In response to the situation where the construction period of the Longxikou navigation power junction project is located in the river section where navigation cannot be interrupted,and there are many ships coming and going,and the navigation environment of the temporary waterway is complex,an intelligent waterway system during the construction period has been designed and developed.The system is based on electronic waterway maps and realizes real-time monitoring of waterway water level,flow rate,and depth,remote control and telemetry of navigation aids,dynamic management of ships,and provides sharing and service interfaces.The implementation of this system has realized non-contact and unmanned real-time measurement of river surface velocity field,as well as dynamic management of navigation aids and ships,improved management efficiency and ensured the navigation safety of the construction section of the Longxikou junction project.