MATEC Web Conf.
Volume 276, 2019International Conference on Advances in Civil and Environmental Engineering (ICAnCEE 2018)
|Number of page(s)||8|
|Section||Hydraulic and Water Resource Engineering|
|Published online||15 March 2019|
The influence of aquatic buffer characteristic of Ciliwung River from the Katulampa Weir to Manggarai Water Gate on hydrograph characteristics of design flood
Department of Civil Engineering, Universitas Indonesia, Depok, Indonesia
* Corresponding author: firstname.lastname@example.org
Increasing population in Jakarta leads to increased needs of settlements and their supporting facilities. To compensate, various methods are being undertaken, from utilization of open area to the riparian, especially in the Ciliwung River. This utilization results in the loss of riparian natural ability, which changes the river’s hydraulic condition. These riparian changes will significantly affect the roughness coefficient. The roughness coefficient is a value that is affected by channel irregularity, variation of cross-section, effects of obstructions, vegetation, and degree of meandering. Changes of the roughness coefficient will influence the velocity of the stream. The purpose of this research is to determine the effect of riparian characteristics to the roughness coefficient that affects the stream velocity, which has impact on the peak time of the hydrograph. The peak time shift can be seen in the flood hydrograph characteristics of the Ciliwung River from the Katulampa Weir to the Manggarai sluice gate. Identification of Ciliwung riparian conditions at that segment is conducted by river routing. HEC-RAS 4.1.0  application is used to obtain a design flood hydrograph at Manggarai Water Gate. To know the influence of riparian characteristics to roughness coefficient, HEC-RAS 4.1.0 simulation is done using existing and natural condition to compare the hydrographs between those two conditions. It obtains a lower peak discharge and extended duration of the hydrograph.
© Owned by the authors, published by EDP Sciences, 2012
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.