Damage and Lost Assessment (DaLA) after Giant Tidal Wave using UAV Data in Depok Beach, Parangtritis, Kretek, Bantul, Yogyakarta (Case Study: Giant Tidal Wave Period June 2016)

The phenomenon of the giant tide in the June 2016 hit several coastal areas in Indonesia. The southern regions of Java, especially the Special Region of Yogyakarta (DIY) have also been affected by the giant tidal wave. One area that is affected is Depok Beach, Parangtritis, Kretek, Bantul. The purpose of this study is to perform calculations of Damage and Loss Assessment (DaLA) in Depok Beach based on aerial photo taken using a drone. Data collection method used was field survey, taking aerial photo, and interviews with the local community. The level of damage to buildings is interpreted through aerial photography. There are 12 buildings were damaged by the giant tidal wave and are divided into three classes, namely the level of heavy damage (destroying three huts belonging to the community worth IDR 3,000,000), the degree of damage being (1 building destroyed wall, but still standing with IDR 3.500.000 worth of damage), and the level of minor damage in 8 houses eroded the foundation and house paint (losses reached IDR 5.000.000). Rate lose conducted by direct observation in the field and conduct interviews. Known at least a decline in economic conditions in the tourism sector that is shrinking turnover of houses (IDR 100,000/day) and travel businesses ATV (IDR 30.000/day). In addition, the economic downturn also occurred in the fisheries sector. Big waves for 3 days resulting in a potential loss of revenue of IDR 51.000.000.