Granville Reservoir Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateMassachusetts
CountyHampden
Nearest CityGranville
River/StreamHollister Brook & Tillotson Brook
Coordinates42.08764, -72.84775

Physical Characteristics

Dam TypeEarth
NID Height85 ft
Dam Length850 ft
Year Completed1930 (96 years old)

Storage & Hydraulics

NID Storage2,400 acre-ft
Max Storage2,400 acre-ft
Normal Storage1,600 acre-ft
Surface Area76 acres
Drainage Area5 sq mi
Max Discharge6,570 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeWater Supply
OwnerCity of Westfield
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection11/03/2022
Emergency Action PlanYes

Identifiers

NID IDMA00707
Federal IDMA00707
More InfoState Dam Safety Program

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