The Thames at Walton: Locks, Cuts and Swan Upping

The Thames at Walton has never been a passive backdrop. It has been engineered, managed and ceremonially inspected for well over a century, and three separate strands of that working history, a cut, a lock and an ancient royal ceremony, all pass directly through the town.

The working river

Long before it was a place for towpath walks, the Thames at Walton was a working transport and trade route, and the navigation authorities responsible for it, first the Thames Conservancy and later the Environment Agency, have reshaped this stretch of river more than once to keep it navigable and to manage flooding. The two clearest physical results of that engineering are still visible from the towpath today: Sunbury Lock, just downstream, and the Desborough Cut, immediately upstream.

Sunbury Lock

Sunbury Lock manages the river’s level on the stretch immediately below Walton, part of the standard chain of locks that make the non-tidal Thames navigable for boats over its full length. It is a working, everyday piece of river infrastructure rather than a historic curiosity, still doing exactly the job it has done for generations: letting boats pass safely between different water levels on a river that, left entirely to nature, would not be reliably navigable this far from the sea.

The Desborough Cut

The most significant piece of twentieth-century river engineering near Walton is the Desborough Cut, an artificial channel dug by the Thames Conservancy between 1930 and 1935 to straighten the river’s course between Weybridge and Walton, avoiding a longer, meandering stretch of the river past Shepperton and Lower Halliford. The cut and the island it created, Desborough Island, both take their name from Lord Desborough, President of the Thames Conservancy from 1904 to 1937, under whose leadership the project was carried out. The result halved the distance boats needed to travel on that section of river and helped ease flooding at Shepperton, a genuinely practical piece of engineering that also happened to create one of the best circular walking routes in the area.

Swan Upping

Every July, the Thames between Sunbury and Abingdon becomes the stage for one of England’s oldest surviving ceremonial traditions: Swan Upping, the annual census of the river’s mute swan population, carried out by the King’s Swan Marker and Swan Uppers in traditional rowing skiffs. The five-day journey upstream begins in the Sunbury and Walton stretch of the river, close to the start of its route each year, meaning Walton’s reach of the Thames is among the first sections surveyed as the flotilla makes its way upriver, checking, weighing and ringing cygnets as it goes.

The river in flood

The Thames at Walton floods periodically, as it does along much of its length, and the town’s riverside spaces, including Cowey Sale, are managed with that reality in mind rather than against it. The Desborough Cut itself was partly built to reduce flooding downstream at Shepperton, evidence that Walton’s stretch of river has long been treated as part of a wider system to be managed, rather than a single isolated problem to be solved in one place.

Walking the river

All of this working history sits directly alongside the river’s role as Walton’s best recreational asset. The towpath past Sunbury Lock, the Desborough Island circuit, and the view from Walton Bridge all sit within a short walk of each other, meaning a single afternoon on the Walton riverside can take in a working lock, a piece of 1930s civil engineering, and, with the right timing in July, a genuine centuries-old royal ceremony passing by on the water.