Happy Hollow Pond
Key Takeaway
Happy Hollow Pond is classified as significant hazard in Rhode Island. It was completed in 1885 and is 141 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 15 ft (taller than 66.7% in RI) |
| Dam Length | 130 ft |
| Dam Type | Masonry |
| Max Storage | 360 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 28 sq mi |
| Max Discharge | 2,000 cfs |
| Year Completed | 1885 (141 years old) |
| NID ID | RI00806 |
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
PAWTUCKET WATER SUPPLY BOARD
Local Government
Nearby Dams
Valley Falls
Providence, RI
Low Hazard 31 ftRobin Hollow Pond
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Significant Hazard 13 ftCentral Falls
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Low Hazard 14 ftPawtucket Upper
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Low Hazard 15 ftPawtucket Lower
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Significant Hazard 4 ftBleachery Pond
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High Hazard 8 ftPratt
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Low Hazard 12 ftBarney Pond
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High Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Happy Hollow Pond?
Happy Hollow Pond 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 Happy Hollow Pond?
Happy Hollow Pond is owned by PAWTUCKET WATER SUPPLY BOARD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Happy Hollow Pond built?
Happy Hollow Pond was completed in 1885, making it 141 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 Happy Hollow Pond?
Happy Hollow Pond 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 Happy Hollow Pond?
Happy Hollow Pond has a dam height of 15 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 Happy Hollow Pond last inspected?
Happy Hollow Pond was last inspected on July 14, 2012. Inspection dates indicate when a formal review occurred, not the results of that inspection.