Because the channel bed was adjusted by scouring and silting in long-term, the required period to reach basically equilibrium was predicted based on the typical and assemble hydrographic data in long series after the building of Lijia flume dam.

• 应用李家峡建坝后典型水文年长系列的组合资料，预报了河床经长期冲淤调整后达到基本平衡需要的时间。