Share Share
US National Dams
Kaopala Basin Dam
Find a dam
Contents
Explore
Search
US National Dams
More
About US National Dams
Copyright © 2021 nationaldams.com and US National Dams. All Rights Reserved.

All content on this website ("the Site") is the property of US National Dams. The collection and assembly of content on this Site are the exclusive property of US National Dams and are protected by copyright and other intellectual property laws.

Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).

Kaopala Basin Dam Share Share

Overview Share Share
Back to Top
Napili, Hawaii
Flood Control
Local government owned
Built in 1998

Kaopala Basin Dam is an earth dam built on the Kaopala Gulch River and is located in Napili, Hawaii. It was built in 1998 for the purpose of flood control.

The dam is owned by the local government. It is also known as Structure No. 4.

Location
Kaopala Basin Dam
Napili, Hawaii, U.S.
Dam type
Earth
Dam type
Flood control
Purpose
Unknown
Foundation type
Unknown
Core type
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Map Share Share
Back to Top
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Ownership Share Share
Back to Top
Maui County, Dept of Public Works
Owner
Local government

Kaopala Basin Dam is owned by the local government.

Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Construction Share Share
Back to Top
1998
Completed
USDA NRCS
Dam designer
Kaopala Gulch River
River built on
Kaopala Basin Dam was built in 1998.
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Metrics Share Share
Back to Top
Summary
Dam length 250 feet
Dam height 30 feet
Max discharge 7,200 cubic feet per second
Max storage 38 acre feet
Surface area 2 acres
Drainage area 1 square miles
250 feet
Dam length

Length of the dam is defined as the length along the top of the dam. This also includes the spillway, powerplant, navigation lock, fish pass, etc., where these form part of the length of the dam. If detached from the dam, these structures should not be included.

30 feet
Dam height

Height of the dam is defined as the vertical distance between the lowest point on the crest of the dam and the lowest point in the original streambed.

7,200 cubic feet per second
Max discharge

Number of cubic feet per second the spillway is capable of discharging when the reservoir is at its maximum designed water surface elevation.

38 acre feet
Max storage

Maximum storage is defined as the total storage space in a reservoir below the maximum attainable water surface elevation, including any surcharge storage.

2 acres
Surface area

Surface area, in acres, of the impoundment at its normal retention level.

1 square miles
Drainage area

Drainage area of the dam, in square miles, which is defined as the area that drains to a particular point (in this case, the dam) on a river or stream.

Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Safety Share Share
Back to Top
High
Downstream potential hazard

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

Has emergency action plan
Emergency action plan

An emergency action plan is defined as a plan of action to be taken to reduce the potential for property damage and loss of life in an area affected by a dam failure or large flood.

11/17/2016
Most recent inspection date

Inspections are every 5 years.

Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
About Share Share
Also known as Structure No. 4
Former name 0.0
Latitude 20
Longitude -156
NID ID (National ID) HI00134
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).
Was this site helpful to you? We would very much appreciate you whitelisting us or using this link when you shop on Amazon (no impact on your order).