The weir is some distance upstream near the end of Romney Island and runs across the river to Cutlers Ait.

A small 200kW hydroelectric generation station was installed in 2011 to supply electricity to Windsor Castle.

[2][3] The first proposal for a pound lock was in 1774 which was to be further upstream at Firework Ait by Windsor Bridge.

On the Windsor bank the river skirts the town centre and set close to it upstream of Windsor Bridge is an islet, the smallest named on the Thames, Firework Ait and similarly Deadwater Ait.

The main river then has a sharp Z-bend near Windsor Racecourse, then continues past open fields near the village of Eton Wick before it reaches Boveney Lock.