ABSTRACT
ABSTRACT: Shallow groundwater is the primary water source of the Dogo Plain, and it depends on infiltration from the Shigenobu-gawa river. This research attempts to model this groundwater system, paying attention to the distribution of the segire (dry riverbed areas) and izumi (springs) along the Shigenobu-gawa. Although it was a preliminary examination based on limited data, it has resulted in a model being built that can reproduce the segire and izumi distribution, reflecting the local hydrogeological structure. A preliminary examination of the influence of climate change using this model was also carried out. A fall in the groundwater table accompanying changes in recharge conditions was predicted. This suggests that, to prepare for the future, it is necessary to clarify the details of the hydrogeological features of the deep aquifer of the Dogo Plain.
