THE RELATIONSHIP BETWEEN MAXIMUM PRECIPITATIONS BASED ON PRECIPITATION DATA RECORDED AT DIFFERENT INTERVAL FOR EACH RAINFALL EVENT

Abstract

Maximum 1-, 3-, 6-, 12-, and 24-hour precipitations are important hydrological variables in hydrological engineering. This paper describes the relationship between maximum precipitations based on precipitation data recorded at an interval of one hour, ten minutes, and five minutes for each rainfall event. Ratios of maximum 1-, 3-, 6-, 12-and 24-hour precipitations recorded at an interval of five minutes to ones recorded at an interval of one hour are 1.164, 1.043, 1.022, 1.011 and 1.006 respectively. Similarly ratios of maximum 1-, 3-, 6-, 12-and 24-hour precipitations recorded at an interval of five minutes to ones recorded at an interval of ten minutes are 1.012, 1.005, 1.003, 1.001 and 1.001.