Using Hec-Ras Software to Analyze 6 Parameters Regarding the Manifestation of Flood Events. A Case Study of Baseu River Lowland, Ne Romania

Abstract

Floods continuously affect an impressive number of communities, both on a global scale and on a regional scale. Studying and understanding this phenomenon through management decisions can significantly reduce the damage that this kind of phenomenon can cause on natural communities and territories. Starting from this premise, the European Parliament implemented on October 23, 2007 the 2007/60 EC Directive, which requires Member States to create hazard maps and flood risk maps, and on the basis of these maps to implement the flood risk management plan for each river basin. This Directive provides that the management plans should be done at the level of basins and sub-basins, but does not mention the rank to which such a plan should be developed, which may endanger certain communities located on the course of small rivers. The Başeu river basin is administratively part of the Prut-Barlad hydrographic area. Although the Prut-Barlad hydrographic area has a management plan, it was made only for the main rivers, the Baseu river being excluded. The present study aims to analyze 6 important parameters for understanding the flood events (depth, velocity, shear stress, arrival time, duration and recession) and the development of hydrological risk maps.

Using 2D HEC-RAS Modeling and Embankment Dam Break Scenario for Assessing the Flood Control Capacity of a Multi-Reservoir System (NE Romania)

“…To analyze the impact of the flood created by the hypothetical dam breach, depth and velocity (raster files) were needed. To analyze the extent of the flood, we exported the inundation boundary (vector file) from RAS Mapper [25,80].…”