Johns Pond Dam
Key Takeaway
Johns Pond Dam is classified as low hazard in Massachusetts. It was completed in 1950 and is 76 years old. Its primary use is recreation.
Physical Details
| Dam Height | 8 ft (taller than 6.7% in MA) |
| Dam Length | 10 ft |
| Dam Type | Earth |
| Max Storage | 1.4K acre-ft |
| Normal Storage | 680 acre-ft |
| Surface Area | 314 acres |
| Drainage Area | 210 sq mi |
| Year Completed | 1950 (76 years old) |
| NID ID | MA01040 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
TOWN OF MASHPEE, CONSERVATION COMMISSION
Local Government
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Low Hazard 7 ftFrequently Asked Questions
What is the hazard classification of Johns Pond Dam?
Johns Pond Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Johns Pond Dam?
Johns Pond Dam is owned by TOWN OF MASHPEE, CONSERVATION COMMISSION (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Johns Pond Dam built?
Johns Pond Dam was completed in 1950, making it 76 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 Johns Pond Dam?
Johns Pond Dam 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 Johns Pond Dam?
Johns Pond Dam has a dam height of 8 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 Johns Pond Dam last inspected?
Johns Pond Dam was last inspected on April 6, 2009. Inspection dates indicate when a formal review occurred, not the results of that inspection.