Elevation-derived watershed basins and characteristics for major rivers of the conterminous United States [electronic resource] / by S.K. Poppenga and B.B. Worstell.
Imprint
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2008.
Mode of access: Internet at the USGS web site. Address as of 9/30/08: http://pubs.usgs.gov/sir/2008/5153/pdf/sir2008-5153.pdf ; current access is available via PURL.
Note
Title from PDF title screen (viewed on Sept. 22, 2008).