Federal Government
U.S. Bureau of Reclamation
U.S. Geological Survey
National Weather Service
Natural Resources Conservations Service
Farm Services Agency

State Government
Department of Agriculture (DOA)
  Agricultural Resource Management Division, DOA
  Agricultural Development Division, DOA
Department of Defense (DOD)
  State Civil Defense, DOD
Department of Hawaiian Home Lands (DHHL)
Department of Health (DOH)
  Safe Drinking Water Branch, DOH
Department of Land and Natural Resources (DLNR)
  Commission on Water Resource Management, DLNR
  Division of Forestry and Wildlife, DLNR
  Land Division, DLNR
 

County Government
Kauai County
  Kauai Department of Water
City and County of Honolulu
  Oahu Civil Defense Agency
  Honolulu Board of Water Supply
  Honolulu Fire Department
Maui County
  Maui Department of Water Supply
Hawaii County
  Hawaii Department of Water Supply

Universities
University of Hawaii
National Drought Mitigation Center (University of Nebraska-Lincoln)

Private Sector
Agribusiness Development Corporation
Amfac Properties, Inc.
Castle and Cooke Hawaii, Inc.
Del Monte Fresh Produce
Dole Food Company, Hawaii
East Maui Irrigation Company, Ltd.
Estate of James Campbell
Gay and Robinson, Inc.
Grove Farm Properties, Inc.
Hawaii Association of Conservation Districts
Hawaii Cattleman’s Council
Hawaii Farm Bureau
Hawaiian Commercial & Sugar Company
Kahua Ranch, Ltd.
Kamehameha Schools
MacFarms of Hawaii, Inc.
Maui Pineapple Company, Ltd.
Princeville Utilities
Robinson Trusts
Ulupalakua Ranch, Inc.
Wailuku Agribusiness Company, Inc.