River network water replenishing control method and system

The invention provides a river network water supplementing control method and system. A river channel monitoring unit monitors river channel parameters of a water supplementing communication river channel, a water supplementing output river channel and a water supplementing input river channel; the river gate control unit monitors state parameters of an upstream gate and a downstream gate respectively; the intelligent monitoring center stores and processes the river channel parameters and the state parameters; the water supplementing scheduling unit obtains the river channel parameters and the state parameters from the intelligent monitoring center, determines a water supplementing scheduling strategy based on the river channel parameters and the state parameters, and then generates a gate instruction based on the water supplementing scheduling strategy; and the intelligent monitoring center stores and processes the gate instruction and sends the gate instruction to the river gate control unit, so that the ri