Here are some USGS Web pages with more information on land surveying and Anywhere:
Topographic maps
General information on topographic maps with links to topographic mapping, USGS topographic maps, digital raster graphics,how to find and order USGS maps, map revision, and map symbols
(Score: 0.690)
Lewis and Clark and the U.S. Geological Survey in North Dakota
Homepage linking the historic journey of Lewis and Clark and the research of the USGS in the same region with links to mapping history, remarkable points on the Missouri River, educational activities, photo gallery, and publications.
(Score: 0.452)
Definition:
The measurement of dimensional relationships, as of horizontal distances, elevations, directions, and angles, on the earth’s surface especially for use in locating property boundaries, construction layout, and mapmaking. [American Heritage Dic. of the English Language, 4th ed.]