River Thames | History, Map, & Facts | Britannica
https://www.britannica.com/place/River-Thames
WEBApr 7, 2024 · River Thames, chief river of southern England. Rising in the Cotswold Hills , its basin covers an area of approximately 5,500 square miles (14,250 square km). The traditional source at Thames Head, which is dry for much of the year, is marked by a stone in a field 356 feet (108.5 metres) above sea level and 3 miles (5 km) southwest of the town ...
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