Application of numerical models for improvement of flood preparedness

Gilles, Daniel

doi:10.17077/etd.x52rw6gi

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…The hydraulic model setup was done as preparing the drainage system in MIKE-11 and MIKE-21 conjunctively [13]. The hydraulic geometry and boundaries of the active channels and drains were incorporated in MIKE 11 and the topographic (bathymetry) grid file of the overland surface in the urban area was composed in MIKE-21 [14].…”

Section: Hydraulic Flood Inundation Simulationmentioning

confidence: 99%

Urban Flood Scaling Using Hydrologic and Hydraulic Models with Inception for Early Warning

Romeji¹,

Bharali²,

Kangjam³

2019

IJET

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Urban floods are generally characterized by surge in runoff volumes resulting in high flow peaks and water depths incurring huge socioeconomic losses. Hydrologic and hydraulic simulation tools integrated with ground survey inputs can be effectively used to simulate the movement of flood waters in intricate urban environments. Integration of hydrological-hydraulic flood models supported by geospatial tools and hydro-meteorological analysis is one effective measure to comprehend urban flooding. Numerical Weather Prediction (NWP) models as WRF aided aided by Nowcasting DWR observations is one resourceful tool for urban flash flood forecasting. The NWP forecasted precipitation data is conglomerated to a distributed hydrological model to derive flood hydrographs. The theme of the study is to establish flood runoff thresholds in one of the most flood-prone urban region of India-Guwahati city, by simulating the spatial flooding extents, developing flood runoff thresholds and to scale the flood events. Database build up for actual flooding events, ground reconciliation using ETS-RTK survey, setting up of Base Flood Elevation (BFE) points for hydraulic model integration was done. The resulting hybrid DEM (1m resolution) was adopted for building the spatially-distributed hydrological model in HEC-HMS. Model runs were carried out to derive flood runoff hydrographs and peak discharges using time series NWP-WRF and AWS data. Drainage active areas, building footprints and blockages in storm drains were laid over the high resolution 1m bathymetric grid in hydraulic MIKE FLOOD model. Flood inundation simulation using runoff hydrographs were carried out under source/sink pairs. Schematization of the simulated flood inundation layers using threshold scales of flood discharges was used to develop a scaling of the urban flooding in Guwahati, with early warning inception.

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Section: Hydraulic Flood Inundation Simulationmentioning

confidence: 99%

Urban Flood Scaling Using Hydrologic and Hydraulic Models with Inception for Early Warning

Romeji¹,

Bharali²,

Kangjam³

2019

IJET

View full text Add to dashboard Cite

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Flood hazard mapping methods: A review

Mudashiru

Sabtu

Abustan

et al. 2021

Journal of Hydrology

134

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Coupling Simulation with Multi-dimensional Models for River Flow

Ahn¹,

Hur²,

Lyu³

2013

Journal of The Korean Society of Civil Engineers

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It is essential to understand the hydraulic characteristics of rivers for increasing flood-control capacity and operating hydraulic structures efficiently. Multi-dimensional models can be the proper measures to obtain the detailed information on the hydraulic characteristics of rivers. But huge amount of data and time-consuming work have been the obstacle for applying multi-dimensional models. In this study, simulation technique with multi-dimensional model(EFDC), coupled with COSFIM and FLDWAV, has been developed and applied to the real river system for verification. Developed technique can offers spatial and grid unit information as well as line and section unit information from 1-D modeling. It is considered that the coupling simulation technique can provide useful hydraulic information for river management and treatment.

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Application of numerical models for improvement of flood preparedness

Cited by 5 publications

References 22 publications

Urban Flood Scaling Using Hydrologic and Hydraulic Models with Inception for Early Warning

Urban Flood Scaling Using Hydrologic and Hydraulic Models with Inception for Early Warning

Flood hazard mapping methods: A review

Coupling Simulation with Multi-dimensional Models for River Flow

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