Spatial and Temporal Distribution of Floods

摘要: Flood mapping and monitoring was performed using both Landsat Radarsat data from 1988 to 2009. Multi-temporal satellite were digitally classified a threshold algorithm determine the spatial temporal distribution of floods. In addition, flood depths calculated highest water-level with DEM. Synthetic depth–damage curves prepared for three housing categories major roads. maps evaluated images ground truth data. It found that 25% study area is flooded every year which could rise more than 40% during abnormal events such as those occurred in 1998. damage estimations revealed greatest katcha houses rather semi-pucca pucca houses. Variable accuracies satellite-derived maps; however, overall accuracy radar-based classifications.