The 3D map responds to keyboard navigation keys (←↑↓→), as well as mouse wheel zooming and drag panning. If you have questions, don't hesitate to contact us by email or by phone at 801-537-3300. Functional issues, suggestions or feature requests can be directed to the map portal's lead developer Lance Weaver.

– Click to zoom in.
  Double-click or scroll mouse forward to zoom in at cursor.

– Click to zoom out.
  Scroll mouse backward.

– Click to zoom to the full extent of the geologic maps.

– Tilt the map view between 3D angles
  Right-click and drag mouse forward. (Not available on most mobile devices)

– Rotate the map view between 3D angles.
  Right-click and drag map sideways. (Not available on most mobile devices)

– Toggle between the three available basemaps.

– Click to purchase hard-copy plots of maps at the Natural Resources Map & Bookstore.

– Contact us with your comments and/or suggestions.

– Switch click options between 1- identifying geologic unit descriptions and 2- downloading map data.

– Search by map name to find maps using the keyword search. Partial map name searches are supported by default.

– Use the slider to adjust the opacity of the geologic maps.

– Instantly zoom to a location by entering a city, zip code, address, or lat/long pair.

– Layer Manager and Filter Scale. Turn on and off scale layers (such as 1:500,000 statewide map or 1:24,000 detailed maps). Also you can click on the cog button to change the visible scale range for that layer.

The Geologic Map Portal serves approximately 800 frequently used geologic maps (approximately 25% of all maps in UGS records). These maps are generally considered the "best available" in three scale groups: 1:500,000 (the state geologic map published in 1980); 1:50,000 to 1:125,000 (intermediate scale or 30' x 60' series); and 1:24,000 (7.5' quadrangle series).

These geologic maps are based on field mapping from the 1950s to the present by geologists from the Utah Geological Survey, U.S. Geological Survey, universities (many North American and a few European), private companies, and even retirees.

The accuracy and precision vary greatly between maps. In general, newer maps are more detailed, accurate, and precise than older maps due to newer concepts and technology, but many exceptions exist. Spatial precision ranges from a few feet (meters) to over 300 feet (100 m).

The UGS creates GIS (Geographic Information System) reproductions of many older geologic maps. We generally do not modify or improve the spatial accuracy of features on the map. Therefore, many older maps may have a "new" appearance but still have low precision. The user should independently verify the accuracy and precision of all geologic maps before making important decisions.

The Utah Department of Natural Resources, Utah Geological Survey, makes no warranty, expressed or implied, regarding the suitability of this product for a particular use, and does not guarantee accuracy or completeness of the data. The Utah Department of Natural Resources, Utah Geological Survey, shall not be liable under any circumstances for any direct, indirect, special, incidental, or consequential damages with respect to claims by users of this product.