3D Elevation Program (3DEP) product updates and status maps are available at these sites:
- The National Map Data Delivery News
- Subscribe to Simple Notification Services to receive emails regarding changes to the status of The National Map Services
- The National Map Download Client – Click “Show” below each elevation product
- LidarExplorer – Lidar point cloud only
- DEM Availability Viewer - 1 meter DEMs only
Acquire updated products through The National Map Viewers, Applications, and Services.