Dale R. Rankin 1996 The Albuquerque Basin, located in central New Mexico, is about 100 miles long and 25 to 40 miles wide. The basin is defined as the extent of Cenozoic deposits that encompass the structural Rio Grande Rift within the basin. Drinking-water supplies throughout the Albuquerque Basin are currently (1996) obtained solely from ground-water resources. The population of the basin grew from 419,000 in 1980 to 563,600 in 1990, a 34-percent increase, and resulted in increases in water demand and ground-water pumpage. Between April 1982 and September 1983, a network of wells was established to monitor changes in ground-water levels throughout the Albuquerque Basin. Water-level data were collected at 74 wells and piezometers for the period of record through September 30, 1995, in the Albuquerque Basin. Water-level data are currently (1996) collected annually at sites 11 and 39; semiannually at sites 1-10; quarterly at sites 12, 13, 26, 36-38, 40, 43, 49-51, 64-67, 69, and 71-74; and monthly at sites 14-25, 33-35, 41, 52-63, and 68. application/pdf 10.3133/ofr96664A en U.S. Geological Survey ; Branch of Information Services [distributor], Water-level data for the Albuquerque Basin, New Mexico, period of record through September 30, 1995 reports