Water resources data for the 1977 water year for Nebraska consist of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water quality in wells and springs. This report contains discharge records for 143 gaging stations; stage and contents for 10 lakes and reservoirs; water quality for 37 gaging stations, 19 ungaged stations, 30 partial-record flow stations, and 113 wells; and water levels for 68 observation wells. Also included are 115 crest-stage partial-record stations and 10 low-flow partial-record stations. Additional water data were collected at various sites, not part of the systematic data-collection program, and are published as miscellaneous measurements. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in Nebraska.