Works also include two new footbridges, a flood warning gauging station, and an innovative ultrasonic structure that allows fish and mammals to move freely.
The River Gade has returned to its natural course in Gadebridge Park, following an ambitious river restoration project delivered by the Environment Agency, in collaboration with Affinity Water, Dacorum Borough Council and contractors BAM Nuttall.
The project has reconnected the chalk stream to its natural floodplain, improving wildlife habitats, reducing the risk of localised flooding downstream of the white bridge in Gadebridge Park.
Historically, the River Gade was diverted from its natural course to supply water to the former Bury Mill. This artificial channel, perched on the edge of the park, caused the river to become disconnected from the surrounding landscape, leading to reduced flow, water quality issues, and limited biodiversity.
The restoration involved creating a new river channel through the centre of the park, bringing the Gade back to its natural position in the valley bottom. The works included the installation of two new footbridges, a gauging station to support the flood warning system, and an innovative ultrasonic structure that allows fish and mammals to move freely while also redirecting spring flows vital for chalk stream ecology.
As a rare chalk stream, of which 85% globally are found in England, the River Gade is a valuable habitat. Chalk streams are known for their clear, mineral-rich water and stable temperatures, providing an ideal habitat for species such as water voles and brown trout.n Gadebridge Park is one of Hemel Hempstead's largest and most popular green spaces, offering something for everyone. Alongside the newly restored river, the park features expansive open grass areas, a skate park, a play area and splash park for children and a walled garden with a rich history and impressive formal planting displays.
Chris Wilson, area director at the Environment Agency, said:
Getting to this stage marks the huge collective effort of a large number of people, not just at the Environment Agency, but from our partners, Dacorum Borough Council and Affinity Water, our contractors, JBA, BAM Nuttall and Arcadis and many, many others besides.
I'd like to thank everyone involved for their perseverance and commitment to bringing such a complex and ambitious project to completion.
Councillor Robin Bromham, portfolio holder for neighbourhood operations at Dacorum Borough Council, added:
This is a landmark moment for Gadebridge Park and for our local environment. The return of the River Gade to its natural course not only restores an important ecosystem but also enhances the park experience for our residents and visitors. We're proud to have worked with our partners to deliver this project that benefits both people and nature.
