Effectivity of micro drainage system as part of macro drainage system: A case study of Kelapa Gading, North Jakarta

Ari Kusumawardhani,Dwita Sutjiningsih,Evi Anggraheni,M Olivia,I.M Agus Ariawan,G Pringgana,M Infantri Yekti,A Marto,I.D Ketut Sudarsana,K Yamamoto,G Wibisono,D Andrio,R Ridwan,E Saputra,D Wishart

doi:10.1051/matecconf/201927604021

Abstract

Flooding is one of the problems that Jakarta faces every year. To handle the issue, the government took action to build the East Flood Canal. The canal construction is expected to reduce flooding, especially in the east and north region of Jakarta. However, the construction did not make the area immediately free of flood risk. Previous study (Susanti, 2017) showed that even with the existence of the East Flood Canal, potential inundations may still happen, specifically in the Cakung Lama area. In 2017, there were still several inundation points in the Sunter area, especially in Kelapa Gading. This research aims to identify the cause of inundations in the area by evaluating channel capacity in the micro drainage system in Kelapa Gading using hydrological model HEC-RAS 4.1.0 and WinTR. The simulation results showed that several channels in the system cannot accommodate the inflow, hence causing inundation in some areas in the Kelapa Gading area. According to the simulation results, it can be concluded that the micro drainage system in Kelapa Gading is not effective to accommodate the inflow.

Highlights

Flooding occurs in Jakarta every year [1]
To deal with the problem, one of the actions taken by the government was construction of East Flood Canal
The result of the previous study on the macro drainage system in the service area of the East Flood Canal showed that the cause of the inundation in the area is not because of the system

Summary

Introduction

Flooding occurs in Jakarta every year [1]. A large scale of floods occurs approximately once every five years in the Ciliwung River Basin [2]. The result of the previous study on the macro drainage system in the service area of the East Flood Canal showed that the cause of the inundation in the area is not because of the system. The result of the HEC-RAS 4.1.0 simulation will show the comparison between the water level based on the peak flow from WinTR-20 ver 3.10 with the existing channel profile. If the effectivity is less than 100%, it can be said that the existing channel cannot accommodate the flood discharge and causes an inundation From these results, it is hen seen whether the cause of the flooding area is caused by the micro drainage system

Results and discussion

Gumbel Method Log Pearson Type III Method

Conclusions