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Maui Reservoir 40

Hawaii — Maui County — KALIALINUI GULCH OFFSTREAM

Location

StateHawaii
CountyMaui
RiverKALIALINUI GULCH OFFSTREAM
Coordinates20.81545, -156.36805

Physical Characteristics

NID Height47 ft
Dam Height42 ft
Dam Length810 ft
NID Storage165 acre-ft
Max Storage165 acre-ft
Surface Area14 acres

Safety Classification

Hazard PotentialHigh
Condition AssessmentFair
EAP StatusYes
Last InspectionJuly 19, 2025
Inspection Frequency5

Dam Information

Year Completed1926
Primary PurposeIrrigation
Dam TypeEarth
Owner TypePrivate
OwnerMahi Pono Holdings, LLC
Other NameHc&S Reservoir 40

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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