 Four of these weirs were replaced in 2009.Three were on the Thames at Mapledurham, Molesey and Radcot, while the fourth was at Blake's Lock, the first lock on the River Kennet, which is managed as part of the Thames.Three more of these weirs, at Rushey, Goring and Streatley, have been Grade II listed since 2009, but the EA is proposing to replace most of Rushey, which would be the only full-width example left.