Revised On: Feb. 8, 2023 - 3:24 p.m.

According to data collected from Salt River Project, the regional groundwater flow direction beneath the site has changed from southwest (1948, 1953), to northeast (1960, 1973), to northwest (1968), and to the west (1978). The direction of groundwater flow, as of February 2015 was 0.003 feet per foot (ft/ft) to the west northwest.

Historically, groundwater occurs at a depth of approximately 75 feet below the ground surface. Groundwater level monitoring in February 2015 has shown that, since July 2007, groundwater levels have declined by an average of approximately 2 inches.