Mcindoes is a concrete dam located in Grafton County, New Hampshire, built in 1931. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 25 ft25 ft tall and 730 ft long, taller than 50% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Mcindoes
The primary purpose of Mcindoes is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Great River Hydro, LLC (private). It impounds the Connecticut River near East Ryegate, Vt.
The dam stands 25 feet tall and stretches 730 feet across, creates a reservoir covering 543 acres, has a maximum storage capacity of 4,800 acre-feet, and collects water from a drainage area of 2,200 square miles. Completed in 1931, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 06/08/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | East Ryegate, Vt |
| River/Stream | Connecticut River |
| Coordinates | 44.26000, -72.05970 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 730 ft |
| Year Completed | 1931 (95 years old) |
Storage & Hydraulics
| NID Storage | 4,800 acre-ft |
| Max Storage | 4,800 acre-ft |
| Normal Storage | 4,800 acre-ft |
| Surface Area | 543 acres |
| Drainage Area | 2,200 sq mi |
| Max Discharge | 138,500 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Great River Hydro, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/08/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NH00166 |
| Federal ID | NH00166 |
| More Info | State Dam Safety Program |