Bonny Eagle, also known as the Main River Channel Dam, is a privately owned hydroelectric structure located in Hollis, Maine.
Wind
Humidity
Built in 1911 by J. G. White & Co., this concrete dam stands at a height of 67 feet and spans a length of 784 feet. It has a storage capacity of 2,320 acre-feet and serves multiple purposes including hydroelectric generation and recreation.
Managed by the Federal Energy Regulatory Commission, Bonny Eagle has a low hazard potential and a high risk assessment rating of 2. Despite being non-state regulated, the dam undergoes periodic inspections with a frequency of every 3 years. With a surface area of 347 acres and a drainage area of 1,563 square miles, the dam plays a crucial role in water resource management in the region.
Although lacking a spillway, Bonny Eagle is equipped with a flap outlet gate to control water flow. While its current condition assessment is not available, efforts have been made to prepare emergency action plans and assess risk management measures. With its historical significance and ongoing role in providing renewable energy, Bonny Eagle remains a vital component in the local water infrastructure and climate resilience efforts.
Year Completed |
1911 |
Dam Length |
784 |
Dam Height |
67 |
River Or Stream |
Saco River |
Primary Dam Type |
Concrete |
Surface Area |
347 |
Drainage Area |
1563 |
Nid Storage |
2320 |
Outlet Gates |
Flap - 1 |
Hazard Potential |
Low |
Nid Height |
67 |
Saco River At Cornish
|
1020cfs |
Presumpscot River At Westbrook
|
-999999cfs |
Mousam River Near West Kennebunk
|
44cfs |
Saco River Near Conway
|
315cfs |
Androscoggin River Near Auburn
|
2080cfs |
Cocheco River Near Rochester
|
24cfs |