Online Map Resources

Sources of digital geologic, topographic, and geophysical data.
Complied by Dr. Susanne U. Jänecke, Utah State University, 2021.

National Map
There is LIDAR for super simple, no effort viewing, the ability to identify the elevation of points, make simple topographic profiles, view excellent slope maps and tons more. The National map is mostly to see imagery and it is not set up as well for downloading and processing data.
National Map

AGI Geoscience Intersections
Explore how geoscience intersects with societal challenges and informs our understanding of critical issues such as climate change, natural hazards, and resource management.
AGI

Earth Explorer
This is the best portal for downloading national imagery and datasets. Users can download satellite imagery (Landsat and Sentinel), stereo sets of Aerial photographs, and much more.
Earth Explorer

UC Santa Barbara Library: Aerial Photography
The largest known such collection in an academic library: more than 2.5 million images. The collection dates back to the 1920s, with most of our photography covering areas in California. 
UCSB Library

ArcGIS Web Application
This web application lets a user annotate a satellite or terrain map and capture the result in a screen capture. Edits are not possible, nor are saves.
ArcGIS

USGS Earthquakes Map
This site is to track all past earthquakes, with many sorting options.
Earthquakes Map

GeoMapApp
Topo maps, colored dems, overlays, geophysical data, visualizing own xyz datasets, making profiles and much more. Geologic and Geophysical data are available for national and states.
GeoMapApp

The National Geologic Map Database
Access to digitized geologic maps, cross sections, unit descriptions, and more. MapView allows downloads in GoogleEarth format when author is at USGS.
USGS

UGS Interactive Geologic Map
Useful for rock descriptions or downloads of geologic maps.
UGS

Australian Maps
Interactive maps of Australia, with geology, geophysics, hazards and much more.
Australia

Open Topography
This site facilitates community access to high-resolution, Earth science-oriented topography data and related tools and resources.
OpenTopography

CalTopo
Lets users create digital elevation models, topographic, and hillshade maps.
CalTopo

Google Earth
Lots of options.
Google Earth

USGS Maps ArcGIS
Download GoogleEarth files for future use.
USGS