Water depth measuring device for waterway maintenance of water transportation project

The invention relates to the technical field of water transportation engineering, and discloses a water depth measuring device for water transportation engineering channel maintenance, which comprises a connecting platform, the top of the connecting platform is fixedly connected with an outer protective shell, the top of the outer protective shell is provided with an outer protective top cover, and one side of the bottom of the connecting platform is fixedly connected with a waterproof shell. One side of the top of the outer protective shell is fixedly connected with a data transmission assembly, and one side of the data transmission assembly is fixedly connected with a signal antenna; a first driving motor is started to operate, then the first driving motor drives a driving belt to enable turbine blades to rotate, so that an outer protective shell and a floating air cushion can move and float on the water surface, the purpose of reducing the measurement cost is achieved, personnel can remotely control the de