Rocky Lake Outlet

Rocky Lake Outlet is a rockfill dam located in Washington County, Maine, built in 1966. It carries a Low hazard potential classification.

About Rocky Lake Outlet

The primary purpose of Rocky Lake Outlet is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Ifw/state Of Maine (state). It impounds the Rocky Lake.

The dam stands 5 feet tall and stretches 120 feet across, creates a reservoir covering 1,020 acres, has a maximum storage capacity of 10,243 acre-feet, and collects water from a drainage area of 16 square miles. Completed in 1966, the structure is well into its service life at over 50 years old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateMaine
CountyWashington
River/StreamRocky Lake
Coordinates44.77076, -67.26477

Physical Characteristics

Dam TypeRockfill
NID Height5 ft
Dam Height5 ft
Dam Length120 ft
Year Completed1966 (60 years old)

Storage & Hydraulics

NID Storage10,243 acre-ft
Max Storage10,243 acre-ft
Normal Storage5,378 acre-ft
Surface Area1,020 acres
Drainage Area16 sq mi

Ownership & Safety

PurposeFlood Risk Reduction
OwnerIFW/State of Maine
Owner TypeState
Hazard ClassificationLow
Condition AssessmentNot Rated
Emergency Action PlanNot Required

Identifiers

NID IDME00750
Federal IDME00399S001
More InfoState Dam Safety Program

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