Stone Dam, also known as Quakish Lake Dam, is a concrete gravity dam located in Millinocket, Maine, along the West Branch Penobscot River.
Wind
Humidity
Built in 1900 for hydroelectric purposes, this dam stands at a height of 27 feet and stretches 1262 feet in length, with a storage capacity of 8100 acre-feet and a surface area of 1344 acres. With a maximum discharge of 109,000 cubic feet per second, it serves multiple purposes including flood risk reduction, navigation, and water supply, making it a vital infrastructure in the region.
Managed by the Federal Energy Regulatory Commission, Stone Dam has a high hazard potential and a very high risk assessment due to its age and condition assessment not being available. The dam features a controlled spillway with a width of 1086 feet and is equipped with a combination of one other controlled outlet and thirteen slide gates for water control. Despite not being state-regulated, this dam plays a crucial role in the local ecosystem, providing habitat for fish and wildlife while also serving as a recreational area for visitors to enjoy.
As an integral part of the water resource infrastructure in Penobscot County, Stone Dam stands as a testament to engineering ingenuity from the turn of the century. With its historical significance and multifaceted functionality, this dam continues to be a focal point for water resource and climate enthusiasts interested in the intersection of human development and environmental sustainability.
Year Completed |
1900 |
Dam Length |
1262 |
Dam Height |
27 |
River Or Stream |
West Branch Penobscot River |
Surface Area |
1344 |
Drainage Area |
1890 |
Nid Storage |
8100 |
Outlet Gates |
Other Controlled - 1, Slide (sluice gate) - 13 |
Hazard Potential |
High |
Nid Height |
27 |
East Branch Penobscot River At Grindstone
|
943cfs |
Mattawamkeag River Near Mattawamkeag
|
1130cfs |
Piscataquis River At Medford
|
880cfs |
Penobscot River At West Enfield
|
16000cfs |
Seboeis River Near Shin Pond
|
156cfs |
Piscataquis River Near Dover-Foxcroft
|
2180cfs |
| Location | Reservations | Toilets |
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Remote Site 5K
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Remote Site 5J
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Remote Site 4I
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Remote Sit 3G
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Remote Site 3H
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Remote Site 2F
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