Lower Robertson
Key Takeaway
Lower Robertson is classified as low hazard in New Hampshire. It was completed in 1905 and is 121 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 18 ft (taller than 63.5% in NH) |
| Dam Length | 349 ft |
| Dam Type | Timber Crib |
| Max Storage | 100 acre-ft |
| Normal Storage | 100 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 406 sq mi |
| Max Discharge | 10,200 cfs |
| Year Completed | 1905 (121 years old) |
| NID ID | NH00276 |
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
Private
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Low Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Lower Robertson?
Lower Robertson 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 Lower Robertson?
Lower Robertson is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Lower Robertson built?
Lower Robertson 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 Lower Robertson?
Lower Robertson 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 Lower Robertson?
Lower Robertson has a dam height of 18 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 Lower Robertson last inspected?
Lower Robertson was last inspected on September 18, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.