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Onota Lake Dam

Massachusetts, Berkshire County, Onota Brook, tributary to West Branch Housatonic River

Location

StateMassachusetts
CountyBerkshire
RiverOnota Brook, tributary to West Branch Housatonic River
Coordinates42.47626, -73.26719

Physical Characteristics

NID Height18 ft
Dam Height-
Dam Length240 ft
NID Storage6,800 acre-ft
Max Storage6,800 acre-ft
Surface Area660 acres

Safety Classification

Hazard PotentialHigh
Condition AssessmentSatisfactory
EAP StatusYes
Last InspectionDecember 8, 2025
Inspection Frequency2

Dam Information

Year Completed1865
Primary PurposeRecreation
Dam TypeConcrete
Owner TypeLocal Government
OwnerCity of Pittsfield
Other NameN/A

Location Map

About This Dam Record

Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.

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