University of Twente Student Theses


Predicting discharge at ungauged catchments : parameter estimation through the method of regionalisation

Deckers, D.L.E.H. (2006) Predicting discharge at ungauged catchments : parameter estimation through the method of regionalisation.

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Abstract:The ability to predict flows at gauged and ungauged catchments is an important goal in hydrology. The reason why prediction is of importance is for instance the ability to estimate impacts of climate or land use change on the discharge regime. For such purposes hydrological models are generally used all over the world. However, in order to be able to predict discharge values for concerning model parameters have to be determined. In general, this is done by calibrating the model against observed discharge using efficiency criteria which evaluate model performance. Yet, with respect to the ungauged catchment topographic and climatic properties are available, but no observed discharge data. Hence, the ungauged catchment can not be calibrated and model parameter values have to be determined using other sources of information. The objective of this study contributing to this issue is as follows: Contribute to reducing uncertainty in the prediction of discharge regime at the ungauged catchments through application of the method of regionalisation based on establishing relationships between model parameters of the hydrological model HBV and climatic and physiographic data using 61 well gauged catchments in the United Kingdom.
Item Type:Essay (Master)
International Institute for Geo-Information Science and Earth Observation
Faculty:ET: Engineering Technology
Subject:56 civil engineering
Programme:Civil Engineering and Management MSc (60026)
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