Journal
HYDROLOGY AND EARTH SYSTEM SCIENCES
Volume 4, Issue 1, Pages 23-34Publisher
EUROPEAN GEOPHYSICAL SOCIETY
DOI: 10.5194/hess-4-23-2000
Keywords
floods; frequency; TOPMODEL; rainfall-runoff modelling
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A continuous simulation methodology, which incorporates the quantification of modelling uncertainties, is used for flood frequency estimation. The methodology utilises the rainfall-runoff model TOPMODEL within the uncertainty framework of GLUE. Long return period estimates are obtained through the coupling of a stochastic rainfall generator with TOPMODEL. Examples of applications to four gauged UK catchments are provided. A comparison with a traditional statistical approach indicates the suitability of the methodology as an alternative technique for flood frequency estimation. It is suggested that, given an appropriate choice of rainfall-runoff model and stochastic rainstorm generator, the basic methodology can be adapted for use in many other regions of the world.
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