Riverdale Mills

Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateMassachusetts
CountyWorcester
Nearest CityNorthbridge
River/StreamBlackstone River
Coordinates42.13880, -71.64020

Physical Characteristics

Dam TypeConcrete
NID Height10 ft
Dam Height10 ft
Dam Length142 ft
Year Completed1957 (69 years old)

Storage & Hydraulics

NID Storage89 acre-ft
Max Storage89 acre-ft
Normal Storage89 acre-ft
Surface Area12 acres
Drainage Area142 sq mi
Max Discharge19,400 cfs
Spillway TypeControlled

Ownership & Safety

PurposeHydroelectric
OwnerJames M. Knott
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection08/02/2022
Emergency Action PlanNot Required

Identifiers

NID IDMA00942
Federal IDMA00942
More InfoState Dam Safety Program

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