Alton Power Dam
High HazardPoor ConditionEmergency Action Plan: Yes
Location
| State | New Hampshire |
| County | Belknap |
| Nearest City | ALTON |
| River/Stream | MERRYMEETING RIVER |
| Coordinates | 43.45770, -71.23080 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 190 ft |
| Year Completed | 1923 (103 years old) |
Storage & Hydraulics
| NID Storage | 3,392 acre-ft |
| Max Storage | 3,392 acre-ft |
| Normal Storage | 1,235 acre-ft |
| Surface Area | 719 acres |
| Drainage Area | 35 sq mi |
| Max Discharge | 3,900 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | NH FISH AND GAME DEPARTMENT |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 04/26/2022 |
| Emergency Action Plan | Yes |