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Hawaii Water Quality Extension Program
nps 319 | oahu watersheds | salt lake | project PO#00614597
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Natural Resources Extension

Project Name: Salt Lake Watershed Improvement Program
ASO Log No.: PO#00614597
Start/End Date: December 1999 to August 2004
Federal Funds: $20,000.00
Matching Funds: $29,000.00
Contractor: Project Manager: Gerald Takayesu
Department of Environmental Services
City & County of Honolulu
650 South King Street, 3rd Floor
Honolulu, HI 96813
Phone: (808) 527-5263
Fax: (808) 527-6214
Salt Lake has been the source of numerous odor complaints due to the lack of circulation in the principal water body. Runoff from Salt Lake, a privately owned water body, discharges through the City’s storm drain system into Moanalua Stream and eventually into Keehi Lagoon, which is on the list of Prioritized list of Category I Watersheds.
Objectives/Goals: To reduce silt build up and odor in Salt Lake through monitoring, educational outreach programs, and by limiting the use of drain inserts, filtration devices, and chemical and biological treatments.
Methods Employed: • Collect and analyze water samples from the waterway surrounding the golf course.
• Install 6 drain inlet inserts, filtration devices, chemical and biological treatment, as well as public outreach to minimize pollutants into the lake.
• Hold informational meetings concerning urban runoff and fertilizer and pesticide use within the Salt Lake Watershed.
• Conduct storm drain stenciling
• Conduct stream bank restoration near Salt Lake Elementary school
• Develop educational information to distribute at a Salt Lake Watershed Awareness Day
• Organize and conduct Salt Lake Watershed Awareness Day
• Obtain water samples for analysis by the Salt Lake Elementary school students
Pollutants of Concern: Dissolved oxygen, pH, nitrogen, phosphorous
Watershed: Moanalua, Keehi, Salt Lake, and Halawa Watersheds, island of Oahu
Size of Project: 1,265 acres
Affected Water Bodies: Salt Lake
Deliverables: • Brochure “Salt Lake Can Help Protect Our Waters…For Life”
• Door hangers with helpful hints to prevent pollutants from entering storm drains
• Video footage and digital photos of Watershed Awareness Day
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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.