Coomer Lake
Key Takeaway
Coomer Lake is classified as significant hazard in Rhode Island. It was completed in 1885 and is 141 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 9 ft (taller than 24.3% in RI) |
| Dam Length | 330 ft |
| Dam Type | Rockfill |
| Max Storage | 510 acre-ft |
| Normal Storage | 383 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 800 cfs |
| Year Completed | 1885 (141 years old) |
| NID ID | RI01305 |
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
PROVIDENCE WATER SUPPLY BOARD/CITY OF PROVIDENCE
Local Government
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Significant Hazard 11 ftFrequently Asked Questions
What is the hazard classification of Coomer Lake?
Coomer Lake 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 Coomer Lake?
Coomer Lake is owned by PROVIDENCE WATER SUPPLY BOARD/CITY OF PROVIDENCE (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Coomer Lake built?
Coomer Lake 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 Coomer Lake?
Coomer Lake serves the following purposes: Recreation, Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Coomer Lake?
Coomer Lake has a dam height of 9 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 Coomer Lake last inspected?
Coomer Lake was last inspected on October 18, 2014. Inspection dates indicate when a formal review occurred, not the results of that inspection.