Civil Engineering
Drainage & Stormwater
Controlling surface water across a site — attenuation, balancing ponds, piped networks, chambers and outfalls, engineered to manage runoff and reduce flood risk.
Get in TouchControlling surface water across a site — attenuation, balancing ponds, piped networks, chambers and outfalls, engineered to manage runoff and reduce flood risk.
Get in TouchDisturbing ground changes how water moves across it. A renewable development needs drainage that controls surface water, manages runoff and protects both the site and the land around it — often to discharge rates agreed with the planning authority.
HWBC self-delivers the full drainage scope, from land drainage and piped networks to attenuation and balancing ponds, with the earthworks and reinstatement that go with them.
Attenuation crates and storage systems that hold back peak flows and release water at controlled rates.
Excavation, earthworks and shaping of balancing ponds, including inlet and outlet structures.
Surface-water and land-drainage pipe runs, laid to fall and connected through the site.
Drainage chambers, manholes and inspection access built into the network.
Headwalls and outfall structures that discharge safely to watercourses or soakaways.
Drainage integrated with access roads and trackways to keep routes usable.
On a BESS and solar development in East Sussex, HWBC delivered the site drainage — excavating and shaping the balancing pond, installing the chamber network, and building the headwall and outfall that discharge surface water safely.
Earthworks, pipework and structures, all by one team.
Headwall & outfall · East Sussex
Work to the drainage design and the discharge rates agreed for the site.
Excavate ponds and trenches, install pipework, chambers and attenuation.
Build outfalls and headwalls, connect the network and reinstate the ground.
Attenuation
Chambers
Pipework
Balancing pond