Happy Valley Flood Prevention

High HazardNot Rated ConditionEmergency Action Plan: No

Location

StateHawaii
CountyMaui
Nearest CityPUUOHALA VILLAGE
River/StreamIAO OFFSTREAM
Coordinates20.89557, -156.51393

Physical Characteristics

Dam TypeEarth
NID Height18 ft
Dam Height16 ft
Dam Length140 ft
Year Completed1980 (46 years old)

Storage & Hydraulics

NID Storage4 acre-ft
Max Storage4 acre-ft
Normal Storage0 acre-ft
Drainage Area0 sq mi
Max Discharge445 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
OwnerMAUI COUNTY
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentNot Rated
Last Inspection08/21/2014
Emergency Action PlanNo

Identifiers

NID IDHI00125
Federal IDHI00125
More InfoState Dam Safety Program

Nearby Dams

Maui Reservoir 73 1.7 mi High Wailuku Water Reservoir 10 2.1 mi High Maui Reservoir 74 2.2 mi High Kehalani Offsite Retention Basin 2.8 mi High Wailuku Water Reservoir 6 2.8 mi High Maui Reservoir 92 4.9 mi High Maui Reservoir 70 5.3 mi High Maui Reservoir 90 6.4 mi High Maui Reservoir 61 6.8 mi High Maui Reservoir 84 6.9 mi High