Environmental guidance for your business in Northern Ireland & Scotland

Swales in Sustainable Drainage Systems (SuDS) (1)

Swales

A swale is a shallow drainage channel with gentle side slopes in the ground where water running off a site can collect and soak away.

Swales can be used to channel run-off from roads, yards and car parks where it collects into pools before soaking away. You can also use swales to carry water through a site.

Swales can run alongside roads so that run-off from the road surface can drain directly to the swale. You can also use them in the treatment of lightly contaminated run-off from hard standing around farmyards and farm roads.

When building a swale, you can include check dams to slow the flow of water. This allows the sediment to settle out. You can also use swales to carry water between sustainable urban drainage systems (SUDS) features instead of using pipes. This can reduce the cost of construction and maintenance.

Swales can be used for linking SuDS dealing with run-off from individual sites and SuDS that manage the run-off from large areas.

 

Further information

CIRIA: SUSDRAIN

SEPA: SUDS guidance

Susdrain: Swales

Return to Types of sustainable drainage system

Environmental News Blog

  • BREXIT 'No Deal' Guidance, With BREXIT approaching and no sign of a deal there is some uncertainty surrounding what could happen to regulations and legislation.

  • Leftovers are ‘Good to Go’ this Festive Season, Our green ‘Good to Go’ scheme lets your customers know that their leftovers can be boxed up and sent home with them to be eaten later by the Christmas tree.

NetRegs on NetRegs on youTube

View our latest videos & subscribe to our channel.

NetRegs Update Newsletter

Free monthly email newsletter with environmental updates for Northern Ireland and Scotland

Sign up for free today!

Permits

NIEA - Apply online

SEPA - Application forms