Item

Abstract

Owing to the emergent situation under earthquake, flood and so on, the water outage is one of serious and grave damage on the suffers. Main counter measure for water outage is emergency water-supply by a water tender. When the wide area is damaged, the capacity of water tender is not enough for water demand of suffers. Groundwater has a potential to support a part of water demand. On the other hand, the intake of groundwater has been limited to avoid the land subsidence so far. Recently, the wise usage of groundwater for risk managed reliable supply of water is now considering. Here, we try to develop the scenario for safe use of groundwater during post-disaster period over the Kanto Plain including Tokyo, the capital of Japan, and Nobi Plain including Nagoya, Japan. Those plains are at risk of earthquake and drought. The shortage of water resources was calculated as the amount of demand minus the amount of supply. This water supply interruption rate is high in areas at risk of liquefaction, where the risk of water pipe breakage is high, so the calculation was made separately from other areas. The demand for water for domestic use was based on the demand for water for domestic use in each time series assumed in the disaster prevention plan by the Japanese government. These calculations were conducted for each municipality category, and finally weighted and allocated with reference to land use to create a 250m mesh of water shortage.