Errol
Key Takeaway
Errol is classified as low hazard in New Hampshire. It was completed in 1887 and is 139 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 25 ft (taller than 80.2% in NH) |
| Dam Length | 205 ft |
| Dam Type | Other |
| Max Storage | 80.0K acre-ft |
| Normal Storage | 80.0K acre-ft |
| Surface Area | 7,850 acres |
| Drainage Area | 1,045 sq mi |
| Max Discharge | 19,700 cfs |
| Year Completed | 1887 (139 years old) |
| NID ID | NH00161 |
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
Not Listed
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Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Errol?
Errol 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 Errol?
Errol is owned by information not available (Not Listed). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Errol built?
Errol was completed in 1887, making it 139 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 Errol?
Errol 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 Errol?
Errol has a dam height of 25 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 Errol last inspected?
Errol was last inspected on August 7, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.