The estuary between Shoeburyness and Sheerness is 8 Km wide. The estuary between Whitstable and Foulness is 29 Km
thames
Today due to damming projects primarily by Israel the Jordan rarely exceeds 100ft in width, and 10ft in depth.
The widest point of the tennessee river is near the tributary of the ohio river, reaching 1 1/2 miles wide at its widest point.
The merced river gets up to 50 ft wide at its widest point.
The Seine River, which flows through Paris, has an average width of about 24 to 30 meters (79 to 98 feet) in the city, while the Thames River in London averages around 250 meters (820 feet) at its widest point. Therefore, the Thames is significantly wider than the Seine. Additionally, the Thames has a more extensive river system, which contributes to its greater overall width.
It gets wider all the way to the sea, like most rivers.
The river mersey is 1.2km
300m
26km at chelyabinks
The River Thames flows into an estuary near Southend in Essex. It is actually between the Counties of Essex and Kent where it meets the North Sea.
8,979
the mouth