River water level monitoring and early warning device

The utility model provides a river water level monitoring and early warning device, which relates to the technical field of water level monitoring and comprises a supporting mechanism, a monitoring mechanism is fixedly mounted at the top of the supporting mechanism and comprises a scale plate, and a floating barrel is movably sleeved on the outer surface wall of the scale plate. According to the utility model, under the action of the monitoring mechanism, firstly, when river water rises, the floating barrel moves upwards on the outer surface wall of the scale plate along with the river water, and when the firing pin is in contact with the sensing device, the sensing device transmits a signal to the wireless transmission module through an electric wire and then transmits the signal to the signal receiving chamber through the wireless transmission module; meanwhile, the sensing device can transmit a signal to the controller, then the controller controls the broadcasting device, the broadcasting device works and