In case a non - navigable stream or man - made waterway becomes navigable after a dam or sluice gate structure is built , the construction unit shall simultaneously build ship passage facilities or reserve sites for such facilities , and the expenses needed thereby incurred shall be borne by the communication departments concerned , unless there are other state - provisions applicable 在不通航的河流或者人工水道上修建閘壩后可以通航的,閘壩建設單位應當同時修建過船設施或者預留過船設施位置,所需費用除國家另有規定外,由交通部門負擔。