Journal
HYDROLOGICAL PROCESSES
Volume 23, Issue 25, Pages 3583-3597Publisher
WILEY
DOI: 10.1002/hyp.7461
Keywords
streamflow; discrete wavelet transform; linear regression; neural networks; modelling
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The accuracy of the wavelet regression (WR) model in monthly streamflow forecasting is investigated in the Study. The WR model is improved combining the two methods-the discrete wavelet transform (DWT) model and the linear regression (LR) model-for 1-month-ahead streamflow forecasting. In the first part of the study, the results of the WR model are compared with those of the single LR model. Monthly flow data from two stations, Gerdelli Station on Canakdere River and Isakoy Station on Goksudere River, in Eastern Black Sea region of Turkey are used in the study. The comparison results reveal that the WR model Could increase the forecast accuracy of the LR model. In the second part of the study, the accuracy of the WR model is compared with those of the artificial neural networks (ANN) and auto-regressive (AR) models. On the basis of the results, the WR is found to be better than the ANN and AR models in monthly streamflow forecasting. Copyright (C) 2009 John Wiley & Sons, Ltd.
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