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: Northwest Hawaiian Islands

ZoneZone Code listGeographic ReportNameHave Coordinates?
1101Zone Code listGeographic ReportMidway Atoll
11010001Geographic ReportPhoenix CaldronYes
11010002Geographic ReportPeekabooYes
11010003Geographic ReportWild WestYes
11010004Geographic ReportKeoki's LedgeYes
11010005Geographic ReportAngel LedgeYes
11010006Geographic ReportFish HoleYes
11010007Geographic ReportSean's AnchorYes
11010008Geographic ReportCargo PierYes
11010009Geographic ReportReef btw Sean & KeokiYes
11010010Geographic ReportPatch Reef (Inside Lagoon)Yes
11010011Geographic ReportTwo BitsYes
11010012Geographic ReportReef HotelYes
1201Zone Code listGeographic ReportKure Atoll
12010001Geographic ReportCrews Buoy in LagoonYes
12010002Geographic ReportHoei Maru ShipwreckYes
12010003Geographic ReportPua'a and Ma'oYes
12010004Geographic ReportJackson FiveYes
12010005Geographic ReportCynthia's Site/Blue IceYes
12010006Geographic ReportBountiful CanyonsYes
12010007Geographic ReportNorthwest ReefYes
12010008Geographic ReportWest Side Sheltered BackreefYes
12010009Geographic ReportSouth SE Sheltered BackreefYes
12010010Geographic ReportSouth SE Spur & GrooveYes
12010011Geographic ReportFillet - outside atollYes
12010012Geographic ReportNW Blue Rice CoralYes
12010013Geographic ReportCamel HumpYes
1301Zone Code listGeographic ReportPearl and Hermes Atoll
13010001Geographic ReportFish Shangri-LaYes
13010002Geographic ReportEngine Block/ChannelYes
13010003Geographic ReportButterflyfish Heavan/SW ReefYes