Digital map file of major land uses in the United States

The intended use of this coverage was for the state sections of the 1990-91
National Water Summary on surface-water quality. Each state report contains a
map of the state's major land uses and, where possible, discusses the influence
of land use on water quality in the state.

This is a polygon coverage of major land uses in the United States. The source
of the coverage is the map of major land uses in the 1970 National Atlas of the
United States, pages 158-159, which was adapted from U.S. Department of
Agriculture, "Major Land Uses in the United States," by Francis J. Marschner,
revised by James R. Anderson, 1967.