Simulation of groundwater withdrawal scenarios for the Redwall-Muav and Coconino Aquifer Systems of northern and central Arizona

Abstract

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Groundwater and surface-water data from the C-aquifer monitoring program, Northeastern Arizona, 2012–2019

“…For the maximum pumping scenario, Clear Creek has an estimated decrease in flow of 0.08 cubic feet per second (ft 3 /s) and the Little Colorado River has an estimated decrease in flow of 0.2 ft 3 /s (Southwest Groundwater Consultants, 2015). Pool (2016) uses the Northern Arizona Regional Groundwater Flow Model (Pool and others, 2011) to evaluate changes in groundwater levels and groundwater discharge to streams and springs from the C and Redwall-Muav aquifers. Based on a scenario with no major changes in groundwater use except for an increase in demand based on population projections, by 2105 groundwater levels are predicted to decline more than 100 ft near major withdrawal wells (such as the City of Flagstaff), rise more than 100 ft near recharge areas (such as the City of Flagstaff Waste-Water Treatment Plants), decline between 10 and 50 ft near Leupp and Red Gap Ranch, and decline 1 to 5 ft for much of the remaining study area.…”