Is the expansion and relocation of the reservoir a normal water level?

The expansion and relocation of reservoirs are usually carried out at normal water level. Normal water level refers to the highest water level reached by the reservoir before the flood season under normal operating conditions in order to achieve the purpose of promoting benefits and eliminating pesticides. When making a reservoir operation plan, we should consider the requirements of promoting reservoir development and the storage capacity curve to determine the normal storage level of the reservoir.