Floodplain Mapping Using HEC-RAS and Lidar Data: A Case Study of Bistrica River (Vrbas River Basin in B&amp;H)

Milišić, Hata; Hadžić, Emina; Šuvalija, Suvada; Jahić, Emina

doi:10.1007/978-3-030-75275-0_121

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Figures 1 and 2 show the case of a complex bed in which a 1D model (for the basic bed) and a 2D hydraulic calculation model (for inundations) should be combined [25]. With the aid of this software, flood inundation and flood mapping of the low-relief area affected by flooding can be easily traced to provide a greater response to several return interval storm actions and has the ability to transform the predicted data result into a strategy opinion magnitude of submerging, according to research done on various literatures [26][27][28][29] related to floodplain mapping and the use of HEC-RAS and ArcGIS. The use of HEC-RAS software is regarded as a crucial instrument for urban and municipal expansion, emergency response plans, flood insurance, and natural research [30].…”

Section: Model Descriptionmentioning

confidence: 99%

Estimation of channel and flood plain roughness using HEC-RAS model: A case study of the Veseočica River, Bosnia and Herzegovina

Milišić,

Hadžić

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Modeling flow in open channels is essential for determining channel capacity and predicting flood events. The key segment for creating flood hazard and risk maps is a high-quality hydraulic model of the flow in the main bed with its tributaries. Several software packages have been developed for hydrodynamic simulations of flood events. In addition to the geometric characteristics of the watercourse, the equations of a one-dimensional flow model include a parameter that connects all influences that provide resistance to the flow of water. Determining the roughness of a natural channel is one of the most demanding procedures for the development of hydraulic models. Therefore, it is necessary to calibrate and validate the Manning coefficients of the channel roughness using simulation models. In the present study, the estimation of channel and floodplain roughness for the Veseočica River in Bosnia and Herzegovina was performed using the HEC-RAS hydrodynamic model. After calibration and verification of the model, flood hazard maps were created for flood waves with return periods of 20, 100, and 500 years. ArcGIS and HEC-GeoRAS software tools were used to create the flood risk maps.

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Section: Model Descriptionmentioning

confidence: 99%

Estimation of channel and flood plain roughness using HEC-RAS model: A case study of the Veseočica River, Bosnia and Herzegovina

Milišić,

Hadžić

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Effect of Bed Material on Roughness and Hydraulic Potential in Filyos River

Aksoy,

Öztürk,

Özölçer

2024

Water

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Seasonal changes, sea level rise, and global warming make flood events more frequent, which necessitates watershed management and efficient use of water resources. In this context, understanding the hydrodynamic behavior of basins is critical for the development of flood prevention strategies. The contributions of hydrological and hydraulic modeling techniques in this process are among the key determinants of sustainable water resources management. The Filyos Sub-Basin, located in the Western Black Sea Basin, stands out as one of the regions where flood risk assessment is a priority, as it has two important floodplains. This study aims to analyze the flood risk in the Filyos River Sub-Basin with hydraulic modeling methods, and to determine the Manning roughness coefficient. In the study, the parameters affecting the roughness of the river bed were analyzed using the Cowan method, and the effects of vegetation on river bed resistance were evaluated in the laboratory environment. Flood simulations were carried out for four different flow rates (Q1000, Q500, Q100 and Q50) using the HEC-RAS model, and the performance of flood protection structures were analyzed. The findings show that a significant portion of the existing protection structures are unable to meet the potential flood flows, which can cause serious damage to residential and agricultural areas. In basins with limited historical discharge data, such as the Filyos River, these findings provide important contributions to sustainable water resources management and regional planning processes. The results of the study serve as a reference for flood risk assessment, not only for the Filyos River Basin, but also for other basins with similar hydrodynamic characteristics. It is envisaged that future research, supported by larger data sets, can improve the accuracy of flood simulations. Furthermore, the Cowan method and HEC-RAS model used in this study are expected to contribute to strategic planning and engineering solutions to minimize flood risk in other watershed management projects. In future studies, we plan to further develop methodological approaches for determining the roughness coefficient, and to address applications to increase the effectiveness of flood protection structures.

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Floodplain Mapping Using HEC-RAS and Lidar Data: A Case Study of Bistrica River (Vrbas River Basin in B&H)

Cited by 2 publications

References 4 publications

Estimation of channel and flood plain roughness using HEC-RAS model: A case study of the Veseočica River, Bosnia and Herzegovina

Estimation of channel and flood plain roughness using HEC-RAS model: A case study of the Veseočica River, Bosnia and Herzegovina

Effect of Bed Material on Roughness and Hydraulic Potential in Filyos River

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