This paper established the yield and conflux forecasting scheme of reservoir flood based on analyzing error generation characteristics of Zhanghe reservoir flood.

在分析漳河水库入库洪水误差特点的基础上，建立了入库洪水产汇流预报方案。

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Then BP network is taken to modify the forecast, which leads the flood, forecasting scheme to achieve the third class and can supply references for practical flood forecasting.

利用改进的BP网络修正后，预报方案精度达到丙级标准，可发布参考性预报。

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Then BP network is taken to modify the forecast, which leads the flood, forecasting scheme to achieve the third class and can supply references for practical flood forecasting.

利用改进的BP网络修正后，预报方案精度达到丙级标准，可发布参考性预报。

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