The Jubilee River was built to reduce the risk of flooding from the River Thames to over 3,000 properties in Maidenhead, Windsor, Eton and Cookham. It will not be fully operational for several weeks from 9 October 2020 while emergency repairs are carried out by the Environment Agency (EA) to Black Potts Weir.
The repairs require a team of divers and a pontoon supporting two cranes. The 'grout mattresses' underwater in the walls of the river need to be repaired and covered in sheet piling. In addition, this needs to be protected with huge boulders called rock armour. It's a big job! Phase 1 was complected in December 2020, and this enabled partial use of the Jubilee River (up to gate movement 2) to divert flood water during the flood alert 24 December 2020 - 4 January 2021. More work is needed in early 2021 to complete the emergency repairs.
If you haven't done so already, it's a good time to signup for early warnings of flooding with the EA Floodline Warnings online or on 0345 988 1188.
EA December 2020 briefing
EA November 2020 briefing