STUDY OF HYDRAULIC AND SEDIMENT OF SUNTER RIVER IN FLOOD MANAGEMENT

• Main Author: Padmasari, Ajeng
• Format: Theses
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/62738
• Institution: Institut Teknologi Bandung

Sunter river flows through Jakarta Timur City with its upstream in Cimpaeun Sub-District in Depok City. Sunter river was cut by East Flood Canal that streamed directly to the sea. Cipinang Melayu in Makassar District in East Jakarta City is a one of regions in Sunter river downstream that has been flooded frequently. This study aims to obtain the section of proposed flood control, Sunter river morphology, and numbers of scoring which occured in curvature and existing capacity of Sunter river’s tunnel. Hidrology analysis conducted using software HEC-HMS with Snyder method. By return period for 25 years, obtained water discharge of 207 m3/second. Morphology anaysis conducted using daily water discharge of PDA Pondok Gede in 2013 with the maximum water discharge of 32,4 m3/second. Flood modeling and change analysis of riverbed’s elevation conducted using software HEC-RAS in existing section and proposed mitigation section. The conclusion of this study is: (1) the size of water tunnel’s capacity in Sunter river is 154,19 m3/second. The biggest amount of scoring in curvature using USACE equation is 2,06 meters. The sedimentation trends in existing geometry towards daily water discharge resulted the same result as well as trends in existing geometry towards daily water discharge without high rainfall. The sedimentation trends in geometry of proposed mitigation towards daily water discharge resulted the same result as well as towards daily water discharge without high rainfall. The amount of Sunter river sedimen in existing geometry condition with daily water discharge without rainfall is 95% larger than existing geometry condition with daily water discharge.