Water-resources data for the 1998 water year for West Virginia consist of records of discharge and water quality of streams and water levels of observation wells. This report contains discharge records for 65 streamflow-gaging stations; discharge records provided by adjacent states for 10 streamflow-gaging stations; annual maximum discharge at 37 crest-stage partial-record stations; water-quality records for 21 stations; and water-level records for 14 observation wells. Locations of these sites are shown on figures 4 and 5. Additional water data were collected at various sites, not involved in the systematic data collection program, and are published as miscellaneous sites. These data represent that part of the National Water Data System collected by the U.S. Geological Survey and cooperating State and Federal agencies in West Virginia.