HR: 0800h
AN: H51F-01    [Abstracts]
TI: Water Resource Assessment in Spring Catchment Areas
AU: * Green, R T
EM: rgreen@swri.edu
AF: Department of Earth, Materials, and Planetary Sciences, Geosciences and Engineering Division, Southwest Reseach Institute, 6220 Culebra, San Antonio, TX 78238, United States
AU: Winterle, J
EM: jwinterle@cnwra.swri.edu
AF: CNWRA, Geosciences and Engineering Division, Southwest Reseach Institute, 6220 Culebra, San Antonio, TX 78238, United States
AU: Painter, S
EM: spainter@cnwra.swri.edu
AF: CNWRA, Geosciences and Engineering Division, Southwest Reseach Institute, 6220 Culebra, San Antonio, TX 78238, United States
AB: Water resource management of karst spring systems is difficult due to the complex, dynamic hydraulic character of karst aquifers. Numerical models are typically used to evaluate the impact of pumping within watersheds, however conventional numerical groundwater models are not capable of simultaneously replicating the rapid response of the conduits and the slow response of the rock matrix in karst aquifers. Because of this limitation, evaluating the impact of pumping on spring discharge is difficult when significant water is withdrawn at wells located in the catchment area of the spring. A recently-developed dual conductivity karst aquifer flow modeling tool, MODFLOW-DCM, is used to simulate discharge from the Blue Springs system located in the Floridan Aquifer to allow assessment of the impact of pumping in the spring catchment area. The ability of MODEFLOW-DCM to simultaneously accommodate both rapid turbulent flow in conduits and slow diffuse flow through the matrix allows for more representative assessment of the water resources in the spring catchment area.
DE: 1804 Catchment
DE: 1829 Groundwater hydrology
DE: 1846 Model calibration (3333)
DE: 1884 Water supply
DE: 6334 Regional planning (1880)
SC: Hydrology [H]
MN: 2007 Joint Assembly