Where is the mouth of the river themes?

Question

Where is the mouth of the river themes?

Answer 1

downriver from London

Answer 2

Southend -on-sea, 15 miles down Tilbury locks

Answer 3

Thames, river in southern England, the most important river in England. It rises in four headstreams—the Isis, the Churn, the Colne, and the Leach—on the southeastern slope of the Cotswold Hills, in Gloucestershire, near Cheltenham. The streams converge on Oxford and flow generally southeast to Reading, through a gap in the Chiltern escarpment. The Thames thereafter follows a generally eastern course through London, and a few kilometers below Gravesend it expands into a wide estuary and enters into the North Sea. It is 338 km (210 mi) long. At London Bridge the width of the river is about 265 m (about 870 ft); at Woolwich, 448 m (1470 ft); at Gravesend pier 732 m (2400 ft); 5 km (3 mi) below Gravesend, 1180 m (3870 ft); at Nore Light 10 km (6 mi); and at its mouth, between Whitstable and Foulness Point, the estuary is 29 km (18 mi) across.

The London docks cover more than 56 km (35 mi) of the river from the Tower Bridge to Tilbury Dock, and oceangoing vessels are moored here. Although the upriver docks are tidal, the lower admit any vessel at any stage of the tide.

The Thames is the main source of the water supply of London. The part of the river immediately below London Bridge is called the Pool, and the part between the bridge and Blackwall is called the Port. Two embankments have been formed, one on the northern shore from Blackfriars Bridge to Westminster and one on the southern shore from Westminster Bridge to Vauxhall. In the Middle Ages the valley was prosperous, with many famous religious houses and several large towns, including Oxford, Reading, and Windsor. Interesting archaeological discoveries were made in the valley, including fossils of seashells and a human skull of the Paleolithic period. Severely polluted in the 19th century, the river was made cleaner beginning in 1963. In 1982 downstream barriers, designed to protect London from floods caused by extreme high tides, were completed. this answer is in res ponse to two questions.