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ʻEwa Watershed Management Plan (Public Review Draft)

The Board of Water Supply (BWS) and Department of Planning and Permitting (DPP), City and County of Honolulu, have begun the development of the ʻEwa Watershed Management Plan (EWMP), which will be used to meet the requirement of the State Water Code and City Ordinance to prepare a county water use and development plan. ʻEwa is one of eight district plans that together will comprise the Oʻahu Water Management Plan.

Public Review Draft

The ʻEwa Watershed Management Plan Public Review Draft is available as of May 2017. Hard copies may be found at:

  • 'Ewa Beach Public and School Library
    91-950 North Road
    'Ewa Beach, HI 96706
  • Kapolei Public Library
    1030 Manawai Street
    Kapolei, HI 96707
  • Hawaii State Library
    478 S. King Street
    Honolulu, HI 96813


To formulate an environmentally holistic, community-based, and economically viable watershed management plan that will provide a balance between:

  1. the preservation and restoration of Oʻahu's watersheds, and
  2. sustainable ground water and surface water use and development to serve present users and future generations.

ewa watershed management plan draft

District Size

33,677 acres

District Population

94,504 people (2010 Census)

ewa watershed management plan process

ewa watershed management plan 2010 oahu map

For More Information

townscape logo

Townscape, Inc.
Contact: Bruce Tsuchida
Phone: (808) 536-6999
Email: bruce@townscapeinc.com

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