or tide way
Examples from the Web for tideway
Hushed though the voices were, each word fell distinct on her ear as the boats drew near and passed up the tideway.The Mayor of Troy|Sir Arthur Thomas Quiller-Couch
Then, as the fishermen say, the tideway is ‘all of a paffle.’
This sea breeze blew true and warm all the afternoon, and when it met the ebb the tideway was all sparkling till the evening.
So without climbing out from under the high banks of the creek he splashed out into the tideway, and started back.A Thane of Wessex|Charles W. Whistler
Now the writer was known to be an ally of Kelley (who usually accompanied him when training on the tideway for sculling races).Boating|W. B. Woodgate