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Influence of rainfall data on the uncertainty of flood simulation

A. Walega, L. Ksiazek
2016 Soil and Water Research  
Walega A., Ksiazek L. (2016): Influence of rainfall data on the uncertainty of flood simulation. Soil & Water Res., 11: 277−284. The aim of this paper was to determine the influence of factors related to rainfall data on the uncertainty flood simulation. The calculations were based on a synthetic unit hydrograph NRCS-UH. Simulation uncertainty was determined by means of GLUE method. The calculations showed that in the case of a catchment with limited meteorological data, it is better to use
more » ... s better to use rainfall data from a single station located within the catchment, than to take into account the data from higher number of stations, but located outside the catchment area. The parameters of the NRCS-UH model (curve number and initial abstraction) were found to be less variable when the input contained rainfall data from a single rainfall station. It was also manifested by a lower uncertainty of the simulation results for the variant with one rainfall station, as compared to the variant based on the use of averaged rainfall in the catchment.
doi:10.17221/156/2015-swr fatcat:7eg4ehzlbff37e3r4onxpx5ohe