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PROJECTS
Eau Brink Outfall Upgrades
Services
Civil Engineering
Location
Eau Brink Road
Wiggenhall St Germans
Partners
Stantec UK Ltd
Martin Childs Limited
Start & Completion
Completed March 2026
The Eau Brink Tidal Outfall plays a vital role in managing water levels and reducing flood risk within the surrounding low-lying fenland. This wider area is highly influenced by tidal conditions and relies on well-maintained infrastructure to protect communities, farmland and sensitive environmental habitats.
This project formed part of ongoing investment in resilient flood and water management assets across the catchment. It has been made possible through funding from Defra’s IDB Storm Recovery & Asset Improvement Fund.
Overview
In early 2026, works were carried out to upgrade the tidal outfall structure at Eau Brink. The existing tidal sluice doors had reached the end of their serviceable life and were replaced to ensure the continued reliable operation of the outfall.
The structure previously included a water retention penstock. However, this did not provide effective protection to the upstream fen should the tidal (pointing) doors fail or become blocked by debris, which could allow tidal water to enter the catchment. To address this risk and improve overall resilience, the penstock was replaced with a full-height structure capable of retaining the tide if required.
The scheme was designed by Stantec UK Ltd, with construction works delivered by Martin Childs Limited. The WMA Project Delivery team oversaw the works, ensuring the scheme is delivered efficiently and cost-effectively.
Benefits
The upgraded tidal outfall now provides enhanced flood protection for the upstream fen and surrounding area, reducing the risk of tidal flooding during extreme conditions.
The new tidal doors hold back daily high tides while continuing to regulate water levels effectively. They act as gates, allowing water to discharge from the drainage catchment into the River Great Ouse with the tide. This reduces reliance on pumping, lowering operational costs.
Overall, the improvements strengthen flood resilience, support the protection of valuable habitats within the catchment and enhance the long-term performance of the system.
Project Photo Gallery
