Water News in Scotland for Landscape Professionals: May 2021

Explore the virtual tour of actions being taken by partners in Scotland on tackling climate change and the risk of flooding.

Scottish Water are moving ahead with their work and following the ‘no more in, what’s in out’ policy – which means no more surface water entering into the combined sewer network and limiting surface water entering into surface water sewers that lead to rivers and the sea. Whilst this will drive above ground solutions, like raingardens and biorentention, Scottish Water are also working to remove water from existing surface water sewers.

Find out more: https://virtualtours.hutton.ac.uk/blue-green/  and read about Edinburgh’s water vision. https://planningedinburgh.com/2021/03/01/water-vision/

Cities like Aberdeen, Dundee and Edinburgh all have projects which look at modelling of the surface water flows to include existing restrictions which prevent flow entering the sewer network (such as road gulley capacity) which provides a more realistic picture of where water flows on the surface. These models also enable areas to be identified that can help attenuate the excess water (predicted due to climate change and existing) such as parkland.

The modelling is called 2 Di (2D interactive) modelling. This can be combined with a tool called a SUDs opportunity mapping tool which looks to identify potential areas for ‘above-grounding’ surface water sewers into Suds areas. When combined with the 1:200 risk of flooding from other sources (rivers, coasts and larger storms for surface water), that the Local Council Flood officers look at, the water from all sources can be understood. Many parks and open spaces will have to be redesigned to create water resilient cities of the future in order to protect our cities and towns from all types of flooding.

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