Water-resources data for the 1975 water year for New Hampshire and Vermont consist of records of stage, discharge and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water quality of wells. This report contains discharge records for 91 gaging stations; stage records for 5 lakes; month end contents for 27 lakes and reservoirs; water-quality data for 5 continuing stations and 16 partial-record stations; and water levels for 17 wells. Also included are data for 42 crest-stage 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. A few pertinent stations (not included above) in the bordering states and in the Province of Quebec are also included in this report. The data represent that portion of the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in New Hampshire and Vermont.