This paper provides an overview of geospatial PDFs and their basic features, as well as some of the tools available to interact with these files. Information is also provided on more complex software tools designed to manipulate and create geospatial PDFs, as well as several mobile apps. This paper focuses on USGS US Topos as a case study, since these maps are widely used.
The U.S. Geological Survey (USGS) produces 1:100,000-scale county maps for each of the 72 counties in Wisconsin. These maps show topographic features including contours and elevation in meters, highways, roads and other manmade structures, water features, woodland areas, and geographic names. These maps vary in size depending on the particular county. USGS county maps in Wisconsin were generally produced between 1976 and 1990.
Engravings released that were once used to create USGS topos
Project Manager Greg Allord highlights some interesting Wisconsin connections to a major USGS initiative.
Over 2,800 historic maps of Wisconsin available in GeoPDF format for free.
In response to the need for updated topographic maps, the U.S. Geological Survey has developed a national map series called the US Topo.
The U.S. Geological Survey will release the next generation of digital topographic maps for Wisconsin in the summer of 2010 as part of their new “US Topo” product line.
Sheet price now $6