What is open-elevation?
Open-Elevation (open-elevation.com) is a free and open-source alternative to the Google Elevation API and similar offerings. The code is fully open-source, licensed under the GPLv2. It offers a free public API which is based on the SRTM dataset. The service launched in September, 2017 and can be found on Github.
Where can I get elevation data?
Digital elevation data for the United States and its territories are available through The National Map Downloader. Click the “Help” link at the top of the page for detailed instructions on how to find and download data. There is a separate site for The National Map Services.
Is elevation API free?
Open-Elevation is free to use and has a free public API.
Where can I find free topographic data?
Where can I find free topographic data?
- USGS Earth Explorer. https://earthexplorer.usgs.gov/
- NOAA Bathymetry. https://maps.ngdc.noaa.gov/viewers/bathymetry/
- JAXA ALOS World 3D. http://www.eorc.jaxa.jp/ALOS/en/aw3d30/
- The National Map. https://viewer.nationalmap.gov/basic/
- OpenTopography.
- US Interagency Elevation Inventory.
How accurate is open elevation?
The absolute vertical height accuracy is 16 m (90% linear error) and the absolute horizontal accuracy is 20 m (90% circular error) (http://www.jpl.nasa.gov/srtm/).
Is 1 3 arc second DEM accurate?
As of 2022, the absolute vertical accuracy of the 3D Elevation Program (3DEP) 1/3 arc-second seamless DEM product within the conterminous United States is approximately 0.82 meters root mean square error (RMSE), based on a comparison to almost 25,000 NOAA National Geodetic Survey OPUS points.
How accurate is USGS lidar?
Light Detection and Ranging (lidar) is a technology used to create high-resolution models of ground elevation with a vertical accuracy of 10 centimeters (4 inches).
Can Google maps show elevation?
Enter an address or general location in the search bar. Tap Layers in the upper-right corner of the map. Choose Terrain in the pop-up menu, then tap the X to close the menu. Zoom in to see the elevation in feet (ft) appear faintly along the contour lines.