become navigable meaning in English

扣儿开了

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闸坝后可以通航的，闸坝建设单位应当同时修建过船设施或者预留过船设施位置，所需费用除国家另有规定外，由交通部门负担。