Hopkinton Dam - Dike H-2

High HazardNot Available ConditionEmergency Action Plan: Yes

Location

StateNew Hampshire
CountyMerrimack
Nearest CityHopkinton
River/StreamElm Brook
Coordinates43.18955, -71.73440

Physical Characteristics

Dam TypeEarth
NID Height77 ft
Dam Height77 ft
Dam Length5,220 ft
Year Completed1962 (64 years old)

Storage & Hydraulics

NID Storage131,000 acre-ft
Max Storage131,000 acre-ft
Normal Storage700 acre-ft
Surface Area220 acres
Drainage Area382 sq mi
Max Discharge58,000 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerUSACE - New England District
Owner TypeFederal
Hazard ClassificationHigh
Condition AssessmentNot Available
Last Inspection11/02/2021
Emergency Action PlanYes

Identifiers

NID IDNH00726
Federal IDNH00004S001
More InfoState Dam Safety Program

Nearby Dams

Hopkinton Dam 0.7 mi High Hoague - Sprague 0.7 mi Significant Hopkinton Dam - Dike H-3 1.3 mi High Hopkinton Sewage Lagoon Dam 2.0 mi Significant Hopkinton 2.4 mi Low Grassy Pond Dam 2.7 mi Low Kimball Lake Dam 3.4 mi Low Drew Lake South Weir 4.2 mi Low Bear Pond Dam 4.4 mi Low Belanger Recreation Pond Dam 4.6 mi Low