 These both feed water into Barden Beck, which flows into the River Wharfe.The Upper reservoir also is connected to the Nidd Aqueduct, which sends water from Nidderdale and Wharfedale to the Chellow Heights treatment plant in Bradford.Barden Moor itself covers an area of and stretches from Embsay in the west and Bolton Abbey in the south, to Burnsall in the north and the River Wharfe in the east.