The River Thames in London is a tidal river, it’s not the only one in the world, but it’s the only one I know of. How does a river which surely has a constant supply of water flowing into it have a tide?
In: Earth Science
London is only ~30′ above sea level and the tides can vary about 25′.
You have the force of the outflow of the river (or outgoing tide) vs the inflow of the water coming in from the tide. In some places (Turnagain arm in Alaska) this will actually cause a wave where the two meet, called a tidal bore.
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