an estuary
An estuary.
in lakes and river
An "ebb tide" flows up river, the "flow tide" flows towards the sea.
that part of the mouth or lower course of a river in which the river's current meets the sea's tide.
The strength (flow) of the current at the River Amazon mouth, depends on the amount of rainfall in its upper reaches, and whether the tide is ebbing or flooding. Even such a mighty river as the Amazon, can be pushed back and held up by the power of a flood tide.
the ebb tide
The mouth of a river where it meets the sea, with a mixing of fresh and salt tidal water
the ebb tide
a Delta is a 'wetland' form that is created in the mouth of a river and is formed by sediments carried down by the river and deposited in its mouth. Over millions of years this can form a large flat area, or a tidal mouth, which is covered by the tidal flow of the sea
the ebb tide
the Nile river
From the mouth of the Thames at the North Sea to Teddington Lock in West London.