Eel Weir
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Maine |
| County | Cumberland |
| Nearest City | South Windham |
| River/Stream | Presumpscot River |
| Coordinates | 43.83020, -70.45500 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,310 ft |
| Year Completed | 1879 (147 years old) |
Storage & Hydraulics
| NID Storage | 330,000 acre-ft |
| Max Storage | 330,000 acre-ft |
| Normal Storage | 330,000 acre-ft |
| Surface Area | 28,771 acres |
| Drainage Area | 441 sq mi |
| Max Discharge | 8,800 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Dichotomy Power Maine, LLC and Presumpcot Hydro, LLC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/16/2025 |
| Emergency Action Plan | Yes |