Beam Auto Sluice 55BE0102/C501
Introduction
The photograph on this page of Beam Auto Sluice 55BE0102/C501 by Robin Webster as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Robin Webster Taken: 2 Apr 2011
So says the Environment Agency sign on the fence. Combined with an earth wall across the rest of the valley, it appears to be a recent measure to prevent extreme high tides in the Thames progressing up the Beam valley.