A Quantitative Evaluation on the Influence of Hyporheic Zone Extraction on Water Resources in the Gaoping River Watershed

  • 劉 芷昂

Student thesis: Doctoral Thesis

Abstract

Due to the inherent topography and climate limitations the storage of freshwater resources has long been a central issue in Taiwan In addition extreme climate has increasingly led surface water to rapidly become turbid after heavy rainfalls Thus water shortages in Taiwan occur not only in the dry season but also in the wet season Hyporheic flow resources have gradually begun to receive scientific attention because they can be used to ensure water resource supply stability In Taiwan hyporheic flow has become an important alternate water resource for the future Therefore the current study was undertaken to investigate how the pumping of hyporheic flow affects surface water and groundwater as well as to determine the amount of interaction among the water resources occurring between each station The study area is selected to be part of the Gaoping River Watershed The Gaoping River Weir is the main surface water station on the Gaoping River Some hyporheic flow pumping stations are expected to be built in an upper stream of the Gaoping River Weir in a few years We applied the MODFLOW numerical simulation software to establish a hydrogeological model of the Gaoping River watershed and then simulated the scenarios of the hyporheic flow water taking for the stations for different scenarios Our results provided a quantitative analysis of the impact of hyporheic flow taking from surface water and groundwater as well as of the amount of interaction among water resources between each station Thus this work serves as a physical basis for the proposed water taking amount from each station and the possible joint operation of surface water and groundwater resources in both wet and dry seasons
Date of Award2019
Original languageEnglish
SupervisorWei-Cheng Lo (Supervisor)

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