IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Flood risk management and adaptation : Comparative analysis of flooding area calculation through different geomatic methods
Comparative analysis of flooding area calculation through different geomatic methods
The surface water flow on safety and/or minimal risk conditions to people and property requires an appropriate
assessment and management of the level of exposure to natural hazards of flooding. Consequently, it is essential to
obtain an exhaustive knowledge of the area and the flow. Among the many techniques for acquiring geospatial
information, the degree of detail achieved in 3D terrain modeling has allowed a significant increase in the knowledge of
hydraulic properties in open channels and rivers. This research is aimed to analyze the influence of different riverbed 3D
models building in the estimation and simulation of the surface occupied by the floods. The flooding risk calculation in a
watershed can be comparatively estimated using different techniques geospatial data acquisition. For this, different grid
configurations are compared by LiDAR techniques, and points cloud from Photogrammetry. The results show that there
are significant differences in the occupation surfaces of flooding, depending on the 3D reconstruction technique.
File Size : 506,001 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Flood risk management and adaptation
Date Published : 20/08/2015
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