Great Cheverell Stream- Erosion control

The failed structure was removed by Cain Bio-Engineering and replaced by a stronger, rock roll based design.


Project Brief

Great Cheverell is a village located on the edge of the northern greensand escarpment of Salisbury plain in Wiltshire. The northeast corner of the parish is the meeting point of small tributaries of Semington Brook. In July 2017, Cain Bio-Engineering was contracted to repair the bank of one of these streams that was eating into a privately owned garden through erosion.

Previous attempts to repair the bank had been made using hazelwood and hardwood posts, but the erosion continued to happen. The failed structure was removed by Cain Bio-Engineering and replaced by a stronger, rock roll based design.

The Solution

Cain Bio-Engineering was selected to undertake the installation of a structure proposed by design engineers hired by the client.

Before

Images of the stream below show the heavy erosion going on behind the failed revetment and into the garden.

During

With site specific adaptations to the design, the installation of 25m of rock rolls were put in place as the base structure that now protects the bank from continuing erosion.

After

The works were completed leaving a sturdy structure, strong enough to stop the erosion of the bank.

The native plants that were seeded into the fibre rolls will now be allowed to grow, ensuring the stability of the bank while remaining aesthetically pleasing.