Integrated Assessment on Coastal Flooding Impacts to the Community Vulnerability in Muaragembong, Indonesia | Chapter 8 | Current Research on Geography, Earth Science and Environment Vol. 4

Aims: This study investigates the ecological degradation and socioeconomic vulnerability causing household-level economic losses caused by frequent coastal flooding in the Muaragembong District, Bekasi, Indonesia.

 

Study Design: This study employed a compound method to assess the physical, ecological, and socioeconomic impacts of tidal-induced coastal flooding in Muaragembong District.

 

Place and Duration of Study: The study was conducted in Muaragembong District, Bekasi, West Java Province, during the dry season in July 2019.

 

Methodology: Datasets were collected through onsite observations, interviews, and secondary datasets. Field activities included visual assessments of coastal housing and geomorphology, and structured interviews with 101 respondents drawn from community leaders, fishermen, shrimp farmers, traders, local officials, and fishery housewives. Respondents were selected using stratified random sampling from 200 households distributed across three distance zones: ≤100 m (35 households), 100–150 m (31 households), and >150 m (134 households). Secondary data included the 30 m Digital Elevation Model Nasional (DEMNAS) topography, tidal levels derived from eight major tidal constituents from the Tide Model Driver (TMD) model, and demographic statistics from the Central Bureau of Statistics (BPS-Indonesia). Flood inundation was mapped in ArcGIS by superimposing the high water level on the DEM, excluding eroded areas below 0 m and permanent water bodies. Socioeconomic vulnerability was assessed using the Structural Analysis Method (SAM) and MICMAC analysis which is based on the Indonesian government’s statistical database. Economic losses were estimated from the results of interviews using the Averting Behaviour Method and Human Capital Method.

 

Results: The results indicate that tidal flooding in Muaragembong affects approximately 2,683 ha of coastal land, primarily aquaculture areas and mangroves. The flooding imposes substantial annual household losses exceeding US$1M (IDR 15 billion), resulting from 38% of respondents with damage to houses and appliances, 43% respondents who need medical treatments, and 35% respondents experiencing income loss. The hazard also accelerates mangrove dieback, pollution accumulation, and saltwater intrusion, further decreasing local resilience.

 

Conclusion: These findings highlight that the coastal flooding in Muaragembong is not only an environmental issue but also an economic and social crisis. Integrated solutions that combine ecosystem restoration, infrastructure improvements, and community-based adaptation are crucial to reducing future risks and enhancing resilience.

 

 

Author(s) Details

Johan Risandi
Research Center for Oceanology, National Research and Innovation Agency, South Tangerang, Indonesia.

 

Ulung Jantama Wisha
Research Center for Oceanology, National Research and Innovation Agency, South Tangerang, Indonesia.

 

Terry L. Kepel
Research Center for Oceanology, National Research and Innovation Agency, South Tangerang, Indonesia.

 

Endro Soeyanto
Research Center for Oceanology, National Research and Innovation Agency, South Tangerang, Indonesia.

 

Dini Purbani
Research Center for Biota System, National Research and Innovation Agency, Cibinong, Indonesia.

 

Karlina Triana
Research Center for Oceanology, National Research and Innovation Agency, South Tangerang, Indonesia.

 

Dwi Hindarti
Research Center for Oceanology, National Research and Innovation Agency, South Tangerang, Indonesia.

 

Husen Rifai
Research Center for Industrial Economy, Services, and Trade, National Research and Innovation Agency, Jakarta, Indonesia and School of Life and Environmental Sciences, Deakin University, Princes Highway, Warrnambool VIC 3280, Australia.

 

Mira
The Center for Behavioral and Circular Economics, National Research and Innovation Agency (BRIN), Indonesia.

 

Yeti Darmayati
Research Center for Biosystematic and Evolution, National Research and Innovation Agency, Cibinong, Indonesia.

 

Agus Setiawan
Research Center for Climate and Atmosphere, National Research and Innovation Agency, South Tangerang, Indonesia.

 

Agus Dendi Rochendi
Research Center for Oceanology, National Research and Innovation Agency, South Tangerang, Indonesia.

 

Andi Egon
Oceanography, Faculty of Earth Science and Technology, Bandung Institute of Technology, Bandung, Indonesia.

 

Yessi Nirwana Kurniadi
Civil Engineering, Faculty of Civil Engineering and Planning, National Institute of Technology, Bandung, Indonesia.

 

Dian Noor Handiani
Geodetic Engineering, Faculty of Civil Engineering and Planning, National Institute of Technology, Bandung, Indonesia.

 

Muhammad Hikmat Jayawiguna
Directorate for Marine and Fisheries Training, Maritime and Fisheries Extension and Human Resources Development Agency, Ministry of Marine Affairs and Fisheries, Jakarta, Indonesia.

 

Munawar Sahabuddin
Research Center for Industrial Economy, Services, and Trade, National Research and Innovation Agency, Jakarta, Indonesia.

 

Please see the book here :- https://doi.org/10.9734/bpi/crgese/v4/6763

Determining the Impact of Coastal Flooding on Resident Living in Victoria Island, Lagos State, Nigeria | Chapter 13 | Modern Advances in Geography, Environment and Earth Sciences Vol. 6

 Coastal flooding is one of the world's most dangerous natural dangers, impacting more people and destroying more property than any other natural disaster. The purpose of this study was to see how coastal flooding affected residents on Vitoria Island in Lagos, Nigeria. The purpose of this paper is to determine the causes of coastal flooding in the Victoria Island area of Lagos State; assess the extent and implications of coastal flooding at various times; create a DEM map for the study area using GIS techniques; assess the effects of coastal flooding on residents' socioeconomic characteristics; and devise strategies for managing coastal flooding. To collect the necessary data for the study's aims, a structural questionnaire and a Geographic Information System (GIS) were employed. The coastal flooding of Victoria Island, Lagos, was studied using a 1962 topographic map and Landsat TM satellite images from 1984, ETM+ 2000, and 2011. ILWIS 3.2 and ArcGIS 3.9 were used to create a supervised digital picture categorization technique. To get the changes in the shorelines in these years, the topographic map of 1962 and the imagery of 1984 were pasted and crossed; 1984 and 2000; and 2000 and 2011 were also crossed. The findings show that there was a loss in landmass between 1962 and 1984 (31.4%), but there was a rise in landmass acquisition between 1984 and 2000 (81.89%) and 2000-2011 (62.11%). The study suggested that standard paved surfaces and drainages be built, as well as law enforcement on waste disposal, an integrated strategy to flooding management and control, and flood insurance policies, to lessen the impact of coastal flooding. The association between flooding and waste disposal was investigated using correlation. The findings reveal a substantial link between the occurrence of floods and poor waste disposal methods.

Author (S) Details

Oyinloye Michael Ajide
Department of Urban of Urban and Regional Planning, School of Environmental Technology, Federal University of Technology, Akure, Nigeria.

View Book :- https://stm.bookpi.org/MAGEES-V6/article/view/3860