Elevation Slicer - new button in the map toolbar. Hides terrain above or below a level or a tilted plane, useful for tracing old river benches and channels in paleoplacer exploration.
3D Terrain Models - in the Tools menu. Turn any area into a file for 3D printing or CNC.
Sanborn Fire Insurance Maps - in Historic Maps. Detailed town maps from the 1880s to 1950s.
Multispectral Imaging - new menu with the USGS alteration map from satellite data (Basin and Range states).
Snowpack - in Maps & Imagery. Daily NOAA snow depth as water, handy for planning access to high country.
Mining Claims fixed - BLM moved its claims servers; Open and Closed claims work again, and Closed now shows the full history.
New: Closed Claims, Past Year - claims closed or changed in the last year, for monitoring recent changes.
Note: USGS throttles its LIDAR service at night and on weekends. Blurry LIDAR tile? Right-click it (or long-press on a phone) to reload.
