Abstract
For analyzing and forecasting floods in urban small rivers, it is important to get precipitation in short interval and small area because of the characteristics of rapid runoff of floods. In this paper, we study spatial and temporal characteristics of short-term precipitation based on the data from the raingauges distributed densely on the urban small basins in Tokyo. We attempt to forecast the short-term rainfall by using spatial and temporal characteristics and showed the applicability of the forcasting method proposed herein.