Prevention of Coastal Erosion-Sediment using the Building with Nature Approach in the Coastal of Indramayu

Abstract

Research that aims to obtain a model for preventing coastal erosion-sedimentation using a building with nature approach has been carried out on the coast of Indramayu Regency during August-October 2018. Physical building modeling data were obtained through bathymetry surveys, and sediment and bottom sediment concentrations as well as tracing literature on tidal elevation and wind speed and direction. Other primary data, namely the availability of building materials, socio-economic and institutional conditions were obtained through a survey of related informants. The modeling results use the Coastal Modeling System 4.1 release cms2d_v4p1r37 model which is free software from USACE-CIRP. Based on a 15-day simulation and throughout the year (west season, east season and transitional season) it shows the effectiveness of the building in the form of raised soil originating from sedimentation of approximately 1 hectare which is then functioned as an ecotourism area. Ampel bamboo (Bambusa vulgaris) is planted on the banks of the Sigadang River along the 1000 meters to meet the needs of building maintenance in the future. Maintenance of the building as well as its adoption in other locations in the future as well as the cultivation of ampel bamboo is carried out in a participatory manner by the community through the Community Group of Conservation (KOMPAK).