Mahaney

Kennebago River· Franklin, Maine· Built 1932· Concrete· 15 ft tall
Low Hazard Hydroelectric Private

Key Takeaway

Mahaney is classified as low hazard in Maine. It was completed in 1932 and is 94 years old. Its primary use is hydroelectric.

Physical Details

Dam Height 15 ft (taller than 51.7% in ME)
Dam Length232 ft
Dam TypeConcrete
Max Storage8.5K acre-ft
Normal Storage8.5K acre-ft
Surface Area1,700 acres
Drainage Area112 sq mi
Max Discharge6,687 cfs
Year Completed1932 (94 years old)
NID IDME00028

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: August 13, 2019
State Regulated: No

Ownership

Kennebago Hydro Corporation, Inc.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mahaney?

Mahaney is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Mahaney?

Mahaney is owned by Kennebago Hydro Corporation, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mahaney built?

Mahaney was completed in 1932, making it 94 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Mahaney?

Mahaney serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Mahaney?

Mahaney has a dam height of 15 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Mahaney last inspected?

Mahaney was last inspected on August 13, 2019. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.