Results of Ground-Water, Surface-Water, and Water-Quality Monitoring, Black Mesa Area, Northeastern Arizona, 1990-91.

摘要

The Black Mesa monitoring program is designed to document long-term effects of ground-water pumping from the N aquifer by industrial and municipal users. The N aquifer is the major source of water in the 5,400-square-mile Black Mesa area, and the water occurs under confined and unconfined conditions. Monitoring activities include continuous and periodic measurements of (1) ground-water levels in the confined and unconfined areas of the aquifer, (2) ground-water pumpage from the confined and unconfined areas of the aquifer, (3) surface-water discharge, (4) water quality of the aquifer, and (5) surface-water quality. Since 1963, water levels in some wells completed in the confined area of the aquifer have declined as much as 70 feet.