Baiyun Hydropower Station is located in Chengbu County, Hunan Province, which is 5km from the county town. By combining the analysis of monitoring data of leakage amount of above-mentioned dam and the numerical calculation results, it is concluded that, there are serious leakage at the lower face of left bank and near the toe board, which results in the potential safety hazard of major seepage flow. In accordance with "Guidelines on Dam Safety Evaluation", the seepage property of Baiyun hydropower dam is rated as Grade "C".
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