The Churn, the Windrush, the Cherwell and the Mole are all tributaries of which major river?
River Thames the head water level in the reach above Teddington and can occasionally reverse the river flow for a short time. In these circumstances, tidal effects can be observed upstream to the next lock beside Molesey weir, which is visible from the towpath and bridge beside Hampton Court Palace. Before Teddington Lock was built in 1810–12, the river was tidal at peak spring tides as far as Staines upon Thames. In descending order, non-related tributaries of the non-tidal Thames, with river status, are the Churn, Leach, Cole, Ray, Coln, Windrush, Evenlode, Cherwell, Ock, Thame, Pang, Kennet, Loddon, Colne, Wey and Mole.
River Cherwell the watermeadows but there are ruins of a manor house too. Beyond here, the river reaches Thrupp where the Oxford Canal finally leaves the Cherwell valley. There was a Romano-British settlement not far from the River Cherwell near Kidlington and a substantial Romano-British villa across the river at Islip. To the east of Islip is a wide plain called Otmoor drained by the River Ray and its small tributaries. The Ray, the Cherwell's largest tributary, flows into the Cherwell at a weir in Islip, known as The Stank. The River Cherwell reaches the northern outskirts of Oxford and runs south