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 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
Choose one from the map below:

Region: TEP
Zone: Colorado River Basin

Click a column header to sort by that column. Hold shift and click to sort by multiple columns

ZoneZone Code listGeographic ReportNameHave Coordinates?
2111Zone Code listGeographic ReportDelta del Río Colorado
2112Zone Code listGeographic ReportPunta Sargento
2113Zone Code listGeographic ReportPunta San Felipe
2114Zone Code listGeographic ReportBahía San Felipe
2115Zone Code listGeographic ReportIsla Montague
2116Zone Code listGeographic ReportIsla Gore
2117Zone Code listGeographic ReportIsla Pelícano
2118Zone Code listGeographic ReportRocas Consag