Simulation of the Effects of Groundwater Withdrawals from the Floridan Aquifer System in Volusia County and Vicinity. Technical Publication SJ2006-4

摘要

In 1989, the Florida state Legislature mandated that all water management districts within the state perform an exhaustive assessment of available water resource supplies and associated demands. An outcome of this assessment was the designation of water resource caution areas, defined as areas where current or future water resources are or are projected to become insufficient with respect to satisfaction of resource demands. As a result, considerable portions of east-central Florida, including virtually all of Volusia County, were designated as water resource caution areas. The development of groundwater simulation models was a critical component in the designation of these water resource caution areas. A groundwater flow model for the Volusia County vicinity in east-central Florida was developed and applied to facilitate the evaluation of the water resources within this area. The project area encompasses virtually all of Volusia County in east-central Florida, parts of southern Flagler, eastern Lake, and northern Seminole counties, and small portions of Putnam, Orange, and Brevard counties. A conceptual model of groundwater flow within the surficial and Floridan aquifer systems was developed to facilitate the processing of hydrogeologic data and the model calibration process. The model was calibrated to both predevelopment hydrologic conditions and to average 1995 conditions. The calibrated model was used to predict changes in groundwater levels and flow rates between 1995 and the year 2020.