The aim of the project was to protect around 100 houses and businesses that had been subjected to increased flood threats. Constant flooding was a problem with this very flashy river where it passes through the town.

Tregaron Feb 2009
Tregaron being dewatered to allow works
Tregaron Installing Sept 2009
Tregaron Jan 2010
Tregaron Jan 2010
Tregaron July 2016
Tregaron Feb 2009
Tregaron being dewatered to allow works
Tregaron installation Sept 2009
Tregaron Jan 2010
Tregaron Jan 2010
Tregaron July 2016

Salix worked with Arup & Galliford Try on the Tregaron Flood Alleviation Scheme, to improve the very confined channel where the Afon Brennig flows through the town of Tregaron.

The aim of the project was to protect around 100 houses and businesses that had been subjected to increased flood threats. Constant flooding was a problem with this very flashy river where it passes through the town.

A steep, flashy catchment, combined with the close proximity of houses required a quick and effective solution.

The river is also part of a SSSI and SAC meaning any works had to take consideration of the ecological sensitivities including species such as Salmon and Ranunculus.

Rock Rolls and blockstone were used to tie in the VMax Shear Stress Turf and prevent scour from abrasive bedload during large floods.

Products Used

Pre-filled Rock Roll

Rock Rolls are a robust and permanent revetment for use around reservoirs, shorelines, lake edges, streams and river banks. They are cost-effective revetments that are suitable alternatives to rock rip rap and gabions in many scour applications.

VMax³ Shear Stress Turf

Salix have the facilities to contract grow turf using the VMax range of Turf Reinforcement Mats (TRMs). VMax C350 or P550 is used as the reinforcement element within the turf giving unprecedented scour protection performance.

Details

Client: Arup
Location: Tregaron
High Energy Rivers, Rivers & Water Courses