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: TWA
Zone: Northeast Region Coast

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ZoneZone Code listGeographic ReportNameHave Coordinates?
870301Zone Code listGeographic ReportMaranhao
870302Zone Code listGeographic ReportPiaui
870303Zone Code listGeographic ReportCeara
870304Zone Code listGeographic ReportRio Grande do Norte
870305Zone Code listGeographic ReportParaiba
870306Zone Code listGeographic ReportPernambuco
870307Zone Code listGeographic ReportAlagoas
870308Zone Code listGeographic ReportSergipe
870309Zone Code listGeographic ReportBahia