姫川の確率洪水流量について

Abstract

The Hime river is one of the most ruined torrential rivers in Japan. The basin areaand length of the river channel are 722 km2 and 60 km respectively. People said that itwas visited by a great flood in 1912, but no data on the flood were recorded. The hy-drologic data were not collected before 1954, so only a few recent data can be availableto analysis the expected flood of the river.In this paper, firstly the author estimated the annual maximum two days amountrainfalls in the basin and considered the consequence of the above rainfalls with the aidof the time series theory. Secondly, he calculated the expected flood hydrographs bytransforming the rainfalls into the discharges through the run-off function proposed byhim and considered briefly a method of calculation of the expected flood in a riverhaving only a few hydrologic data.