Mill Stream

Mill Stream· Somerset, Maine· Built 1900· Stone· 27 ft tall

Key Takeaway

Mill Stream is classified as low hazard in Maine. It was completed in 1900 and is 126 years old. Its primary use is hydroelectric.

Physical Details

Dam Height 27 ft (taller than 85.7% in ME)
Dam Length113 ft
Dam TypeStone
Max Storage660 acre-ft
Normal Storage540 acre-ft
Surface Area50 acres
Drainage Area0 sq mi
Year Completed1900 (126 years old)
NID IDME00420

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: November 5, 1980
State Regulated: Yes
Regulatory Agency: MEMA

Ownership

Norridgewock

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mill Stream?

Mill Stream 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 Mill Stream?

Mill Stream is owned by Norridgewock (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mill Stream built?

Mill Stream was completed in 1900, making it 126 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 Mill Stream?

Mill Stream serves the following purposes: Hydroelectric, Fire Protection, Stock, Or Small Fish Pond, Fish And Wildlife Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Mill Stream?

Mill Stream has a dam height of 27 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 Mill Stream last inspected?

Mill Stream was last inspected on November 5, 1980. 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.