Elaboration of Products Derived from the Eo Data

The risk of flooding due to runoff is a major concern in many areas around the globe and especially in Romania. The modern management of spatial data related of river flooding largely relies on the functional facilities supplied by the Geographic Information System (GIS) info-layers, combined with Earth Observation (EO) data-derived information, Digital Elevation Models (DEM) and hydrological modeling. The paper assumes this multidisciplinary approach, in view to establish a methodology, which should further allow the elaboration of products useful for flooding risk analysis, such as: more accurate updated maps of land cover/land use, comprehensive thematic maps at various spatial scales with the extent of the flooded areas and the affected zones, maps of the hazard prone areas, etc. The supplying of the products, extracted directly from EO data or obtained after regrouping digitizing and integrating them in a GIS environment, has highly contributed to the elaboration of precise thematic maps at different scales, with corresponding generalizing levels. There are stressed the facilities supplied by the geo-referenced information and the satellite images to manage floodings during their characteristic phases: before, during and after floodings; accent is laid on the pre and post-crisis phases. The application was developed for the Arges hydrographic basin in Romania, a critical area, keeping in mind that it withholds many localities, including the capital and also important economic centers.