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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See a list of all locations within this region
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Region: PAC
Zone: S Point Cabrillo - N Point Arena

ZoneZone Code listGeographic ReportNameHave Coordinates?
41070001Geographic ReportMendicino HeadlandsNo
41070002Geographic ReportRussian Gulch State ParkNo
41070003Geographic ReportVan Damme ReefYes
41070004Geographic ReportArena RockYes