The influence of hydrological parameters on the stream floods of a mountainous area in Thessaly, Greece

摘要

The sloping area on the North and North-East of Mount Ossa, opposite Mount Olympus, in the region of Thessaly, Greece, receives considerable rainfalls. However, despite its extended natural vegetation, severe problems have arisen due to floods. The existence of these problems is mainly based on two reasons: a) on the peculiarity of rainfall events combined with the local conditions (hydrologic, geologic, land use, etc.) and b) on the existing infrastructure works. In order to analyze and interpret the phenomena of local floods, in the frame of the research program "Archimedes" which is materialized by the TEI of Larissa under the title "Spatial mapping and estimation of hydrological risk, emphasizing the floods and draughts in urban and non urban areas of Thessaly and their environmental impacts" it is essential to record, evaluate and validate various hydrologic parameters of the corresponding study area. The Geographic Information Systems (GIS) is utilized to analyze and validate the information about topographic, hydrologic, geologic and soil data, along with land cover and infrastructure. Finally, the GIS are also used to produce and map complex hydrologic parameters, which, in turn consist input data for hydrologic models as well as presentation of results.