Rain Gardens
Rain gardens (also called bioretention areas) are small, planted areas that help manage rainwater in towns and cities. They are built in dips or low spots near roads and pavements to collect and clean rainwater before it goes into drains.
How Do Rain Gardens Work?
- Collection
Rainwater from roads, cycle paths, and pavements flows into the rain garden through specially designed openings in the kerb. - Storage & Filtration
The water sits in the garden for a short time. The soil and plants help filter out dirt and pollution. - Slow Release
Clean water slowly drains into the sewer system, helping to prevent flooding and reduce pressure on drains.
Why Are Rain Gardens Useful?
- Less Flooding
They reduce the amount of water rushing into drains during heavy rain. - Cleaner Water
Plants and soil remove harmful substances before the water reaches rivers or streams. - Cooling and Shade
Vegetation and planting create shade and cooling in urban areas on hot days - More Nature in Cities
They provide homes for insects, birds, and other wildlife. - Better Looking Streets
Rain gardens add greenery and make streets more attractive. - Safer Roads
They can be part of traffic calming designs and include features like benches or walls to separate pedestrians and cyclists.
Examples in Newcastle
In our city, rain gardens have been added to Pilgrim Street. They collect water from a new cycle path and pedestrian area, helping to keep the area dry and clean. There are also some good examples at the Helix area of Newcastle University as part of the National Green Infrastructure Facility
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