Water resources data for the 1990 water year for Indian consist of records of discharge, stage, and water quality of streams and wells; reservoir stage and contents; and water levels in lakes and wells. This report contains records of discharge for 181 stream-gaging stations, stage for 7 stream stations, stage and contents for 1 reservoir, water quality for 3 streams and 5 observation wells, and water levels for 80 lakes and 95 observation wells. Additional water data were collected at various sites, not part of the systematic data-collection program, and are shown as miscellaneous measurements. These data represent that part of the national Water Data System operated by the U.S. Geological Survey in Indiana in cooperation with State and Federal agencies.