It varies wildly. The Thames began its life in the Jurassic Period — between and million years ago. Plenty of birds live in the habitats surrounding the river, including the cormorant and herring gull. There are also plenty of swans, including rare black swans. Many of the fish that live in the river are at threat thanks to the pollution leaching into the Thames, though this has lessened in recent years.
Check These Out…. Love This? Save and Share! Contents Page. Follow me on Twitter mbarrow. I teach computers at The Granville School and St. John's Primary School in Sevenoaks Kent. Interesting facts about the River Thames Length km miles Source is about a mile north of the village of Kemble, near Cirencester. The area of floodplain is km 2. There are in all 47 locks, The Thames has been frozen over at various times, the earliest recorded occasion being AD We have approached Teddington Lock on the high tide whilst transiting from Limehouse and have seen the bottom and the top gates open together.
This happens on occasions when the tide is above the height of the weir and the lock keepers allow boats to travel through the lock without stopping. At London Bridge, where the tides are measured, the depth of the Thames at low water is about 20 metres at its deepest. At high water you can add 5 to 7 metres to that depth. At the opposite end of the scale, upriver at Kew, we have seen boats negotiate a course with great difficulty, as the depth there is closer to 1 metre. Kailani heading for Tower Bridge.
Kew Railway bridge at low tide.
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