Welcome to the Guam Hydrologic Survey!
Get started here:
A sortable and searchable collection of publicly available reports
A collection of presentation files from workshops, meetings, and conferences
A collection of scanned maps and posters from historical archives
A collection of maps from agencies from the local and federal government
A collection of data visualization web apps with map and graph components
Records and information of ground drillings and wells installed in northern Guam
Contains data source, analysis graphs, and maps
Available rain gauge data for northern and southern Guam
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All available reports (e.g., annual reports, state of the aquifer, etc.) and research areas are now in one place – check them out under Reports and Research.
We thank you for your patience as we continue to roll out updates and improve the site. If you need any help, feel free to reach out here.
Happy exploring!