US Topo maps are produced by the USGS National Geospatial Technical Operations Center. See this FAQ for more information about specific layers. A challenge has been finding national datasets for all the feature types of a traditional topographic map. Many additional feature classes have been added over the life of the project, and new and better data sources have been found for others. The maps include layers not present on most traditional topographic maps, such as aerial photo and shaded relief images. Limited GIS functionality, such as displaying ground coordinates, is available with all maps, and the layered construction of the PDF files allows users to turn data layers on and off. All maps can be viewed and printed with Adobe Reader or comparable PDF viewing software. US Topo maps can be downloaded free of charge from several USGS websites. US Topo maps repackage geographic information system (GIS) data in traditional map form this benefits non-specialist map users, as well as applications that need traditional maps. These maps are modeled on the familiar 7.5-minute quadrangle maps of the period 1947-1992, but are mass-produced from national GIS databases on a repeating cycle.

The project was launched in late 2009, and the term “US Topo” refers specifically to quadrangle topographic maps published in 2009 and later. US Topo topographic maps are produced by the National Geospatial Program of the U.S. Tables for the outside figure data, block corner, reference mark, control coordinate tables, and the erf areas listing, are all drawn as part of the toolkit.Building on the success of more than 130 years of USGS topographic mapping, the US Topo series is a new generation of maps of the American landscape. This routine is continually being refined and works really well. Road reserves are kept free of dimensions. The dimensioning algorithm is intelligent enough to place the dimension on the correct side of the line or alternatively, to straddle the line as applicable. This means that the entire GP can be dimensioned in one go. In terms of Dimensioning, all polygons that have been given an identifying (erf) number can be automatically dimensioned. Specify various separators for the decimal point, bearings and thousands position.Maintain a database of trigonometrical beacons and town survey marks with user-defined symbols.User configurable fonts, pens and linestyles.Define the layout and text in an easy-to-use setup dialog box.For general plans the existing layout drawing can be fully dimensioned, and all required tables generated.

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