Mascoma Lake Dam
High HazardPoor ConditionEmergency Action Plan: Yes
Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | LEBANON |
| River/Stream | MASCOMA RIVER |
| Coordinates | 43.64830, -72.18220 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 575 ft |
| Year Completed | 1881 (145 years old) |
Storage & Hydraulics
| NID Storage | 18,300 acre-ft |
| Max Storage | 18,300 acre-ft |
| Normal Storage | 8,332 acre-ft |
| Surface Area | 1,155 acres |
| Drainage Area | 153 sq mi |
| Max Discharge | 17,255 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | NH DES WATER DIVISION |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 10/31/2022 |
| Emergency Action Plan | Yes |