MODFLOW analyses are a robust 3-dimensional approach to examining the cause or effect of changes in the groundwater regime. MODFLOW can be used to model the effects of groundwater flow over large areas, for example, from regional pumping, reservoirs, impoundments, and flooded underground cavities. Also, MODFLOW analyses can be used in forensic or design capacities to examine the effects of changing groundwater conditions. MEA has experience with performing MODFLOW analyses in the modeling and predicting of groundwater conditions.