US Topo - Topographic Maps for the Nation
Adapted from U.S. Geological Survey websites
US Topo is the next generation of topographic maps from the USGS and was formally released on December 3, 2009. Arranged in the familiar 7.5-minute quadrangle format, digital US Topo maps are designed to look and feel – and perform – like the traditional paper topographic maps for which the USGS is so well known. In contrast to paper-based maps, US Topo maps provide modern technical advantages that support faster, wider public distribution and enable basic, on-screen geographic analysis for all users.
US Topo maps are available free online at US Topo Web Site. Each map quadrangle is constructed in GeoPDF® format from key layers of geographic data – orthoimagery, roads, geographic names, topographic contours, and hydrographic features – found in The National Map, which is a nationwide collection of integrated data from local, State, Federal, and other sources.
The prototype of the US Topo, “Digital Map – Beta,” has been available since June 2009. A US Topo map includes all of the content of the earlier “Digital Map – Beta” plus integrated contours and hydrographic features.
As the US Topo product evolves, the USGS will incorporate additional geographic data layers from The National Map and will also provide digital, historical versions of paper-based USGS topographic map quadrangles.
Minnesota US Topo maps are scheduled for production in 2010 – see status map.
For more information on US Topo map features, including a Quickstart Users Guide, see the US Topo Web Site.