Estimation of Peak Flood Discharge for an Ungauged River and Application of 1D Hec-Ras Model in Design of Water Levels

Hadžić, Emina; Mulaomorević-Šeta, Ajla; Milišić, Hata; Lazović, Nerma

doi:10.1007/978-3-319-71321-2_52

Cited by 5 publications

(3 citation statements)

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“…HEC‐RAS is a well‐known hydraulic modelling program that includes the following features: 1D steady flow and 1D and 2D unsteady flow simulations, sediment transport computations and water quality analysis (USACE, 2020). The 1D model is widely used to calculate water levels for steady and unsteady river flow regimes (Hadžić et al, 2018; Huţanu et al, 2020).…”

Section: Methodsmentioning

confidence: 99%

Development of an integrated modelling framework to evaluate impacts of pressures on habitat conditions and riverine biota

Chattopadhyay,

Szałkiewicz,

Dytkiewicz

et al. 2023

Ecohydrology

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It is becoming extremely challenging to protect the structural and functional integrity of freshwater ecosystems, as many ecological systems face pressures from climate change, population growth and other environmental impacts. However, existing approaches of assessing impacts of external stressors to habitat conditions often neglect the long‐term hydrological changes. This study aimed to develop an integrated modelling framework to assess impacts of different stressors on reach‐scale habitat conditions for benthic macroinvertebrates in a temperate lowland river in central Poland. We coupled hydrological (SWAT+), hydraulic (HEC‐RAS 1D and SRH‐2D) and habitat (CASiMiR) models to predict the response of habitat suitability for the functional group of filter feeders to changes in the catchment for a 135‐m section of the Jeziorka river. Setting up and calibrating individual models required extensive field data collection (e.g., bathymetry field surveys, gauging water levels, discharge and flow velocity measurements and biological sampling). The performance of individual models in simulating discharge, water levels and depth/flow velocity was assessed as satisfactory according to literature. The modelling chain was then applied to compare the effects of three flow scenarios (average, low and high flows). The results showed an overall high value of hydraulic habitat suitability index for filter feeders, with moderately and severely lower values for low and high flow scenario, respectively. The implemented modelling framework performed well could be applied to examine the impacts of climate change and other anthropogenic stressors on reach‐scale habitat conditions. Its practical implementation could be beneficial towards sustainable water resources and environmental flow regime development.

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Section: Methodsmentioning

confidence: 99%

Development of an integrated modelling framework to evaluate impacts of pressures on habitat conditions and riverine biota

Chattopadhyay,

Szałkiewicz,

Dytkiewicz

et al. 2023

Ecohydrology

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“…Unfortunately, there is a very large range of situations that fall into a gray area, and one could list the positive and negative aspects of both methodologies for specific applications [17]. In river flood analysis, both the two-dimensional model [18,19] and the 1D model of HEC-RAS have been extensively employed [20][21][22]. The most recent version of the HEC-RAS 5.0.7 software package now includes the capability to execute combined 1D and 2D unsteady flow routing inside the unsteady flow model.…”

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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“…Digunakan data debit rancangan selama 24 jam dengan asumsi bahwa hujan terdistribusi selama satu hari penuh dan ingin melihat dampak yang ditimbulkan apabila hujan terjadi selama satu hari penuh. Pemodelan Hidraulika Dengan HEC-RAS 5.0.7 HEC-RAS atau (Hydrological Engineering Center -River Analysis System) adalah sebuah perangkat lunak untuk menganalisis berbagai permasalahan hidrolika, seperti prediksi/estimasi banjir, analisis kapasitas sungai, pemantauan kedalaman di setiap titik sungai, dan pemilihan lokasi untuk membangun struktur air (seperti bendungan dan stasiun pemompaan) [14].…”

Section: Debit Total Rancanganunclassified

Aplikasi Program HEC-RAS 5.0.7 untuk Pemodelan Banjir di Sub-sub DAS Martapura Kabupaten Banjar

Wijayanto

Helda

2022

JSE

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Rainfall data is one of cause factor for flooding in some areas in Indonesia. An extreme rainfall event occurred in the end of 2020 until early 2021 have resulted a severe flooding in West Martapura District, Banjar Regency, South Kalimantan Province. As a tributary to Barito River, Martapura River experienced high water level that gave negative impact to the surrounding areas. HEC-RAS (Hydrologic Engineering Center's River Analysis System) 5.0.7 software combined with ArcGIS 10.8 were applied to model flooding spatially. Mononobe method was used to calculate rainfall intensity for 5-year, 50-year, and 100-year return periods. From the results of the flood modeling, the maximum flood water level elevation was obtained as deep as 3.8 m (5-year return period), 5.2 m (50-year return period), and 9.6 m (100-year return period) with a maximum flood discharge of 34.84 m3/s (5-year return period), 81.68 m3/s (50-year return period), and 142.64 m3/s (100-year return period), respectively.

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Estimation of Peak Flood Discharge for an Ungauged River and Application of 1D Hec-Ras Model in Design of Water Levels

Cited by 5 publications

References 0 publications

Development of an integrated modelling framework to evaluate impacts of pressures on habitat conditions and riverine biota

Development of an integrated modelling framework to evaluate impacts of pressures on habitat conditions and riverine biota

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

Aplikasi Program HEC-RAS 5.0.7 untuk Pemodelan Banjir di Sub-sub DAS Martapura Kabupaten Banjar

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