
Kilnwood Vale, West Sussex, UK, required the realignment of Bewbush Brook with surface water attenuation ponds. The former landfill channel required erosion control, stable embankments using site-won materials, low permeability and two road embankments, making geosynthetics essential.

Kilnwood Vale, a large residential development in West Sussex, UK, required the realignment of Bewbush Brook to integrate it with surface water attenuation ponds. The existing steep-sided channel had been originally reconfigured in the 1970s and 80s as part of landfill operations, necessitating a new, permanent realignment. The project-specified erosion control at bends, stable embankments using site-won materials, and low hydraulic permeability to manage fluctuating water levels. Additionally, two earthwork embankments were needed for road crossings over the brook. Given the steep slopes and material reuse requirements, a geosynthetic solution was essential.

Consulting engineers Campbell Reith collaborated with Naue to develop a reinforced earthwork solution using three key geosynthetic products:
The project prioritized solutions maximizing material reuse and minimizing resource consumption:
By integrating Naue’s geosynthetics, the Bewbush Brook realignment successfully combined engineering performance with ecological enhancement, providing a resilient riparian corridor for Kilnwood Vale. Socially, it strengthens community well-being, while financially, the use of site-won materials and efficient engineering solutions lowers costs and ensures long-term infrastructure durability.
Secugrid® enabled steep, reinforced embankments using site-won soil, reducing the need for imported fill.
Secumat® stabilised the watercourse bends and supported vegetation growth without additional hard-engineering measures.
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