REEF uses a hierarchical 8-digit code system for survey site locations. Each geographic area has its own set of codes. When completing a survey, you need to know the complete 8-digit code for the site you surveyed.

If the site that you surveyed is not currently on our list, then please email zonecode@REEF.org to request a new code to be assigned. Please provide the site name, general location, and ideally the latitude and longitude.

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Region: HAW
Zone: Niihau Island and Lehua Island

ZoneZone Code listGeographic ReportNameHave Coordinates?
2101Zone Code listGeographic ReportNorth Shore Niihau (Kaunuopou Pt. - north of Kawaihoa Pt.)
21010001Geographic ReportNiihau Arches/SuperhighwayYes
21010003Geographic ReportVertical Awareness PinnacleYes
21010004Geographic ReportPu'u Mu'uYes
2102Zone Code listGeographic ReportSouth Shore Niihau (Kawaihoa Pt. - south of Kaunuopou Pt.)
2103Zone Code listGeographic ReportLehua Rock Island
21030001Geographic ReportPyramid Point / Lehua LedgeYes
21030002Geographic ReportVertical Awareness/The PinnacleYes
21030003Geographic ReportStaircaseNo
21030004Geographic ReportLehua Rock KeyholeYes