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
river-bank-erosion

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.

eroded river bank

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.

gabion cages placed in river

Gabions effective, when first rocks placed

Gabion baskets filled using rocks from the river.

gabions in river being filled

First gabion row complete

Further gabions and landscaping required to complete the repair.

gabion first row installed

Rotten timber needs replacing

stream bank needs protection

900mm tall x 900mm thick gabions

gabion erosion control solution

Gabion repairs missing pathway

gabion damaged river bank

Pathway reinstated

gabion erosion repaired

Eroded lake shore repairs

gabion lake shore repair

Gabions enable land to be reclaimed

gabion lake shore repaired
poor gabion design
river undermones gabion
good gabion design