Invasive weeds: Guidance for the control of invasive weeds in or near fresh water

Responsibility for invasive weed control

In controlled waters, the responsibility rests with the operational authority responsible for flood defence, water quality or navigation. For rivers, canals and drainage channels in England and Wales, this is usually the Environment Agency, British Waterways or Internal Drainage Boards respectively. In lakes, this is usually the owner or user of the water, for example fishing or angling clubs. Control efforts by individuals can help to reduce the spread of invasive non-native  species if they are coordinated as part of an overall management strategy.

Riparian owners efforts are far more successful if control is attempted on a catchment basis. This means working from the upstream end to reduce the chances of recolonisation.

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