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Hawaii Water Quality Extension Program
nps 319 | oahu watersheds | koolaupoko | project 04-195
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Natural Resources Extension

Project Name: Kui A Hookui
ASO Log No.: 04-195
Start/End Date: September 2003 to September 2006
Federal Funds: $120,000.00
Matching Funds: $200,061.00
Contractor: Richard C. K. Barboza
Hui Ku Maoli Ola
41-888 Kakaina Street
Waimanalo, HI 96795
Phone: (808) 259-6580
Waimanalo streams are considered severely impaired according to DOH in their TMDL for the watershed. There is mass degradation of the stream system due to flood control and a high level of nitrates and phosphates in the streams from intensive agricultural activities.
Objectives/Goals: To reduce the high levels of nitrates in the Waimanalo stream and reduce the sediment load associated with eroding stream banks.
Methods Employed: Control soil erosion through stream restoration by removing all existing invasive weeds and replacing with “maintenance free” native species. Experiment with hydroseeding native plants. Collect soil erosion data and plant survival data, and conduct water quality testing. Train and educate youth and volunteers in the restoration efforts.
Pollutants of Concern: Nitrates and phosphates
Watershed: Koolaupoko Watershed, island of Oahu
Size of Project: 1500 feet
Affected Water Bodies: Kahawai Stream, Waimanalo Bay
Deliverables: • Informational pamphlet entitled “Waimanalo Stream Life”
• Monitoring plan
• Photographs of the project
• Pre and post survey of adjacent residents
• Monthly media releases
• Website with information about the project
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Cooperative Extension Service programs, conducted in cooperation with the U. S. Department of Agriculture, are provided to the people of Hawaii without regard to race, sex, age, religion, color, national origin, ancestry, disability, marital status, arrest and court record, sexual orientation, or veteran status. The University is an equal opportunity / affirmative action institution.