Aaron River Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateMassachusetts
CountyNorfolk
Nearest CityCohasset
River/StreamAaron River
Coordinates42.20945, -70.82350

Physical Characteristics

Dam TypeEarth
NID Height29 ft
Dam Length750 ft
Year Completed1978 (48 years old)

Storage & Hydraulics

NID Storage2,350 acre-ft
Max Storage2,350 acre-ft
Normal Storage1,470 acre-ft
Surface Area143 acres
Drainage Area4 sq mi
Max Discharge8,829 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeWater Supply
OwnerTown of Cohasset
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection04/14/2023
Emergency Action PlanYes

Identifiers

NID IDMA01280
Federal IDMA01280
More InfoState Dam Safety Program

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