Ragged Lake
Ragged Lake is an earth dam located in Piscataquis County, Maine, built in 1937. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Ragged Lake
The primary purpose of Ragged Lake is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. It impounds the Ragged Stream near Millinocket.
The dam stands 30 feet tall and stretches 1,193 feet across, creates a reservoir covering 2,786 acres, has a maximum storage capacity of 30,490 acre-feet, and collects water from a drainage area of 40 square miles. Completed in 1937, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/11/2018.
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Location
| State | Maine |
| County | Piscataquis |
| Nearest City | Millinocket |
| River/Stream | Ragged Stream |
| Coordinates | 45.78640, -69.33260 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 1,193 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 30,490 acre-ft |
| Max Storage | 30,490 acre-ft |
| Normal Storage | 30,490 acre-ft |
| Surface Area | 2,786 acres |
| Drainage Area | 40 sq mi |
| Max Discharge | 6,680 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/11/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ME00209 |
| Federal ID | ME00209 |
| More Info | State Dam Safety Program |