The surface-water records for the 1966 water year for gaging stations, partial-record stations, and miscellaneous sites in the State of Arizona are included in this report. Records for a few pertinent gaging stations in bordering States also are included for convenience. The records were collected and computed by the Water Resources Division of the U. S. Geological Survey under the direction of H. M. Babcock, district chief.
This report is the continuation of a new method, which was started with the 1961 water year, of presenting, annually, basic data on surfacewater records by States. Through September 30, 1960, the records of discharge and stage of streams and contents and stage of lakes or reservoirs were published in the annual series of U.S. Geological Survey water-supply papers entitled "Surface Water Supply of the United States." Since 1951 there have been 20 volumes in the series; each volume covers an area whose boundaries coincide with those of certain natural drainage areas. The records for Arizona are contained in Part 9 of that series.
Since 1961, streamflow records and related data have been released by the Geological Survey in annual reports on a State-boundary basis. Distribution of these basic-data reports is limited, and they are primarily for local needs. The records later will be published in Geological Survey water-supply papers at 5-year intervals.
