How to control river erosion
Gabion river and stream erosion benfits are…
- Rapid construction and immediate use
- Dissipate flowing water energy
- Semi flexible building blocks for channel stabilisation.
- Have an irregular surface to diffuse and reduce river bank scouring
- Gabions are able to use smaller rock for river bank protection, when larger rip rap is unavailable
- Much cheaper, more flexible and greener than concrete
- Can be installed in wet or dry conditions
- Free draining, with no hydrostatic pressure issues
Meandering river erodes riverbank
Gabion baskets placed on the outside of the river bend to prevent river bank erosion during floods. Geotech filter fabric is placed behind and underneath the gabion baskets to prevent the movement of soil material through the gabions.
Placing first row of gabions
Gabion baskets placed on the outside of the river bend to prevent river bank erosion during floods. Geotech filter fabric needs to be placed behind and underneath the gabion baskets to prevent the movement of soil material through the gabions.
Gabions effective, when first rocks placed
Gabion baskets filled using rocks from the river.
First gabion row complete
Further gabions and landscaping required to complete the repair.