Maintenance activity (rivers)

Flood risk management and land drainage activities

Activity and function

Potential hydromorphological change

Mitigation measures

Sediment management

Dredging or agitation of sediments to mobilise downstream / remove from channel to maintain competence

Change in substrate conditions (rivers)

Good Practice Sediment Management

Vegetation management and clearance

Removal of in-stream vegetation as a result of growth to maintain system competence.  To remove vegetation that could reduce strength of materials (or conceal or create structural faults)

Spread of invasive species Good Practice Vegetation Management

Blockage removal

Removal of accumulated debris from the system, particularly at culverts/screens etc to maintain through-flow in the system

Change in sediment regime (rivers)

Manage and Restore Aquatic and Riparian Habitats

Good Practice Sediment Management

Vermin control (embankments)

To eradicate vermin that can cause voids in structures

Spread of invasive species

Good Practice Vegetation Management

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