Puu O Hewa Reservoir

High HazardPoor ConditionEmergency Action Plan: Yes

Location

CountyKauai
Nearest CityKOLOA
River/StreamTR-WAIHOHONU STREAM OFFSTREAM
Coordinates21.93585, -159.47092

Physical Characteristics

Dam TypeEarth
NID Height33 ft
Dam Height23 ft
Dam Length540 ft
Year Completed1915 (111 years old)

Storage & Hydraulics

NID Storage115 acre-ft
Max Storage115 acre-ft
Normal Storage73 acre-ft
Surface Area8 acres
Drainage Area0 sq mi
Max Discharge320 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeIrrigation
OwnerEric A. Knudsen Trust
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentPoor
Last Inspection01/29/2026
Emergency Action PlanYes

Identifiers

NID IDHI00107
Federal IDHI00107
More InfoState Dam Safety Program

Nearby Dams

Mauka Reservoir 0.4 mi High Pia Mill Reservoir 1.0 mi High Piwai Reservoir 1.3 mi High Omao Reservoir 1.3 mi High Pinau Reservoir 1.4 mi High Huinawai Reservoir 1.9 mi High Waita Reservoir 2.1 mi High Aepo Reservoir 2.1 mi High Aepoalua Reservoir 2.2 mi High Aepoekolu Reservoir 2.2 mi High