Water resources data for the 1980 water year for New Mexico consist of records of discharge and water quality of streams; stage, contents and water quality of lakes and reservoir s; and water levels and water quality in wells and springs. This report contains discharge records for 226 gaging stations; stage and contents for 24 lakes and reservoirs; water quality for 91 gaging stations, 97 observation wells. Also included are 138 crest-stage partial-record stations. Additional water data were collected at various sites, not involved in the systematic data collection program, and are published as miscellaneous measurements. 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 New Mexico.