The Effect of Building With Nature Structures on The Estuary Mitigation: Study Case Muara Beting Beach
Siska Wulandari (1), Eka Oktariyanto Nugroho (2), Muhammad Syahril Badri Kusuma (2), Joko Nugroho (2), Arno Adi Kuntoro (2), M Cahyono (2), Widyaningtias (2), Nita Yuanita (3), Alamsyah Kurniawan (3), Dian Rosleine (4), Alfandias Saurena (5) and Fatma Nurkhaerani (6)

(1)Magister Study Program of Water Resource Engineering, Study Program of Civil Engineering, Bandung Institute of Technology, Indonesia
(2) Water Resources Engineering Research Group, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Indonesia
(3) Coastal Engineering Research Group, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Indonesia
(4) Ecology Research Group, School of Life Sciences and Technology, Institut Teknologi Bandung, Indonesia
(5) Ministry of Public Works and Housing, Jalan Pattimura 20, Jakarta, Indonesia
(6) Faculty of Engineering, Singaperbangsa University Karawang, Indonesia

Abstract

Erosion has become a big problem in the Muara Beting coastal area, Indonesia. The coastal erosion processes gradually affect the gradual decrease of mangrove land. That process causes the land to be extremely eroded and become closer to the Citarum River. The seawater intrusion occurs within the decreasing land mangroves. It creates a serious problem with freshwater needs. If erosion persists, the increased seawater intrusion might result in the convergence of the pond area with the Citarum River. This research aims to simulate how the ^Building with Nature^ building can be applied as a mitigation strategy. Data was collected through field surveys, satellite image analysis, and library observations to evaluate the impact of the proposed solutions. The simulations used Delft3D software with bathymetry, sediment characteristics, wind, tide, and discharge input data. Apart from simulating natural conditions, several scenarios were also arranged based on the placement of permeable structures combined with the floodway. The best scenario was selected from several simulated scenarios where sedimentation could form in the eroded area. This study^s findings will be intended to assist Muara Beting^s coastal community in reconstructing pond land that has been harmed by coastal erosion, allowing the locals to carry on with their pond-related livelihoods.

Keywords: Building with Nature- coastal erosion- mangroves- mitigation- permeable structures

Topic: Engineering