River Aire east of Castleford; Ferrybridge C, Eggborough and Drax. Drax takes its cooling water from the Ouse, but both Ferrybridge and Eggborough draw their water from the Aire. Both of these plants stopped generating in 2016, with Eggborough being a stand-by for capacity problems until March 2017. A hydroelectric power station was installed on the Brotherton Weir at Knottingley in November 2017. The £7.5 million project is expected to deliver 500 kilowatts per year and be operational for 100 years. Due to the Aire flowing through the former industrial landscape of West Yorkshire, it had a reputation as being heavily polluted.
Drax, North Yorkshire no value, as it had been flooded by the Ouse, and the borough was not even mentioned, leading George Sheeran to claim that flooding may have led to the abandonment of the town, or at least the end of its borough status. However, the inquisition post mortem for Richard Lely of Drax, held in 1422, indicates that his part of the land was not completely worthless, although the mill was ruined. His son John inherited and the property then passed to John's daughter Joan, who had been born and baptised at Drax in 1424. She was married to John Babthorpe