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Channel modifications

Information about the activities we regulate that involve the channel modification of a watercourse and the authorisation you’ll need to carry on each activity.

Channel modification associated with a structure

Find out about the registration authorisation needed to carry out channel modification of a watercourse which affects less than or equal to 15m of channel length and is associated with a structure.

View Channel modification associated with a structure

Channel modification of a previously modified minor watercourse

Find out about the registration authorisation needed to carry out channel modification of a previously modified minor watercourse where the length of channel affected is less than or equal to 500m.

View Channel modification of a previously modified minor watercourse

All other channel modification including flood bypass channels

Find out about the permit authorisation needed to carry out all other channel modifications of a watercourse (including installation of a flood bypass channel).

View All other channel modification including flood bypass channels

Search the public register

Search for an authorisation document that you or someone else holds.

View the public register

Need to speak to someone?

If you need further information or have an enquiry about authorisations, contact us. We aim to respond to your enquiry as quickly as possible.

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