Water resources data for the 1979 water year for Virginia consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground-water wells. This volume contains records for water discharge at 200 gaging stations; stage only at 1 gaging station; stage and contents at 9 lakes and reservoirs; water quality at 54 gaging stations and 38 wells; and water levels at 62 observation wells. Also included are data for 64 crest-stage partial-record stations. Locations of these sites are shown on figures 3 and 4. Additional water data were collected at various sites not involved in the systematic data-collection program. Discharge measurements and water-quality analyses were made at 97 coal-monitoring partial-record stations. Miscellaneous data were collected at 220 measuring sites and 64 water-quality sampling 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 Virginia.