Squam Lake
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | Ashland |
| River/Stream | Squam River |
| Coordinates | 43.70559, -71.62942 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 200 ft |
| Year Completed | 1856 (170 years old) |
Storage & Hydraulics
| NID Storage | 39,600 acre-ft |
| Max Storage | 39,600 acre-ft |
| Normal Storage | 39,600 acre-ft |
| Surface Area | 7,173 acres |
| Drainage Area | 58 sq mi |
| Max Discharge | 1,470 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/14/2025 |
| Emergency Action Plan | Yes |