By Mike Landers The concept of global positioning is not a new one. Launched by the US Department of Defense in 1973 and first made...
As part of an ongoing effort to improve the suite of hydrography web-based map services, the U.S. Geological Survey (USGS) will separate the services for the National Hydrography Dataset (NHD) and Watershed Boundary Dataset (WBD).
The Bureau of Transportation Statistics (BTS) released a newly updated double-sided wall map, Transportation Geography of the United States. The front of this map features a reference map of select U.S. transportation infrastructure and connections, including the National Highway System (NHS), class I railroads, airports with at least 750,000 enplanements, major ports with a commodity tonnage total of 10 million or more, and border crossings on the NHS.