Upper Helemano Reservoir

High HazardPoor ConditionEmergency Action Plan: Yes

Location

CountyHonolulu
Nearest CityWAIALUA
River/StreamTR-POAMOHO STREAM
Coordinates21.52673, -158.02902

Physical Characteristics

Dam TypeEarth
NID Height51 ft
Dam Height46 ft
Dam Length530 ft
Year Completed1912 (114 years old)

Storage & Hydraulics

NID Storage700 acre-ft
Max Storage700 acre-ft
Normal Storage479 acre-ft
Surface Area17 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerDole Food Company Hawaii
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentPoor
Last Inspection10/19/2022
Emergency Action PlanYes

Identifiers

NID IDHI00022
Federal IDHI00022
More InfoState Dam Safety Program

Nearby Dams

Wahiawa Dam 2.4 mi High Helemano 6 Reservoir 3.0 mi High Opaeula 01 Reservoir 3.0 mi High Ku Tree Reservoir 3.7 mi High Koolau Reservoir 4.5 mi Low Kemoo 5 Reservoir 5.2 mi High Oahu Reservoir 155 8.7 mi High Maunaolu Reservoir 10.7 mi High