Regression models for within-year capacity adjustment in reservoir planning
- 1 August 2003
- journal article
- Published by Taylor & Francis in Hydrological Sciences Journal
- Vol. 48 (4) , 539-552
- https://doi.org/10.1623/hysj.48.4.539.51409
Abstract
Streamflow data from 12 international rivers were used to develop predictive relationships for total (i.e. within-year plus over-year) reservoir capacity as well as the within-year capacity adjustment for use during reservoir planning. The models were then validated using data from three other international rivers. In general, it was found that the performance, during both calibration and validation, of the combined capacity model was better than that of the within-year capacity adjustment model. The two models are applicable only if an estimate of the over-year capacity is available. Methods of independently estimating the over-year capacity, as well as the other derived factors used as independent variables in the regression models, are described for gauged and ungauged sites. Des données de débit de 12 rivières internationales ont été utilisées pour estimer des capacités totales de réservoir (c'est-à-dire intra et inter-annuelles) ainsi que des capacités intra-annuelles d'ajustement, pour aider à la planification de réservoir. Les modèles d'estimation ont ensuite été validés à partir de données de trois autres rivières internationales. En général, il a été mis en évidence que la performance, en phases de calage et de validation, du modèle combiné de capacité est meilleure que celle du modèle d'ajustement intra-annuel. Les deux modèles sont applicables seulement si une estimation de la capacité inter-annuelle est disponible. Les méthodes d'estimation indépendante de la capacité inter-annuelle, ainsi que les autres facteurs dérivés, utilisés comme variables indépendantes dans les modèles de régression, sont décrites pour des sites jaugés et non-jaugés.Keywords
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