According to the twelfth-century chronicler William of Malmesbury, the abbey was built on a gravel spur "between the rivers Kennet and Thames, on a spot calculated for the reception of almost all who might have occasion to travel to the more populous cities of England". The adjacent rivers provided convenient transport, and the abbey established wharves on the River Kennet. The Kennet also provided power for the abbey water mills, most of which were established on the Holy Brook, a channel of the Kennet of uncertain origin.