Selected Characteristics of Large Reservoirs, USGS

This is a point coverage of dams in the United States and Puerto Rico, which
originally was derived from the national inventory of dams database (U.S. Army
Corps of Engineers, 1982). The coverage includes locations of and selected
characteristics of approximately 2,700 reservoirs and controlled natural lakes
that have normal capacities of at least 5,000 acre-feet or maximum capacities
of at least 25,000 acre-feet and that were completed as of January 1, 1988.
This coverage is intended as a thematic data layer showing thelocation of dams
and certain attributes of the structures. Information contained in the coverage
has been used for several applications. Location, size, and owner of structures
are depicted on a map of surface-water development (Hitt, 1985). Location and
other selected characteristics of structures are listed in table 3 of Ruddy and
Hitt (1990).The information was the basis for graphics in two National Water
Summary reports. The 1985 National Water Summary shows maps of surface-water
development. The 1987 National Water Summary shows graphs of cumulative
reservoir storage.