Probability Analysis of Stormwater Storage Real Time Control Supported by Rainfall Radar Prediction

Abstract

In this study, availability of multi-objective utilization of the flood control system for non-point sources pollutant reduction is analyzed. The big tunnel stormwater storage system in the study river basin is under construction only for flood prevention. The storage of first-flush stormwater runoff is indicated to be effective for non-point source pollutant reduction, but restricted storage volume may bring flood risk. Some control strategies were proposed under perfect rainfall prediction, but prediction error has prevented application to real stormwater storage system. In this study, the optimal set-point control of stormwater storage system is estimated by a probabilistic analysis of the impact of flooding risk derived from the rainfall prediction error.