Results 71 to 80 of about 196,010 (225)

A Scalable Approach for Identification of Reach‐Scale Hydraulic Processes to Support Flood Prediction Models

JAWRA Journal of the American Water Resources Association, Volume 62, Issue 4, August 2026.
ABSTRACT Simplification of channel routing models results in errors in streamflow predictions and uncertain flood forecasts. Conceptual frameworks have been proposed to prescribe a heterogeneous routing scheme that incorporates greater complexity where necessary, but their implementation is constrained by the need for hydraulic data that is not widely ...
Rebecca M. Diehl, David Baude, Kristen L. Underwood, Julianne E. Scamardo, Kehinde Ojasanya, Beverley C. Wemple   +5 more
wiley   +1 more source

Extreme Events Reshape Flood Hazards Through Sediment‐Induced Channel Change in Southern Taiwan

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Extreme precipitation events can cause long‐lasting changes to river systems, altering flood hazards beyond the initial disaster. We investigate how Typhoon Morakot (2009) impacted flood inundation patterns across four river catchments in southern Taiwan.
B. Santos, B. Yanites, C. DeLisle, R. Chuang, Y. Lin   +4 more
wiley   +1 more source

A complete methodology to assess hydraulic risk in small ungauged catchments based on HEC-RAS 2D Rain-On-Grid simulations

Natural Hazards
This paper explores the use of the rain-on-grid (or direct rainfall) method for flood risk assessment at a basin scale. The method is particularly useful for rural catchments with small vertical variations and complex interactions with man-made obstacles
W. Ennouini, A. Fenocchi, G. Petaccia, E. Persi, S. Sibilla   +4 more
semanticscholar   +1 more source

Modelling Flood Hazards Impacted by Ungauged River in Urbanised Area Using HEC-RAS and GIS

Nigerian Journal of Technological Development, 2023
Ilorin City is located downstream of Asa, Oyun and Awun River Basins. The Asa River is a major river that traverses the city and divides the metropolitan area into east and west, almost equally.
Romoke Ojo, Abdulganiyu Yusuf, Mohammed Oludare Idrees, Abdul-Lateef Balogun, Isa B. Salami, Ojogbane S. Sani   +5 more
doaj  

FLOOD INUNDATION MAPPING BY GIS AND A HYDRAULIC MODEL (HEC RAS): A CASE STUDY OF AKARCAY BOLVADIN SUBBASIN, IN TURKEY [PDF]

Acta Geobalcanica, 2016
In this study, it is aimed to constitute flood inundation maps for Akarcay Bolvadin Subbasin. Topographic data of study area is defined for hydraulic model by sectioning along the river on Digital Elevation Model (DEM) which is created by ArcGIS, a ...
Yilmaz İcaga, Emin Tas, Murat Kilit
doaj   +1 more source

Flood Modelling Evaluation in a Semiarid Catchment: The Role of a Soil Mineralogical Index From Satellite Imagery

European Journal of Soil Science, Volume 77, Issue 4, July/August 2026.
ABSTRACT The Mediterranean region is characterized by the occasional occurrence of intense rainfall events. Along with lithological, geomorphological, and land use factors, these events influence the hydrosedimentary dynamics of drainage basins, potentially causing torrential floods.
Juan R. Bustos‐Caparros, Montserrat Ferrer‐Julià, Inés Pereira, Juncal A. Cruz, Eduardo García‐Meléndez   +4 more
wiley   +1 more source

Estimating Flood Economic Damages through Integrated Hydro-Meteorological Modeling and Hydraulic Simulation: A Novel Approach for Flood Management and Damage Reduction (Case Study: Poldokhtar Basin) [PDF]

تحقیقات منابع آب ایران
In recent years, the growing frequency of flood events and their associated damages has underscored the critical need to enhance flood risk management strategies, particularly in identifying flood-prone areas and assessing the extent of damage they incur.
Sakineh Koohi, Asghar Azizian, Saeid Najafi   +2 more
doaj   +1 more source

Modelling Nature-Based Solutions in HEC-RAS

Water Resources Management
Abstract Nature-based solutions (NBS) are becoming increasingly popular for mitigating flood risk while providing multiple benefits such as enhanced biodiversity, and improved water quality. Hydraulic modelling is an essential tool for evaluating and optimising the flood risk regulating service of NBS.
Ramtin Sabeti, Thomas Rodding Kjeldsen, Matt Chambers, Hamed Moftakhari, Luis Partida, Ioanna Stamataki, Solomon Simmonds, Rebecca Lee, Barry Hankin, Melissa Hoskings, Katherine Dixon, James Molloy, Muthukumar Narayanaswamy   +12 more
openaire   +1 more source

Flood inundation Mapping using HEC-RAS

Obras y Proyectos, 2006
Flood inundation mapping is an important tool for municipal and urban growth planning, emergency action plans, flood insurance rates and ecological studies. Mapping a floodplain requires a forecasting of the behavior of the stream in question for various recurrence interval storm events and the ability to translate the forecasted results into a plan ...
Goodell C., Warren C.
openaire   +1 more source

Demonstration of an instream flow model to accommodate a threatened tiger beetle in riverine dune habitat

Insect Conservation and Diversity, Volume 19, Issue 4, Page 918-932, July 2026.
Burrows of the threatened Gibson's Big Sand Tiger Beetle in riverine dune habitats are susceptible to flooding through managed flows. HEC‐RAS modelling identified the flow thresholds above which flooding would occur for burrows and affect the beetle larvae. These findings provide instream flow guidelines for conserving this threatened species and guide
Iain D. Phillips, Aaron J. Bell, Faline Drummond   +2 more
wiley   +1 more source