Gilman Mill
Gilman Mill is a concrete dam located in Penobscot County, Maine, built in 1963. It carries a Low hazard potential classification.
About Gilman Mill
The primary purpose of Gilman Mill is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Kenneth Robertson (private). It impounds the Blackman Stream.
The dam stands 15 feet tall and stretches 250 feet across, creates a reservoir covering 20 acres, and has a maximum storage capacity of 86 acre-feet. Completed in 1963, the structure is well into its service life at over 50 years old.
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. The most recent inspection on record was 04/08/2011. That was over 14 years ago.
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Location
| State | Maine |
| County | Penobscot |
| River/Stream | Blackman Stream |
| Coordinates | 44.88760, -68.64693 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 250 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 86 acre-ft |
| Max Storage | 86 acre-ft |
| Normal Storage | 52 acre-ft |
| Surface Area | 20 acres |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Kenneth Robertson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 04/08/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ME00577 |
| Federal ID | ME00577 |
| More Info | State Dam Safety Program |