Mascoma Lake Dam

High HazardPoor ConditionEmergency Action Plan: Yes

Location

StateNew Hampshire
CountyGrafton
Nearest CityLEBANON
River/StreamMASCOMA RIVER
Coordinates43.64830, -72.18220

Physical Characteristics

Dam TypeConcrete
NID Height18 ft
Dam Height18 ft
Dam Length575 ft
Year Completed1881 (145 years old)

Storage & Hydraulics

NID Storage18,300 acre-ft
Max Storage18,300 acre-ft
Normal Storage8,332 acre-ft
Surface Area1,155 acres
Drainage Area153 sq mi
Max Discharge17,255 cfs

Ownership & Safety

PurposeRecreation
OwnerNH DES WATER DIVISION
Owner TypeState
Hazard ClassificationHigh
Condition AssessmentPoor
Last Inspection10/31/2022
Emergency Action PlanYes

Identifiers

NID IDNH00153
Federal IDNH00153
More InfoState Dam Safety Program

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