Water resources data for the 1976 water year for Louisiana consist of records of stage, discharge, and water quality of streams; water quality of lakes; and water levels and water quality for wells. This report contains discharge records for 22 gaging stations; stage only records for 12 gaging stations; water quality for 61 continuous, daily or bi-weekly stations, 240 miscellaneous stations, and 256 wells; and water levels for 387 observation wells. Also included are data for 31 crest-stage partial-record stations and 65 flood-profile partial-record stations. Additional water data were collected at 10 various sites, not part of the systematic data-collection program, and are published as miscellaneous measurements. Records for a few pertinent stations in bordering States are also included in this report. 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 Louisiana.