D.R. Rankin 1998 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 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 85 wells and piezometers for the period of record through 1997. Water-level data currently (1997) are collected annually at sites 11 and 53-57; semiannually at sites 1-10, 75, and 82; quarterly at sites 12-52, 64-74, 76, 77, 79-81, 84, and 85; monthly at sites 58-60, 78, and 83; and hourly at sites 61-63. application/pdf 10.3133/ofr98408 en U.S. Geological Survey ; Branch of Information Services [distributor], Water-level data for the Albuquerque Basin, central New Mexico, period of record through 1997 reports