Flood hazard in Western Thessaly

In the present thesis initially, a methodological framework for the assessement of the vulnerability of areas of western Thessaly was created , namely the identification of those areas , which have a significant possibility of having adverse effects on human health, the environment, cultural heritage and economic activity in future flooding. From the resulted vulnerability maps were selected for further hydrological and hydraulic simulation the regions of Karditsa and Palamas, which showed the highest vulnerability. Then the hydrological investigation initially involved the synthesis of hydrographs, based on the method of unit hydrograph. At first unit hydrographs for each basin were estimated and control storms based on the IDF curves corresponding to a return period of T = 100 were estimated. The next step was the calculation of the losses and the net rainfall according to the Soil Conservation Service method and finally the estimation of the flood hydrographs for each type of soil moisture conditions. Next stage was the hydraulic simulation, which was performed with the pseudo 2D hydraulic model LISFLOOD-FP and thus generated the depths of water. After processing the results in GIS environment arised maps for average water depths and flood limits for the three examined cases. Finally, a flood risk assessment in the region of Karditsa was held regarding the potential negative effects on human health, the environment, the cultural heritage and the economic activity.