Recent and historical data demonstrate the large share of monetary damage and fatalities that can be attributed to hydrological natural hazards (Munich Re 2015). We suggest that the specific terrain of the area can cause ambiguities in large-scale modelling, while providing plausible results in terms of the overall model performance. Nevertheless, the spatial distribution of flood characteristics varies: the 50 and 100 m results of LISFLOOD-FP and HEC-RAS misestimated flood extent and water depth in selected control areas (built-up zones). However, the coarser resolution simulations (50 and 100 m) performed virtually identically compared to the high-resolution simulations. As expected, the best results were shown by the higher-resolution grids (25 m) for both models, which is justified by the complex terrain of the area. We test 2D capabilities of LISFLOOD-FP and HEC-RAS (5.0.3), implemented using various grid sizes (25–100 m) based on 1-m DEM resolution. To receive your certificate of completion, you will need to complete a short on-line post-test and receive a passing score of 70% or higher within 1 year of purchasing the course.ġ.This study evaluates and compares two-dimensional (2D) numerical models of different complexities by testing them on a floodplain inundation event that occurred on the Secchia River (Italy).
#Hec ras 5.0 how to#
How to Earn your CEUs/PDHs and Receive Your Certificate of Completion
#Hec ras 5.0 software#
Generate depth grids and flood elevations for use in various CADD software.Learn how to add proposed conditions terrain.Learn how to add landuse roughness factors for use in 2D modeling.Learn how to add terrain, shapefiles and web imagery within HEC-RAS directly.Participants who wish to attend this webinar must be well-versed in using unsteady HEC-RAS and GIS software. Emphasis is be placed on input and developing the 2D surface for use in RAS 5.0. The webinar provides a discussion on the use of RAS Mapper in the development of the 2D model, preparing and importing background information such as Manning's n-value coverages.
This webinar focuses on a more in-depth look at the use of HEC-RAS 5.0 2D only ability. Visual depictions of the floodwave assist with creation of more detailed models and presentation to clients and for reports and submittals. Visualization of the hydraulic results is extremely useful for determining flow concentration points and areas where overflow is occurring. This ability allows the modeler to estimate and quickly view runoff patterns, flooding depths, velocities and flood extents prior to developing detailed hydrology and hydraulic models. The new version will allow the modeler to apply precipitation to the surface as well as apply hydrographs at selected locations along the boundary. HEC-RAS V5.0 has the ability to model runoff in two dimensions.
#Hec ras 5.0 series#
This webinar is part of a 3-part series on HEC-RAS. View Important System Requirements for viewing this course.