2019 Pinal Model and 100-Year Assured Water Supply Projection

This report documents ADWR's 2019 Pinal Model, which includes annual updates, structural and other modifications to the 2014 Pinal groundwater flow model, and results from a 100-year Assured Water Supply (AWS) projection. The recent structural modifications to the 2019 Pinal AMA groundwater flow model were made mainly to address differences found between the simulated thickness of the aquifer materials and the thickness described in numerous well drillers' logs. The structural modifications required adjustments to maintain a comparably low amount of model error.