River channel/watercourse activities

Flood risk management and land drainage activities

Activity and function

Potential hydromorphological change

Mitigation measures

Channel resectioning and bank reprofiling

Increase conveyance, reduce erosion of the bed or bank, reduce morphological change, reduce sediment supply

Loss of structure and condition of the riparian zone

Loss of morphological diversity (rivers)

Change in sediment regime (rivers)

Good Practice Vegetation Management

Remove Obsolete Structure

Manage and Restore Aquatic and Riparian Habitats

Good Practice Sediment Management

Channel deepening, widening & regrading

To increase conveyance

Change in substrate conditions (rivers)

Change in flow dynamics

Change in surface/ground water interaction

Loss of morphological diversity (rivers)

Change in sediment regime (rivers)

Good Practice Vegetation Management

Good Practice Sediment Management

Manage and Restore Aquatic and Riparian Habitats

Channel realignment 

Reduce conveyance, increase localised flood risk, reducing downstream flood risk, reduce bed stress

Loss of structure and condition of the riparian zone

Change in flow dynamics

Good Practice Vegetation Management

Manage and Restore Aquatic and Riparian Habitats

Remove Obsolete Structure

Bank protection

To prevent / reduce erosion of the channel banks

Change in sediment regime (rivers)

Change in surface/ground water interaction

Loss of structure and condition of the riparian zone

Loss of sediment transfer to the floodplain

Good Practice Sediment Management

Good Practice Vegetation Management

Manage and Restore Aquatic and Riparian Habitats

Remove Obsolete Structure

Modify or Enhance Structure

Bed protection

To prevent / reduce erosion of the channel bed

Change in sediment regime (rivers)

Change in substrate conditions (rivers)

Change in surface/ground water interaction

Loss of morphological diversity (rivers)

Good Practice Sediment Management

Manage and Restore Aquatic and Riparian Habitats

Back to Guidance on selecting mitigation measures