 31 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 Cambridge Reservoir Dam last inspected?
Cambridge Reservoir Dam was last inspected on August 24, 2016. Inspection dates indicate when a formal review occurred, not the results of that inspection.