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Koolau Loa Watershed Management Plan

The Koolau Loa District consists of a 58 square-mile area on the windward side of the Koolau Mountains from Kaaawa to Kawela. It is one of the eight district Watershed Management Plans that together will constitute the Oahu Watershed Management Plan. The Honolulu Board of Water Supply (BWS) has completed the development of the district-wide Koolau Loa Watershed Management Plan (KLWMP), which will be used to meet the requirements of preparing a county water use and development plan under the State of Hawaii Water Code and City and County of Honolulu ordinance.

Final Plan

The Koolau Loa Watershed Management Plan was finalized in August 2009.


The overall goal of the KLWMP is to formulate an environmentally holistic, community-based, and economically viable watershed management plan that will provide a balance between:

  • the preservation and management of Oahu's watersheds, and
  • sustainable ground water and surface water use and development to serve present users and future generations.

Plan Area

Koolau Loa District, from Waialee to Kaoio Point (Kaaawa to Kahuku)

District Size

37,201 acres; approximately 15,000 people


Kaaawa, Kahana, Punaluu, Hauula, Laie, Kahuku

Water Use

Koolau Loa Watersheds and Water Systems

koolau loa district

Community Meetings

Throughout the project, the team held several public "working group" meetings and other forms of consultations with community leaders, community groups and organizations, landowners, and public agencies. To see presentation material or notes from various public meetings, please email the BWS Communications Office at contactus@hbws.org.

For More Information

group 70 logo

Group 70 International, Inc.
Contact: Jeff Overton
Phone: (808) 523-5866
Email: klwmp@group70int.com

bws logo Board of Water Supply
Contact: Barry Usagawa
Phone: (808) 748-5900
Email: busagawa@hbws.org