Dam Inventory System
Department of Land and Natural Resources
State of Hawaii
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MAHINAHINA RESERVOIR
MA-0144
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DAM OVERVIEW DATA
Dam Height:
Top of Crest:
Spillway Crest:
Operating Level:
Maximum Storage: /
Electronic Gage Data
DAM SCHEMATIC
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Primary Spillway Maximum Discharge: Hazard Classification:
Emergency Action Plan: Date of Last Inspection:
Date of Last EAP: Electronic Gage URL:
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DAM INFO
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1. GENERAL INFORMATION
a. National Dam ID: HI00144
b. State Dam ID: MA-0144
c. Dam Name: MAHINAHINA RESERVOIR
d. Other Name(s): Maui County Water West
e. Longitude/Latitude (dec): -156.657254 /20.949047
f. County/Island: Maui/Maui
g. Type of Dam: Earthen
h. Purpose: Water Supply
i. Completed / Last Modified: 1995 /
j. Nearest Town/City: Honokowai 1.8 miles
k. Water Body Type: State Regulated Dam
l. Dam Height: 34.0 ft
m. Dam Length: 630.0 ft
n. Drainage Area: 0.0073 sq. miles / 4.672 acres
o. Primary Spillway Type: Glory Hole
p. Maximum Storage: 73.0 acre-ft / 23.8 MG
2. OWNER INFORMATION
a. Name of Owner(s): Maui County, Dept of Water Supply
b. TMK(s): (2) 4-4-002:015,, (2) 4-4-002:018, (2) 4-3-001:084
3. HAZARD POTENTIAL CLASSIFICATION
a. Hazard Classification: High
b. Emergency Action Plan: Yes