Poster Number 230
See more from this Division: Topical Sessions
See more from this Session: Innovative Methods for Investigating Flow and Transport in Karst Systems (Posters)
Abstract:
During most of the base-flow monitoring, specific conductivities in the shallow monitoring wells were higher than those in the deep wells, possibly reflecting evapotranspiration during times of little recharge. During minor rain events, dips in specific conductivity were seen in two of the shallow wells. These decreases are interpreted as recharge reaching the water table and diluting the matrix water. Response to a March 2008 storm event was variable in the monitoring wells. At one pair of monitoring wells, specific conductivity greatly increased two days after the storm. Other wells showed little response or slowly increasing specific conductivity. Perturbations due to water sampling also varied among the monitoring wells, with some wells showing little change during pumping and others showing step changes in specific conductivity that slowly decayed with time following sampling. These results suggest a complex flow system related to the heterogeneity of this karst aquifer, with fluids of different compositions mixed by natural perturbations or pumping.
See more from this Division: Topical Sessions
See more from this Session: Innovative Methods for Investigating Flow and Transport in Karst Systems (Posters)