نتایج جستجو برای: flood mitigation dams
تعداد نتایج: 62330 فیلتر نتایج به سال:
Introduction. In 2011, following heavy winter snowfall, two cities bordering two rivers in North Dakota, USA faced major flood threats. Flooding was foreseeable and predictable although the extent of risk was uncertain. One community, Fargo, situated in a shallow river basin, successfully mitigated and prevented flooding. For the other community, Minot, located in a deep river valley, preventio...
By means of a theoretical model, bootstrap resampling and data provided by the International Commission On Large Dams (ICOLD (2003) World register of dams. http://www.icold-cigb.org) we found that global large dams might annually release about 104 ± 7.2 Tg CH4 to the atmosphere through reservoir surfaces, turbines and spillways. Engineering technologies can be implemented to avoid these emissio...
The occurrence trend of floods in recent years shows that the most of Iran regions located in attacks of destructive floods and loss of life and property of flood damages is increasing. Watershed management practices (WMPs) are one of the superior and appropriate solutions for flood hazards mitigation. The impact of WMPs can be investigated using different approaches. In this study, the direct ...
We have developed a framework for flood mitigation risk analysis that applies generally to floods, and have applied it in this study of flood mitigation risk analysis for the Raritan Basin in New Jersey, USA. The framework we have developed involves a conceptual model of the relation among meteorological activity, hydrological models, infrastructure intervention, fine-grained topography, and ec...
Etched into the memory of Asraf Ali, was the day in 1987 when the banks of the mighty river Brahmaputra overflowed and washed away the family home. Only 13 years old at the time, he lost both his parents, and their small piece of land to severe flooding in the municipality of Gaibandha, in Bangladesh. He remained homeless until he moved to the centre of Gaibandha to seek work as a pushcart driv...
Floods continue to inflict the most damage upon human communities among all natural hazards in the United States. Because localized flooding tends to be spatially repetitive over time, local decisionmakers often have an opportunity to learn from previous events and make proactive policy adjustments to reduce the adverse effects of a subsequent storm. Despite the importance of understanding the ...
Flood is a most serious hazard to life and property. Dams, dikes and levees are often designed to a fuzzy quantity (PMF). Probabilistic design is preferable but requires that hydrological data be translated into a local monoscopic flood probability distribution. This process introduces information that goes beyond the facts. The method of relative entropy with quantile constraints minimizes thi...
Past decades damage by floods in Iran and on the other of the world has shown that we have still much work to do to cope with this problem. Hence, the study of these events and development of more effective adaptation and mitigation policies has become a priority, in other parts of the globe. First step in achieving flood risk assessment is data collection. Availability, suitability and quality...
Flooding is one of the most damaging of natural disasters. Structural approaches to flood management consist of reservoirs and dams equipped with floodgates, along with protocols for their operation. However, in spite of the infrastructure being in place, floods can occur because of flaws in the floodgate operation protocols or human error in its implementation. Hybrid automata are a formalism ...
We present a prototype of the flood early warning system (EWS) developed within the UrbanFlood FP7 project. The system monitors sensor networks installed in flood defenses (dikes, dams, embankments, etc.), detects sensor signal abnormalities, calculates dike failure probability, and simulates possible scenarios of dike breaching and flood propagation. All the relevant information and simulation...
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