Maranacook Lake

Maranacook Lake is a concrete dam located in Kennebec County, Maine, built in 1820. It carries a Low hazard potential classification.

About Maranacook Lake

Maranacook Lake is a dam in Kennebec, Maine. The dam is owned by Winthrop/ Readfield (local government). It impounds the Mill Stream.

The dam stands 12 feet tall and stretches 95 feet across, creates a reservoir covering 1,673 acres, has a maximum storage capacity of 2,370 acre-feet, and collects water from a drainage area of 25 square miles. Completed in 1820, the structure is one of the older dams in the region, with over a century and a half of service.

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. The most recent inspection on record was 02/06/2017.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateMaine
CountyKennebec
River/StreamMill Stream
Coordinates44.30965, -69.97227

Physical Characteristics

Dam TypeConcrete
NID Height12 ft
Dam Height12 ft
Dam Length95 ft
Year Completed1820 (206 years old)

Storage & Hydraulics

NID Storage2,370 acre-ft
Max Storage2,370 acre-ft
Normal Storage2,070 acre-ft
Surface Area1,673 acres
Drainage Area25 sq mi

Ownership & Safety

PurposeOther
OwnerWinthrop/ Readfield
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection02/06/2017
Emergency Action PlanNot Required

Identifiers

NID IDME00099
Federal IDME00099
More InfoState Dam Safety Program

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