Penacook Lake Dam

High HazardPoor ConditionEmergency Action Plan: Yes

Location

StateNew Hampshire
CountyMerrimack
Nearest CityCONCORD
River/StreamRATTLESNAKE BROOK
Coordinates43.24259, -71.57653

Physical Characteristics

Dam TypeEarth
NID Height9 ft
Dam Height9 ft
Dam Length265 ft
Year Completed1873 (153 years old)

Storage & Hydraulics

NID Storage2,210 acre-ft
Max Storage2,210 acre-ft
Normal Storage1,515 acre-ft
Surface Area360 acres
Drainage Area3 sq mi
Max Discharge600 cfs

Ownership & Safety

PurposeWater Supply
OwnerCITY OF CONCORD
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentPoor
Last Inspection10/25/2022
Emergency Action PlanYes

Identifiers

NID IDNH00360
Federal IDNH00360
More InfoState Dam Safety Program

Nearby Dams

Briar Pipe 2.5 mi Low York 2.6 mi Low Penacook Upper Falls 3.1 mi Low Penacook Lower Falls Diversion 3.1 mi Low Allied Leather Auxiliary 3.1 mi Low Turtle Pond Dam 3.1 mi Low Hargate Dam 3.4 mi Low Turkey Pond Dam 3.5 mi High Flagpole Pond Dam 4.1 mi Low Hoit Road Marsh Dam 4.2 mi Low