New Mills
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | Maine |
| County | Kennebec |
| Nearest City | Gardiner |
| River/Stream | Cobbosseecontee |
| Coordinates | 44.22000, -69.79000 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 200 ft |
| Year Completed | 1885 (141 years old) |
Storage & Hydraulics
| NID Storage | 4,650 acre-ft |
| Max Storage | 4,650 acre-ft |
| Normal Storage | 2,850 acre-ft |
| Surface Area | 856 acres |
| Drainage Area | 217 sq mi |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Gardiner;Litchfield;Richmond |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 07/09/2025 |
| Emergency Action Plan | Yes |