Imputing Rainfall Data for Flood Simulation in Citarum River, West Java

The central role of the Citarum River as a buffer to meet needs agricultural irrigation, industrial activities, and raw water in six surrounding districts, including 80% population Jakarta, has experienced decline conditions from up-downstream. That way, lot data is available regarding adaptation floods, drought, other source functions for an integrated concept Citarum. focus study Central Zone by using 5 10 years rainfall intensity (time series), actualizing runoff coefficient, Intensity Duration Frequency (IDF) modeling formulation peak discharge. This achievement realized applying Gumbel's Method Mononobe's Equation optimizing 2D HEC-RAS software. Experimental 2010 2019 indicated that November was highest 448.07 mm/hour, while lowest July with value 52.50 mm/hour. simulation results show increase flow rate up 11%, which means it affects river's capacity accommodate overflow load. Furthermore, this equipped map flood-affected areas discharge scenario November.