2010.4-2011.3 Yearbook of NILIM
Research Summary
River Department
| Reference Number | Y100311 |
| Title | Examination of upgrade of low water management with low water management simulator |
| Start-End Date | 2008.4-2011.3 |
| Division | Water Management and Dam Division |
| Author | Head, Shinya Mitsuishi Researcher, Tadahiro Toyoda |
| Summary | Recently, the amount of yearly rainfall tends to vary more and more in Japan, and there was an extremely smaller amount of rainfall than ever before in some years. Furthermore, drought damage may extend due to climatic changes caused by global warming. To take action correctly against these phenomena, it is important not only to popularize water conservation practice and supply water resources in a stable manner but also to properly manage running water. However, on a national basis, balance of surface water including water intake and drainage and balance in catchment areas including flow of ground water are not necessarily comprehended with adequate precision. To respond to this situation, balance of intake and drainage of agricultural water and urban water on which water utilization depends in not only catchment areas but also non-catchment areas and balance in catchment areas such as for ground water flow were clarified to construct an intra-catchment-area water balance evaluation model in which the Chikugo River is handled as a model river; the river supplies large amount of water for, for example, agricultural purposes and receives a strong demand for environmental conservation. In addition, an attempt was made to construct a drought adjustment system to set waster saving ratios for water sources such as the Chikugo River, other water systems, and ground water. |