Grant Plant Hire LtdĀ
Margaret Walk, Dumfries, Flood Alleviation Project
Enhancing network capacity, improving operational resilience and mitigating flood risk
Courtesy gphl
Grant Plant Hire Ltd (gphl) was appointed by Caledonia Water Alliance (CWA) to deliver a comprehensive residential wastewater infrastructure improvement scheme, designed to enhance network capacity, improve operational resilience and mitigate flood risk to surrounding residential properties.
The scope of works
- Sewer capacity upgrades: Upgrading the existing sewer network to improve hydraulic capacity and accommodate increased flows.
- New in situ combined sewer overflow (CSO) tank: Constructing a new CSO storage tank to provide additional stormwater storage capacity and alleviate pressure on the existing network.

Courtesy gphl
- Manhole construction & upgrades: Constructing and upgrading fourteen manholes to improve network accessibility, functionality and long-term maintenance.
- New headwall construction: Construction of a new headwall to provide a robust and durable outfall structure.
- Trenchless road crossings: Installation of 50 metres of trenchless sewer crossings through heavily congested utility corridors, minimising disruption to existing infrastructure and road users.

Courtesy gphl
By increasing network capacity and reducing the likelihood of sewer surcharge and flooding, the scheme provides long-term protection to residential properties while delivering a more reliable and sustainable wastewater infrastructure solution.
For More Information, contact us at https://www.gphl.co.uk
Margaret Walk, Dumfries, Flood Alleviation Project
Enhancing network capacity, improving operational resilience and mitigating flood risk
Protection of Assets
Sewers
Stormwater Storage
Stormwater Storage
Surface Water Drainage
