Second Connecticut Lake Dam

Low HazardFair ConditionEmergency Action Plan: Yes

Location

StateNew Hampshire
CountyCoos
Nearest CityPITTSBURG
River/StreamCONNECTICUT RIVER
Coordinates45.14130, -71.18160

Physical Characteristics

Dam TypeEarth
NID Height28 ft
Dam Height28 ft
Dam Length568 ft
Year Completed1849 (177 years old)

Storage & Hydraulics

NID Storage12,500 acre-ft
Max Storage12,500 acre-ft
Normal Storage11,650 acre-ft
Surface Area1,300 acres
Drainage Area45 sq mi
Max Discharge11,000 cfs

Ownership & Safety

PurposeHydroelectric
OwnerGREAT RIVER HYDRO LLC
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentFair
Last Inspection06/24/2019
Emergency Action PlanYes

Identifiers

NID IDNH00187
Federal IDNH00187
More InfoState Dam Safety Program

Nearby Dams

Big Brook Bog Dam 2.5 mi Significant East Inlet Dam 2.8 mi Low Coon Brook Bog Dam 3.3 mi Low Moose Falls Dam 3.7 mi Significant Scott Bog Pond Dam 4.8 mi Low First Conn Lake South Bay Dike 6.2 mi Low Perry Pond Dam 6.2 mi Undetermined First Connecticut Lake Dam 6.4 mi High Shehan Pond Dam 8.8 mi Low Pearley Terrill Dam 9.5 mi Low