Urban Flood Forecast by 10 Minutely Rainfall

The self-parameter regulating Tank Model (SRTM) was found to be useful for 10 minutely flood analysis in urban river basin in the preceding paper1). SRTM can find by himself two parameters, the discharge water exit height and discharge rate, according to the storage amount in the tank. If the future 10minute rainfall curve is provided, we can predict the urban flood and inundation by use of SRTM. The writer proposed a method (PRFM) 2) to depict the future 10minute rainfall curve only using the 10minute rainfall data since the rain beginning. This paper describes the experiment results of urban flood forecast using PRFM and SRTM in Majimegawa river basin, Ube. The present method can predict the inundation 100minutes earlier and the flood 170-200minutes earlier with the estimated flood water depth.

Self-parameter regulating Tank Model

10 minutely Urban Flood Forecast