Its source is near the town of Lechlade in Gloucestershire and it flows into the North Sea near Southend, a total of 215 miles.
As you do not qualify your question the 5 longest are - 1 River Severn 220 miles long 2 River Thames 215 3 River Trent 185 4 River Great Ouse 143 5 River Wye 135
There is virtually no commercial traffic on the River Thames now because modern ships are too big to get up the river. Most of its present day use is for leisure purposes like tourist boats, rowing, fishing and private cruisers. Therefore the number of people using it varies according to the time of year.
The possessive form of the singular noun river is river's.example: The river's current is too strong for swimming.
It is 212 miles long, flows through Oxford, Windsor and London and discharges into the North Sea. It also has a flood barrier to protect London from an exceptionally high tide. The original London Docks were on the river Thames but modern ships are now too big to get upriver to London.
The river Thames flows through the capital and is very important. The River Severn is the longest. There are others that have ports etc that have been very important in the past and songs have been written about them such as the River Mersey in Liverpool. Chester which was occupied by the Romans and had a fort there, is on the River Dee. The Roman fort of Ribchester is on the River Ribble. There is also the Avon, Stour, Tyne, Tees, Trent, Ouse, the Humber, the Wyre (Fleetwood) and the Lune (Lancaster). There are others too.
they can use it as a source of fish. It is used for pleasure and for transport. In central London, it is used for passenger ferries and for transporting heavy freight. The west of the Thames, from Teddington down is mostly used by pleasure craft.
I am afraid I do not know but I don't think it is polluted any more. I do know actually. It's polluted because of all the factories putting their chemicals and horrible stuff into the river and the ferries which sail across cause pollution too
River Severn River Thames River Trent River Great Ouse River Wye River Tay River Spey River Clyde River Tweed River Avon
No as rivers usually run in-land where there is no wind and too much current. Also they are genraly too shallow
1.6 million gallons per second
Not any more because modern ships are too big to get upriver to the old London Docks.
There could be many factors that make any river dangerous:1. Dangerous creatures like alligators or carnivorous fish2. People can drown in the river if it is deep enough and wide3. The river can be too cold4. There can be river currents or rapids5. You can get dangled in water plants or sick from algae