Cobble Mountain Dam
Key Takeaway
Cobble Mountain Dam is classified as low hazard in New Hampshire. It was completed in 1986 and is 40 years old. Its primary use is recreation.
Physical Details
| Dam Height | 19 ft (taller than 68% in NH) |
| Dam Length | 90 ft |
| Dam Type | Earth |
| Max Storage | 224 acre-ft |
| Normal Storage | 51 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 3 sq mi |
| Year Completed | 1986 (40 years old) |
| Year Modified | 2000 |
| NID ID | NH00992 |
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
GUNSTOCK AREA COMMISSION
Local Government
Nearby Dams
Gillan Pond Dam
Belknap, NH
Low Hazard 10 ftPheasant Ridge Cc Pond Dam
Belknap, NH
Significant Hazard 25 ftSunset Lake Dam
Belknap, NH
High Hazard 17 ftSawyer Lake Dam
Belknap, NH
High Hazard 19 ftLakeport
Belknap, NH
Significant Hazard 10 ftAvery
Belknap, NH
Low Hazard 13 ftBadger Brook Nh-107 Embankment Dam
Belknap, NH
Unknown 48 ftCrystal Lake Dam
Belknap, NH
High Hazard 16 ftFrequently Asked Questions
What is the hazard classification of Cobble Mountain Dam?
Cobble Mountain Dam 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 Cobble Mountain Dam?
Cobble Mountain Dam is owned by GUNSTOCK AREA COMMISSION (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Cobble Mountain Dam built?
Cobble Mountain Dam was completed in 1986, making it 40 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 Cobble Mountain Dam?
Cobble Mountain Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Cobble Mountain Dam?
Cobble Mountain Dam has a dam height of 19 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 Cobble Mountain Dam last inspected?
Cobble Mountain Dam was last inspected on August 22, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.