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River Training

River Bank Overflow Protection

River Bank Works - Overflow Erosion Protection

Climate change is likely to increase demand for flood protection work. For some areas in Europe, greater peak river flows are anticipated with a consequent increased risk of flooding.

Problems

The more obvious protection measures frequently introduce additional problems:

• Larger channels can reduce flood risk but are expensive, and have a considerable adverse environmental impact.
  
  
• If river embankments are overtopped, the embankments themselves are at risk from erosion by the overtopping water OSA being placed.

Solutions

• Relatively low value land can be used as temporary flood plains, with overflow waters contained by earth embankments.
  
  
• Durable erosion protection for flood conditions - either OSA on geotextile or the asphalt-reinforced geomat - may also be placed on the 'dry' side of the river embankment Revetment during flood conditions.
  

The pictures show both measures on a Belgian river.

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