Flood forecast of Chaersen reservoir based on API model and Xincanjiang model
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Abstract:
Chaersen reservoir undertakes the important tasks for the hinggan league area, such as irrigation, flood control and so on, its flood forecasting is significance. Due to the hydrogeological condition and characteristics of rainfall distribution, it is diffi 2 cult to obtain a better simulation by the single model or a set of parameters. This paper used unit Xin canjiang model and API model to forecast Chaersen reservoir flood respectively, and analyzed the applicability of the two models in the region. T he re 2 sults showed that forecast results by the models all met the requirement of the operational, and especially the heavy flood effect is better; If the antecedent soil is moist, both models were applicable, particularly the Xin c anjiang; If the antecedent soil is drought and rainfall intensity was larger, the Xincanjiang model is not applicable, it was supposed to choose the API model to forecast. Therefore, it is necessary for us to choose proper model according to the hydrogeological conditions and the characteris2 tics of rainfall distribution to improve the flood forecast accuracy and to direct reservoir regulation, in order to improve the eco2 nomic effectiveness.
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