Need quick access to elevation data in a variety of formats? Check out this resource from the USGS. The web app makes it easy to find your area of interest, select an elevation product, and download just what you need.  https://apps.nationalmap.gov/3depdem/

The USGS National Map, 3D Elevation Program (3DEP) lidar data is now available as an Amazon Public Dataset. For more details on this new capability please see the USGS Technical Announcement  at: https://www.usgs.gov/news/usgs-3dep-lidar-point-cloud-now-available-amazon-public-dataset

For additional information, contact The National Map Service Desk, United States Geological Survey at tnm_help@usgs.gov.

The USGS National Map is making a small change to its dynamic Contour Overlay service URL starting Friday, March 1, 2019. The new Contour service URL will be https://carto.nationalmap.gov/arcgis/rest/services/contours/MapServer. The ‘c’ in contours is now a small letter rather than a capital letter. This change maintains consistency in the naming pattern across our overlay services and helps facilitate the automation in loading our data updates. There are no changes to the cartography of the product, only the URL.

For additional information please contact The National Map Service Desk, United States Geological Survey at tnm_help@usgs.gov.

GISAA is now on social media!

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Ryan Kibsgaard, over at ASI, provides a general description of WebGL, specifically in regards to rendering maps natively in a browser.  Check out the full article and be sure to click through the interactive examples, such as the hurricane map shown below.

On January 7, 2019 Google Earth updated it's measuring tool with some new features, as well as features previously found only in Google Earth Pro.  Read their official announcement for more information.  

Thank you to everyone who submitted and voted for our new logos.  We had some great submissions and great participation for the final vote with one logo receiving an overwhelming majority of votes.  You will see lots of updates over the next few months as we re-brand with our new logo and name.