Its source is at Pink Green near Wood End; it then flows close to Tanworth-in-Arden and on to Henley-in-Arden, where several changes to the original course of the river have been made in the past to prevent flooding. To the south near Wootton Wawen it is the main feeder for Wootton Pool. The river continues to flow generally southwards before joining with the River Arrow at Alcester, which itself joins the River Avon near Salford Priors.
The first flour mill on the banks of the river is half a mile south of Henley In Arden at Blackford Mill. The river becomes large enough when it reaches Wootton Wawen to have provided the source of power for a large 19th-century multi-storey mill near the village of Great Alne. The water wheel was replaced by a turbine prior to the First World War. At one time the mill, which was operated by the Spencer family, had 15 employees and supplied flour to a wide range of bakers including Weston-super-Mare. Although the mill closed in the 1960s, the current owner may begin milling again using millstones.
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