National Geospatial Program

On December 3, 2009, more than 300 people gathered at the U.S. Geological Survey (USGS) headquarters in Reston, Virginia, to celebrate the 125^th anniversary of USGS topographic mapping. The ceremony opened with a special production by Duke Ellington School of the Arts

Cover image for the January 2009 Photogrammetric Engineering and Remote Sensing Journal

This is the cover of the September 2008 Photogrammetric Engineering and Remote Sensing Journal

This is the cover of the June 2006 Photogrammetric Engineering and Remote Sensing Journal

Graphical illustration of lidar pulse versus a lidar return

Warren "Buz" Brown making second-order measurements using a Kern theodolite. The blind is to prevent temperature variations from affecting the instrument.

Warren "Buz" Brown making second-order measurements using a Kern theodolite. The blind is to prevent temperature variations from affecting the instrument.

USGS topographer Don Winstead working with a level in Hawaii.

USGS topographer Russ Curtis using a Wild N3 level.

Topographer Jim Tennant making measurements with a Wild T-2 theodolite on Mount Trumball in Arizona.

TNMCorps Mapping Challenge: Schools in OH, MI, IN as of 09/03/20