Skip to main content
U.S. flag

An official website of the United States government

Web Tools

Listed below are some of the most commonly accessed web applications of the National Geospatial Program.


The maps available through topoView are from the USGS US Topo series as well as Historical Topographic Map Collection (HTMC). 

3DEP 1-meter DEM Availability Application

This is a dynamic map showing 3DEP 1-meter DEM availability for the United States and its Territories. 

3DEP Lidar Availability Application

An interactive map showing 3DEP lidar availability by quality level. (Elevation source data index - Lidar, Ifsar, DEM availability)


Geographic Names Information System (GNIS)

The U.S. Geological Survey's National Geospatial Program developed the GNIS in support of the U.S. Board on Geographic Names as the official repository of domestic geographic names data, the official vehicle for geographic names use by all departments of the Federal Government, and the source for applying geographic names to Federal electronic and printed products.

Download Data & Maps from The National Map

This is the primary search and download application for USGS topographic maps and base-layer GIS data. The same topographic maps are also downloadable through other interfaces.

The National Map Viewer

The National Geospatial Program satisfies the needs of customers by providing geospatial products and services that customers incorporate into their decisionmaking and operational activities.

Alaska Mapping

New US Topo maps for Alaska are being produced statewide, with digital 7.5 minute 1:25,000-scale maps providing a comprehensive update to the 15-minute 1:63,360-scale printed maps produced nearly fifty years ago. You can view a status map showing where the new maps are available, and link to a site to download the maps.

The 3D Elevation Program: Understanding Natural Hazards in Three Dimensions

This story map provides an overview of the 3D Elevation Program (3DEP) and highlights how lidar data support hazards applications for volcanoes, earthquakes, landslides, hurricanes, flooding, drought and wildfires. An assessment of 3DEP data coverage as of December 2018 for high-risk areas of landslides, fires and hurricanes is presented.

Elevation Data

The 3DEP products and services available through The National Map consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.