Most of our maps are now available for download

Almost all of our Geologic Maps (GM and OF-GM series) , Resource Maps, and Hydrologic Sheets are available for free download. We are working to scan and post the remaining maps for these series.

If a particular map of interest is currently not available for download, or if there are any problems with the documents posted, please contact us.

Also please note that our Memoirs, Bulletins, and Hydrologic sheets are another source for geologic and other types of maps as well as detailed geoscience research.