Real-time flood forecasting and flood simulation method and system

The invention relates to the technical field of flood forecasting informatization, in particular to a real-time flood forecasting and flood simulation method and system. Receiving water and rain condition data and rainfall forecast data, wherein the rainfall forecast data comprises rainfall forecast data and hydrometric station information; according to the water and rain condition data and the rainfall forecast data, station forecast and interval inflow forecast are generated, and the station forecast comprises a reservoir station forecast result; generating a reservoir dispatching rule according to a reservoir site forecasting result of the site forecasting; calculating through reservoir flood regulation calculation according to a reservoir regulation rule, and constructing flood routing data; and performing analysis according to the built flood routing data and the interval inflow forecast, constructing a hydrological and hydrodynamic coupling flood model, and performing model calculation to generate flood