Abstract: Based on the flood data of Xin'anjiang river basin, the accuracy and applicability of the empirical unit-line method are evaluated. The result shows that the empirical unit-line method is of good accuracy and applicability in flood calculation for Xin'anjiang river basin, and the relative error is less than 5%. It can be used as a supplementary method for flood forecasting of Xin'anjiang reservoir, as well as a reference for flood forecasting of similar basin in overseas project.

Key words: experience unit hydrograph, dam site flood, Xin'anjiang river basin, applicability

摘要： 基于新安江水库实测洪水资料，评估了经验单位线法在坝址洪水推算的精度和适用性，结果表明，经验单位线法在新安江流域坝址洪水推算中具有较好的精度和适用性，与实测洪水的相对误差在5%以内，可作为新安江水库洪水预报的补充方法，同时可为海外相似流域坝址洪水推算提供参考。

关键词: 经验单位线, 坝址洪水, 新安江流域, 适用性分析