Water resources data for the 1993 water year for California consist of records of stage, discharge, and water quality of streams; stage and contents in lakes and reservoirs; and water levels and water quality in wells. Volume 3 contains discharge records for 175 streamflow-gaging stations, 3 crest-stage partial-record streamflow stations and 79 miscellaneous measurement stations; stage and contents records for 45 lakes and reservoirs; water-quality records for 52 streamflow-gaging stations and 7 partial-record stations; and precipitation records for one gaging station. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and with other agencies.