Sandy Hook
Key Takeaway
Sandy Hook is classified as low hazard in Connecticut. It was completed in 1905 and is 121 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 35 ft (taller than 91.3% in CT) |
| Dam Length | 130 ft |
| Dam Type | Gravity |
| Max Storage | 60 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 25 sq mi |
| Max Discharge | 4,280 cfs |
| Year Completed | 1905 (121 years old) |
| NID ID | CT00310 |
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
Sandy Hook Hydro LLC
Private
Nearby Dams
Lower Rocky Glen Dam
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Significant Hazard 18 ftWalnut Hill Pond Dam
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High Hazard 138 ftCurtis Pond Dam
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Significant Hazard 15 ftSmall Pond Dam
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Significant Hazard 12 ftMurphy Pond Dam
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Significant Hazard 13 ftPomperaug River Dam
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Significant Hazard 8 ftWarner Pond Dam
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Significant Hazard 10 ftFrequently Asked Questions
What is the hazard classification of Sandy Hook?
Sandy Hook 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 Sandy Hook?
Sandy Hook is owned by Sandy Hook Hydro LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Sandy Hook built?
Sandy Hook was completed in 1905, making it 121 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 Sandy Hook?
Sandy Hook serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Sandy Hook?
Sandy Hook has a dam height of 35 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 Sandy Hook last inspected?
Sandy Hook was last inspected on June 10, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.