Slope Angle
Identify avalanche prone terrain.
Slope shading
Visualize slopes with high avalanche hazard. Slope angle ranges are color coded according to the legend below.
Supported Platforms
Desktop
Mobile (iOS & Android). U.S. only
You can customize the color scheme by clicking on a segment of the legend.
Slope highlight
Highlight a specific slope angle range. This is useful for finding slopes in your target angle, i.e. 20-30º for low angle days. Or for highlighting flat areas to avoid.
Supported Platforms
Desktop
Data source
On mobile, this layer is produced from the USGS 1/3 arc-second DEM (10m resolution).
On desktop, this layer uses the Mapbox Terrain DEM which has higher resolution in some places.
Slope angle is not a perfect indicator of avalanche potential. It's always possible that the angle has been underestimated, or that the actual angle is steeper on small, localized slopes. Always verify angles with a slope meter, and seek proper education before venturing into avalanche terrain.
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