江河、渠道横断面上的水位与流量之间的对应关系。
分析了传统水位流量关系曲线拟合过程中存在的问题，在此基础上应用免疫进化算法直接拟合水位流量关系曲线。
On the basis of problems existed in fit for relation curve of water level and discharge, the relation curve of water level and discharge is fitted directment by immunization evolving algorithm.
发现实施过渡方案以来，库区累计淤积量与叠加流量加权平均坝前水位的关系，符合以往的关系曲线。
It is found that the relationships between the accumulated volumes of sediment deposition in the reservoir and the average pool levels follow the earlier trend curves very well.
应用推荐