Our Water Services team helps make sure new buildings and developments don’t cause flooding or problems in local drainage systems. We do this by carefully studying how water will flow from these sites, using special software and expert knowledge.

This work, called a Drainage Impact Assessment (DIA), is required when there’s a chance the new development could overwhelm public drains or cause sewers to overflow.

We simulate what might happen during storms and help design solutions if required. Fixes could include adding extra drainage or slowing the water down. This makes sure everything works well with the existing system and helps the project get approved.

 

Plan view output from InfoWorks ICM

Recently, our team has enhanced its drainage assessment capabilities through strategic software investments and experience gained from a major flood prevention projects.

We now deliver high-quality DIAs across Scotland, meeting Scottish Water’s requirements to assess how proposed developments may affect public drainage networks, including flood risks and CSO performance.

Using Scottish Water’s Infoworks ICM models, we simulate a range of storm events and assess impacts across relevant sections of the network. Where necessary, we develop integrated mitigation solutions in collaboration with our infrastructure teams, aligned with development goals and securing connection approvals.

If you would like to discuss our DIA services or any of our other hydraulic modelling capabilities, please contact Laurent Glasson at laurent.glasson@fairhurst.co.uk

Longitudinal Profile along Network Branch from InfoWorks ICM

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