The Rythe is a river or stream in north Surrey, England which is generally open and which is a natural woodland feature for approximately half of its course before being variously culverted and a suburban garden feature, passing between Thames Ditton and Long Ditton, then discharging into the Thames, its longest branch is the Arbrook which drains Arbrook Common, a woodland of the mainly wooded Esher Commons. More information on the Wikipedia page [1]