river flooding Articles
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River Flood Defences - Strategies for River Flooding
Flooding from main rivers is caused by heavy rainfall upstream, and can also be caused by flood surges up rivers from the sea – caused by high tides, low pressure and strong winds. River flooding is often able to be identified well in advance, and Flood Alerts are able to be used to warn those living in flood risk areas in addition to any press reporting, and river flood defences can ...
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Comparison between capabilities of HEC–RAS and MIKE11 hydraulic models in river flood risk modelling (a case study of Sungai Kayu Ara River basin, Malaysia)
River flood risk map prediction is a combination of hydrological modelling, hydraulic modelling, river flood visualisation and river flood risk mapping. Two hydraulic models were applied in this research regarding their capabilities in river flood risk studies. These are MIKE11 developed by Danish Hydraulic Institute (DHI) and HEC–RAS4.0 by US Army Corps of Engineers. These two hydraulic models ...
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Climate change and river flooding in Europe
Untitled Document Extreme floods are the most common type of natural disaster in Europe. Climate change, including the increasing intensity of heavy rainfall, is projected to make extreme river floods even more frequent in some areas, especially in central, northern and northeastern Europe. In particular, the number of sudden, localised but severe floods - flash floods ...
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London flood risk
A Greater London Assembly report in 2011 stated that there was a 'serious risk' of flooding if London faces severe rainfall. Regardless of the Thames Barrier – which is there to protect against flooding from the sea, the London Assembly’s Environment Committee claim that some streets could flood from rain within minutes. Rainfall equal to what other parts of the country experienced in ...
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Are embankments a good flood control strategy? A case study on the Kosi river
Whether embankments should be used to control floods is a question of great importance in the eastern Gangetic plain, where embankment breaches cause severe flood damage every year and huge damage due to major breaches every few years. Critics of the embankment policy have called for a strategy of living with floods by building dispersed infrastructure to cope with floods. However, no ...
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GAO Report on Missouri River Flood and Drought
Introduction The Missouri River stretches from western Montana to St. Louis, Missouri. The Corps manages six dams and reservoirs on the river to provide flood control and for other purposes, such as recreation and navigation. The Corps bases reservoir release decisions on the guidance in the Master Manual. In the 2011 flood, the Corps managed the highest runoff volume since 1898, resulting in ...
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Automatic control of pollutant on a shallow river using surface water systems: application to the Ebro River
In this paper, the problem of automatic control of pollutant on a shallow river using surface water systems is addressed using a benchmark test case based in the Ebro River. The Ebro River presents flooding episodes in the city of Zaragoza in Spring when snow melts in the Pyrenees. To avoid flooding and high pollutant levels in living areas, some lands outside the city are prepared to be ...
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A cellular automata model incorporating land tax for predicting urban growth
This study looks at the possibility of developing a cellular automata model incorporating tax and geographic conditions for simulating urban growth process with a view of using it in the future as a tool for directing growth in the city of Makassar, Indonesia. The developed model uses land tax values in addition to geographic condition constraints such as rivers, flood prone and nature ...
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Green–blue water in the city: quantification of impact of source control versus end-of-pipe solutions on sewer and river floods
Urbanization and climate change trends put strong pressures on urban water systems. Temporal variations in rainfall, runoff and water availability increase, and need to be compensated for by innovative adaptation strategies. One of these is stormwater retention and infiltration in open and/or green spaces in the city (blue–green water integration). This study evaluated the efficiency of ...
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A new modified nonlinear Muskingum model and its parameter estimation using the adaptive genetic algorithm
First, a novel nonlinear Muskingum flood routing model with a variable exponent parameter and simultaneously considering the lateral flow along the river reach (named VEP-NLMM-L) was developed in this research. Then, an improved real-coded adaptive genetic algorithm (RAGA) with elite strategy was applied for precise parameter estimation of the proposed model. The problem was formulated as a ...
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Erosive coping after the 2011 floods in Kenya
Periodic river floods have devastating social and economic impacts on poor households in the low-lying coastal and western regions of Kenya. This paper focuses on how households in Bunyala District coped with the impacts of flooding, and particularly the December 2011 River Nzoia flood. The data for the study was collected through a survey of 400 households, three focus group discussions, four ...
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Flood characterisation of the Haor region of Bangladesh using flood index
The paper presents the flood characterisation of the Haor region in the north-east of Bangladesh. The region consists of a system of Haors, each of which is a saucer-shaped depression and interconnected by a river system. A portion of the Haor area, known as the deeply flooded area, consisting of about 15 Haors, was chosen as the study area. A 1D2D model, with one-dimensional model for the ...
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Flood hazards in the headwaters area: lessons learned from a survey of households in the upper Myjava basin, Slovakia
The aims of this paper are to present knowledge about the threat of flooding in the upper basins of the Myjava River, obtained using a questionnaire, and to identify the potential lessons for flood risk management. The questionnaire was designed to obtain information about households' experience with flooding, including the type of floods experienced, the locations of flooding, the ...
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Optimization–simulation for short-term reservoir operation under flooding conditions
The problem of optimal operation of river–reservoir systems under flooding conditions is formulated in this study as a combination of particle swarm optimization (PSO) algorithm and a simulation model of river flood routing. Both hydrologic (Muskingum and Muskingum-Cunge) and hydraulic (solving Saint-Venant equations) flow routing methods are linked to the PSO algorithm with the objective ...
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Flood disasters – a global perspective
Various disasters in recent decades have confirmed that the risk from water-related events has been increasing significantly worldwide. Among those events are tsunamis, storm surges, river floods, flash floods, mass movements and droughts. The driving factors of this risk are the unabated increase in global population, the concentration of people in high-risk areas such as coasts, flood plains ...
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Freshwater ecosystems
Freshwater ecosystems in Europe are rich in biodiversity and provide essential ecosystem services to humans Europe's freshwater ecosystems range from rivers, flood plains, lakes and ponds, marshes and peatlands, to man-made water bodies such as canals and reservoirs (EC, 2007a; EC, 2007b). They encompass a broad variety of wetlands. These different systems also interact with groundwater. Around ...
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Assessment of the feasibility of floodwater utilization in North-East China
In order to alleviate the water supply–demand problem, a flood resource utilization strategy is proposed, called ‘Flood Utilization’. The strategy focuses on building large-scale water conservancy facilities and improving management measures. This paper presents the probability analysis of floodwater utilization in a confluence area, where a tributary joins a main river. Baicheng is used as ...
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Flooding management using hybrid model predictive control: application to the Spanish Ebro River
In this paper, the problem of flooding management using hybrid model predictive control is presented and applied to the Ebro River in Spain. The Ebro River presents flooding episodes in the city of Zaragoza during spring when snow melts in the Pyrenees. To avoid flooding in populated areas, some land outside the city is prepared for flooding. This paper presents a control approach to determine ...
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Flood maps and plans
Flood means the temporary covering by water of land not normally convered by water ( 2007/60 EC). There are various flood types, which differs regarding to the water source (e.g. rainwater, groundwater, stream water) their duration (short (minutes to hours) or long (weeks to months)) or to their location (e.g. coastal floods). One possible classification of flood types is listed below: Flash ...
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River Embankment, Goole - Case Study
CLIENT: Environment Agency RECLAMATION STRATEGY: Low permeability barrier CONTAMINATION: Flood defence END USE: Flood defence Project Overview There are around 7,500 km of coastal and river flood embankments in England and Wales. Effective performance of these embankments during extreme flood events is critical for the provision of sustainable flood risk management. Embankments can ...
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