Tolman

Oyster River· Knox, Maine· Built 1967· Concrete· 20 ft tall

Key Takeaway

Tolman is classified as significant hazard in Maine. It was completed in 1967 and is 59 years old. Its primary use is fire protection. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 20 ft (taller than 74.1% in ME)
Dam Length250 ft
Dam TypeConcrete
Max Storage160 acre-ft
Normal Storage128 acre-ft
Surface Area38 acres
Drainage Area0 sq mi
Year Completed1967 (59 years old)
NID IDME00023

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: Yes
Last Inspection: December 1, 2020
State Regulated: Yes
Regulatory Agency: MEMA

Ownership

Tolman Park Association

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Tolman?

Tolman is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Tolman?

Tolman is owned by Tolman Park Association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Tolman built?

Tolman was completed in 1967, making it 59 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 Tolman?

Tolman 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 Tolman?

Tolman has a dam height of 20 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 Tolman last inspected?

Tolman was last inspected on December 1, 2020. 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.