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An official website of the United States government

Web Tools

Listed below are some of the most commonly accessed web tools associated with The National Map.

Download Data & Maps from The National Map

The National Map Downloader is the primary search and download application for USGS topographic maps and base-layer GIS data.

The National Map Viewer

Use The National Map Viewer to explore GIS data, see availability of USGS topographic maps, and create your own web map.

topoBuilder - Custom Topographic Maps On Demand

topoBuilder is a public web application released by the National Geospatial Program that enables users to request customized USGS-style topographic maps, known as an OnDemand Topo, that utilize the best available data from The National Map.

topoView

topoView is an easy-use application for browsing the Historical Topographic Map Collection and US Topo maps

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.