Digital Terrain Model by airborne LIDAR technique: an essential tool for hydrologic risks assessment

Simulations of the hydrological risks and thus the decisions of assessment strategies are crucial in the context of extreme meteorological events due to the consequences of the fast changes in the climate. The remote sensing methods as LIDAR backscatter technique are allowing the elaboration of a high precision (5cm vertical and 3 points/m2 horizontal resolutions) Digital Terrain Model (DTM) as basis of the hydrological modeling. Here is presented the airborne LIDAR technique, the usefulness of the DTM outputs for hydrologic applications and the potential application for the Romanian Danube Flood Plain assessment strategy.