Underlying DEM Resolution for Slope Data

Lindsey's Avatar


23 Jun, 2020 06:08 PM


Can you please tell me what DEM resolution data (i.e. 1 meter, 3 meter, 10 meter) you use for generating your percent slope layer?


  1. Support Staff 1 Posted by Meghan on 23 Jun, 2020 11:22 PM

    Meghan's Avatar

    Hi Lindsey,

    I believe you are referring to the Slope Angle Shading overlay. This overlay incorporates high resolution (1m, 1/9th arc second) LIDAR data where available and the standard 10 m NED data from the USGS. High resolution coverage can be found on this live map here: https://caltopo.com/l/CM87. More information on the high resolution elevation data can be found in this blog post: https://caltopo.com/about/2019/12/20/high-resolution-elevation-data/

    Elevation shading (including custom layers) and hillside/terrain shading layers also incorporate in the new high res data.

    I hope this helps answer your question! If not, please let me know what specific layer you were referring to.


  2. Meghan closed this discussion on 23 Jun, 2020 11:22 PM.

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