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Vol. 44 (2002) No. 3 p. 199-211



The source of water supply is only groundwater in Kagamihara City, Gifu Prefecture. Although many numerical simulations have been done on the groundwater of the city till present, their results didn't match to the measured data very well. The simulation of this study increased its accuracy by using a tank model conditioned by land use and height of land making use of digital map data and especially by dealing with quantity data of pumping-up which had been ignored so far. The results quantitatively elucidated the influence of decrease in paddy field to the groundwater resource.

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