MONITORING OF URBAN INUNDATION IN KASUGAI CITY AND VERIFICATION OF ANALYSIS OF INUNDATION DUE TO HEAVY RAINFALL

Abstract

 In recent years, inundation damage caused by heavy rain has occurred frequently. Numerous researchers nave developed numerical analysis models for inundation due to heavy rain. But, observation data used for verification of analysis models are insufficient. In this study, water level gauges were installed in the sewer system of the Jizo river basin in Kasugai city, Aichi prefecture, and water levels of the sewer were measured. The relationship between the rainfalls and the water levels of the sewer was examined, and the importance of measuring the water levels on the sewer was shown. In addition, the computational results using the inundation analysis model were compared with the field observation results, and the accuracy of the inundation analysis model was verified. In this study, it was clarified that the analysis model has accuracy in case of heavy rainfall.