Mercer Bog

Bog Stream· Somerset, Maine· Built 1850· Concrete· 27 ft tall
Low Hazard Recreation Fish And Wildlife Pond State Government

Key Takeaway

Mercer Bog is classified as low hazard in Maine. It was completed in 1850 and is 176 years old. Its primary use is recreation.

Physical Details

Dam Height 27 ft (taller than 85.7% in ME)
Dam Length132 ft
Dam TypeConcrete
Max Storage951 acre-ft
Normal Storage951 acre-ft
Surface Area317 acres
Drainage Area0 sq mi
Year Completed1850 (176 years old)
Year Modified1994
NID IDME00729

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: June 6, 2019
State Regulated: Yes
Regulatory Agency: MEMA

Ownership

IFW/State of Maine

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mercer Bog?

Mercer Bog 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 Mercer Bog?

Mercer Bog is owned by IFW/State of Maine (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mercer Bog built?

Mercer Bog was completed in 1850, making it 176 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 Mercer Bog?

Mercer Bog serves the following purposes: Recreation, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Mercer Bog?

Mercer Bog 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 Mercer Bog last inspected?

Mercer Bog was last inspected on June 6, 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.