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.
Kaopala Basin Dam is owned by the local government.
|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|
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.
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.
Number of cubic feet per second the spillway is capable of discharging when the reservoir is at its maximum designed water surface elevation.
Maximum storage is defined as the total storage space in a reservoir below the maximum attainable water surface elevation, including any surcharge storage.
Surface area, in acres, of the impoundment at its normal retention level.
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.
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
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.
Inspections are every 5 years.
|Also known as||Structure No. 4|
|NID ID (National ID)||HI00134|