Abstract
The objectives of this study are to analyze the relationship between the long-term stream discharge and the change of groundwater use and to estimate the potential usable water resources due to the change of groundwater use. The watershed model SWMM-GE, which considers the aquifer-stream interaction, is used to calculate the long-term stream discharge of the Gapcheon watershed in Korea according to the increasing groundwater use. In the results, the annual runoff discharge is absolutely affected by the annual rainfall, but the annual baseflow is less affected than the annual runoff discharge. The annual baseflow is decreased by increasing the groundwater use, but the potential usable water resources are increased by increasing the groundwater use. In case groundwater use is doubled, the potential usable water resources are increased by about 44% of pumping case. Excessive groundwater use, however, could dry up some streams or make instream flow insufficient. Thus, those results should be considered to determine suitable amount of ground water use.
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Jun, S., Park, Jh., Lee, W. et al. The changes in potential usable water resources by increasing the amount of groundwater use: the case of Gapcheon watershed in Korea. Geosci J 14, 33–39 (2010). https://doi.org/10.1007/s12303-010-0004-6
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DOI: https://doi.org/10.1007/s12303-010-0004-6