Application and comparison of hydrological models in small watersheds of humid regions
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Abstract:
Xin’anjiang model, Sacramento model and TOPMODEL were applied in three small watersheds of humid areas of China. The relative error of flood peaks and error of the time of flood peaks were taken as the evaluation indexes for assessing the forecasting accuracy , and applicability of different hydrological models indifferent basins. The results showed that: In Nanyanghe watershed. the Xin’anjiang Model had the better Prediction accuracy than the other two Models, and none of these three modals had high accuracy ; In Wuduhe w atershed, the Xin’anjiang model had the highest prediction accuracy , which meet the prediction accuracy requirements, and the Sacr amento model had moderate, while the TOPMODEL model had the worst accuracy ; In Mao ping he watershed, Xin’anjiang model had the hig hest prediction accuracy, while the Sacramento model and TOPMODEL model had slightly lower prediction accuracy than Xin’anjiang model, but these three models meet the prediction accuracy requirement. After a comprehensive comparison, it was found that Xin’anjiang mo del had the highest prediction accuracy in the three selected watersheds.
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