Study on Rainfall Runoff Prediction System for Radar Raingauge

Abstract

Radar rainfall gauge gives a better information of rainfall distribution than the conventional Thiesen method. In the present study, a system for the prediction of rainfall-runoff is constructed. This system includes packages to obtain a channel network from the digital map, to combine the radar rainfall information with the channel network, and to calculate the runoff using the kinematic wave model.
This paper described the each package of the system. And parameters of the kinematic wave model were obtained for 20 runoff events in 1990 and 91. Application of this rainfall runoff prediction system to dam reservoiurs is possible with several minor improvements of the system.