Shoreline structures

Engineering activities

Activity and function

Potential hydromorphological change

Mitigation measures

Seawalls, embankments and revetments

To arrest the landward recession of the backing landforms by providing a physical barrier against marine processes and reflecting wave energy or breaking up wave energy at the structure's toe.

To prevent the inflow of tidal waters to an area of low lying land.

Change in tidal prism

Loss of area of intertidal zone

Change to hydrodynamics (TraC)

Manage and Restore the Intertidal Zone

Gabions, aprons, breastwork, armour

 To slow the landward recession of the backing landforms by marine processes. To provide protection to the toe of an existing structure against undermining and to help reduce overtopping.

Change in sedimentary regime (TraC)

Change to hydrodynamics (TraC)

Manage and Restore the Intertidal Zone

Good Practice Sediment Management

Back to Guidance on selecting mitigation measures