Carry-over storage year-end water storage level determining method

The invention discloses a carry-over storage year-end water storage level determining method. A water storage state of a reservoir can be dispersed according to precision requirements; by adopting the reservoir scheduling rule, the expected annual average generating capacity of the year-end water storage state under the multi-year operation condition of the reservoir can be calculated; by adopting the reservoir water level of the initial stage of the critical time period, the prediction of the reservoir water incoming process of the time period from the critical time period to the year-end, and the respective year-end water storage level as the initial condition and the boundary condition, the optimal generating capacity in the year can be calculated; the generating capacity in the year corresponding to the respective year-end water storage level state and the expected annual average generating capacity can be added together to acquire the total generating capacity corresponding to the respective year-end wat