AN ASSESSMENT OF THE EFFECT OF RAIN CHARACTERISTICS AGAINSTS THE VOLUME OF WATER FLOW AND THE WEIGHT OF SUSPENSION IN KARST AREA

Abstract

The watershed management needs data of hydrology circulation, e.g. volume of water flow and weight of
suspension. Rain is a main control for hydrology circulation. Rain characteristics need to be assessed for their effect
against hydrology circulation. This research was aimed to assess the effect of rain characteristics and to create
an equation of volume of water flow and weight of suspension in karst area. A combination method of exploration
and statistic calculation was used in this research. Parameters of volume of water flow and weight of suspension
was measured at several different of water levels. The data were analyzed to assess the rain characteristics that
influenced hydrology circulation. The result showed that 30 minutes maximum intensity (I 30’) affected the volume
of water flow and weight of suspension. The functions raised from this research were V = 563.646 (I 30’ )–644.063
and W = 59.660 (I 30’ )–209.758.