In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929 a geodetic datum derived from a general adjustment of the first-order level nets of the United States and Canada, formerly called Sea Level Datum of 1929.

No abstract

No abstract

No abstract

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 groundwater 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 groundwater pumpage. From April 1982 through September 1983, a network of wells was established to monitor changes in groundwater levels throughout the Albuquerque Basin. Waterlevel data are currently (1998) collected at 88 wells and piezometers. This report includes waterlevel data from most of these sites for the period of