Peak flood volume and its suspended sediment at various rainfall in Kedungbulus catchment in Gombong, Central Java, Indonesia

Flood is a natural disaster that frequently happens and causes many material immaterial losses. During flooding, the suspended sediment carried along by streamflow. The amount of transported varies depends on anthropogenic factors. Limited studies have been conducted regarding relationship between peak flood volume its content. Therefore, study with purpose to understand rainfall characteristics, volume, was undertaken in Kedungbulus Catchment Gombong, Central Java, Indonesia. size catchment 37.8 km2. To collect required data, an automatic stream water level recorder installed outlet catchment. In addition, two conventional rain gauges were set up inside Hydrograph statistical analysis 2016-2017 data. results showed during period, highest occurred October 8, 2016. duration 490 minutes, time 135 minutes. At 5,091,221 m3, around 2,394 tons. Rainfall depth significantly affects sediment. intensity Antecedent Soil Moisture Content (ASMC) weakly correlate