Lake Kanasatka Dam is an earth dam located in Carroll County, New Hampshire, built in 1928. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 17 ft17 ft tall and 240 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Lake Kanasatka Dam
The primary purpose of Lake Kanasatka Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Nh Des Water Division (state). It impounds the Tr Lake Winnipesaukee near Moultonborough.
The dam stands 17 feet tall and stretches 240 feet across, creates a reservoir covering 392 acres, has a maximum storage capacity of 5,640 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1928, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 08/17/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Hampshire |
| County | Carroll |
| Nearest City | Moultonborough |
| River/Stream | Tr Lake Winnipesaukee |
| Coordinates | 43.71520, -71.44550 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 240 ft |
| Year Completed | 1928 (98 years old) |
Storage & Hydraulics
| NID Storage | 5,640 acre-ft |
| Max Storage | 5,640 acre-ft |
| Normal Storage | 1,620 acre-ft |
| Surface Area | 392 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 703 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Nh Des Water Division |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 08/17/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NH00125 |
| Federal ID | NH00125 |
| More Info | State Dam Safety Program |