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Showing 1 to 11 of 11 for “"Flood Frequency Analysis"”.
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Improving flood frequency analysis by integration of empirical and probabilistic regional envelope curves
Flood design necessitates discharge estimates for large recurrence intervals. However, in a flood frequency analysis, the uncertainty of discharge estimates increases with higher recurrence intervals, particularly due to the small number of available flood data. Furthermore, traditional …
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Previsão de cheias com extensão de registros através de modelos determinísticos
… are strongly influenced by the selected "design flood" value. Thus, a reliable determination of the flood frequency at the project site is one of the most important requirements in its development. The well-known methodology called flood frequency analysis has the inconvenient of limiting the …
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Cheias: análise de frequências e regionalização de quantis
… to selecting a mehod that best estimate future flood flow frequencies. By the way, many probability distributions, usually applied in flood frequency analysis, combined with differents parameters estimation methods have been considered. ln order to evaluate the goodness of fit of the functions …
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Hydrologic Modeling of a Probable Maximum Precipitation Event Using HEC-HMS and GIS Models - A Case Study of Two Watersheds in Southern Virginia-
… hydrographs associated with the Probable Maximum Flood (PMF) at key locations in each of the watersheds. These hydrographs were subsequently used to develop flood inundation maps of the study areas and to characterize sediment transport phenomena in the study reaches under severe flooding …
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Comparison of Two Potential Streamgage Locations on Scott Creek at Swanton Pacific Ranch, California
… discharge measurement capabilities. A detailed flood frequency analysis was completed using a direct watershed comparison, direct equations developed by Waananen and Crippen, a Log Pearson Type III Frequency Distribution, a regional analysis, and two-station comparisons. Final results indicate a …
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Disturbance and temporal variability in invertebrate assemblages in two South African rivers
… an examination of the relationship between floods as disturbances, the disturbance regime and the temporal dynamics of invertebrate assemblages, over the short term and at intra- and inter-annual time scales in the Molenaars and Berg Rivers in the Western Cape of South Africa. Invertebrate …
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Assessment of the influence of Nonstationary Climate on Extreme Hydrology of Southwestern Canada
… to the impacts of hydrological extremes, floods and droughts is challenged by the increasing frequency of these extreme events. In addition, increased winter temperatures over the past century have led to declines in winter snowpack and caused earlier snowmelt, leading in some years to a …
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Floods in Germany : analyses of trends, seasonality and circulation patterns
Flood hazard estimations are conducted with a variety of methods. These include flood frequency analysis (FFA), hydrologic and hydraulic modelling, probable maximum discharges as well as climate scenarios. However, most of these methods assume stationarity of the used time series, i.e., the series …
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Application of open-access and 3rd party geospatial technology for integrated flood risk management in data sparse regions of developing countries
Floods are one of the most devastating disasters known to man, caused by both natural and anthropogenic factors. The trend of flood events is continuously rising, increasing the exposure of the vulnerable populace in both developed and especially developing regions. Floods occur unexpectedly in …