Alton Power Dam

High HazardPoor ConditionEmergency Action Plan: Yes

Location

StateNew Hampshire
CountyBelknap
Nearest CityALTON
River/StreamMERRYMEETING RIVER
Coordinates43.45770, -71.23080

Physical Characteristics

Dam TypeConcrete
NID Height16 ft
Dam Height16 ft
Dam Length190 ft
Year Completed1923 (103 years old)

Storage & Hydraulics

NID Storage3,392 acre-ft
Max Storage3,392 acre-ft
Normal Storage1,235 acre-ft
Surface Area719 acres
Drainage Area35 sq mi
Max Discharge3,900 cfs

Ownership & Safety

PurposeRecreation
OwnerNH FISH AND GAME DEPARTMENT
Owner TypeState
Hazard ClassificationHigh
Condition AssessmentPoor
Last Inspection04/26/2022
Emergency Action PlanYes

Identifiers

NID IDNH00011
Federal IDNH00011
More InfoState Dam Safety Program

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