Collins Mills

Cobbosseecontee Stream· Kennebec, Maine· Built 1830· Concrete· 15 ft tall

Key Takeaway

Collins Mills is classified as low hazard in Maine. It was completed in 1830 and is 196 years old. Its primary use is fire protection.

Physical Details

Dam Height 15 ft (taller than 51.7% in ME)
Dam Length200 ft
Dam TypeConcrete
Max Storage756 acre-ft
Normal Storage400 acre-ft
Surface Area71 acres
Drainage Area0 sq mi
Year Completed1830 (196 years old)
Year Modified1974
NID IDME00463

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: October 9, 2019
State Regulated: Yes
Regulatory Agency: MEMA

Ownership

West Gardiner

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Collins Mills?

Collins Mills 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 Collins Mills?

Collins Mills is owned by West Gardiner (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Collins Mills built?

Collins Mills was completed in 1830, making it 196 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 Collins Mills?

Collins Mills serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Other, 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 Collins Mills?

Collins Mills 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 Collins Mills last inspected?

Collins Mills was last inspected on October 9, 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.