Study on regional characteristics of one-hour precipitation

Abstract

It is important to estimate dam design flow for dam construction. In Japan, design flow must be selected from different three approaches, probable flood in 200 years, observed maximum flow and maximum flow estimated for the subject area. But these approaches are mainly based on the observed data. In case of an extremely heavy rain, the inflow may be beyond the maximum observed value. So in this paper, based on observed precipitation data, probable maximum precipitation are calculated from maximum precipitation with specific humidity. and compared with probable precipitation in 200 years