Rocky Lake

Rocky Lake· Washington, Maine· Built 1966· Timber Crib· 14 ft tall
Low Hazard Other State Government

Key Takeaway

Rocky Lake is classified as low hazard in Maine. It was completed in 1966 and is 60 years old. Its primary use is other.

Physical Details

Dam Height 14 ft (taller than 45.1% in ME)
Dam Length150 ft
Dam TypeTimber Crib
Max Storage9.3K acre-ft
Normal Storage4.2K acre-ft
Surface Area1,555 acres
Drainage Area0 sq mi
Year Completed1966 (60 years old)
NID IDME00399

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
State Regulated: Yes
Regulatory Agency: MEMA

Ownership

IFW/State of Maine

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Rocky Lake?

Rocky Lake 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 Rocky Lake?

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

When was Rocky Lake built?

Rocky Lake was completed in 1966, making it 60 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 Rocky Lake?

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

How tall is Rocky Lake?

Rocky Lake has a dam height of 14 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.

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.