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: PAC
Zone: Allan Island

ZoneZone Code listGeographic ReportNameHave Coordinates?
22210301Geographic ReportAllan Island North SideYes
22210302Geographic ReportWilliamson Rocks (off Allan Island)Yes
22210303Geographic ReportDennis ShoalYes
22210304Geographic ReportYoung Island SE InletYes
22210305Geographic ReportAllan Island SE SideYes