抄録
This study examined a peak discharge reduction function and a flood adjustment ability of flood control facility and basin management facility through a runoff analysis for recent major floods in Yamato River basin in Nara Prefecture, where see a rapid urbanization, by application of a hydrological distributed runoff model.As a result, the discharge reduction effect of flood control and basin management facilitation and occurrence of inland flood was estimated as approximately 15-20%. Also, it was estimated that basin management facility has equal or more effectiveness for flood adjustment than flood control facilities. Furthermore, it was indicated that the flood adjustment effect might be further improved by optimizing excess capacity of facility to the leveraged outflow facility specifications.
