NORMALIZATION PLANNING FOR UPPER-CITARIK RIVER BY USING HEC-RAS 4.1.0 SIMULATION

• Main Author: FADHLI (NIM : 15309056), RIZKYAL
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/24074
• Institution: Institut Teknologi Bandung

Floods caused by overflowing of Citarik river upstream through Bandung regency resulted in huge losses including of physical losses and non-physical losses. The overflowing of Citarik River was caused by the river no longer able to accommodate the flood discharge that occurs . Severe sedimentation caused river siltation experience that can not accommodate the current flow of high rainfall. This encourages the analysis and planning for Citarik River normalization using the modeling program HEC - RAS 4.1.0. Based on simulation results, (steadyflow analysis) using flood discharge plans 20-year return period (15.461 m3/s) that most of the cross-section was flooded and did not meet the height <br /> <br /> <br /> requirement of 0.50 meters surveillance. The highest flood height reaches 2.15 meters tall while the lowest flood is equal to 0.03 meters. Normalization planning <br /> <br /> <br /> is done on the entire cross section of the river to form a single trapezoidal crosssection, channel depth of 3 meters, the slope of the line 2.0 and 1.5, and the width <br /> <br /> <br /> varies between 15-17 meters. Based on the simulation results of the new sectional, found that all of the cross-section able to accommodate the 20-year flood <br /> <br /> <br /> discharge plan and meet the criteria for surveillance by 0.5 meters high. Average height difference between the riverbank and the water level in the entire crosssection <br /> <br /> <br /> is 1.60 meters.