Our experts can support you through all stages of flood protection and Surface Water Resources Management Schemes to satisfy their compliance obligations and ultimately protect people and communities. We develop strategies to increase climate change resilience for existing flood defence assets including, but not limited to, the use of Natural Flood Management.
Sweco promotes innovative solutions that work with natural processes, optimising sustainability and multiple benefits and ensuring that interventions are flexible enough to respond to our evolving understanding of climate change and future land use. In urban areas these solutions include retrofitting of surface water systems and sustainable drainage – creating new habitat, biodiversity, water treatment, flood attenuation and amenity.
Where necessary, Sweco can mobilise an exceptionally wide range of in-house skills and experience to produce traditional solutions, such as flood walls, bunds and underground drainage assets.
Our Flood Risk Assessment and network modelling teams cover a wide range of diverse projects. We have significant expertise in the areas of sewerage, river, surface and groundwater modelling and management and have developed strategies and action plans for our clients as they look for more innovative, integrated long term solutions to the challenges of flooding, drainage and water management.
How we can help
The impact of flooding on infrastructure and communities is often well publicised and understood. However, the same is not true for the possible causes of flooding as these are often difficult to identify, complex, and challenging to understand.
Whilst it may seem obvious in some situations (e.g flooding from the river or drainage system), the magnitude and underlying flood mechanisms change with time. There are many variables to consider, all of which influence the conveyance of water and can result in a situation that requires specialised technical expertise to investigate.
Problem Investigation
Flood incident and problem investigation of both property and infrastructure flood risk
Culvert investigation, assessment and design
Hydraulic analysis of open channels and hydraulic structures such as culverts using both simplified assessment and hydraulic modelling
Site reconnaissance including utility investigation, topographical surveys and geotechnical investigation
Design
Business cases for funding applications
Natural flood management and river restoration
Flood compensation
Containment works – floodwalls and embankments
Hydraulic controls such as orifice plates, hydro-brakes, flap valves, penstocks and sluice gates
Attenuation – online/offline storage reservoirs
Exceedance flow management with controlled overtopping, flood relief and discharge
High capacity drainage to manage overland flow routes
Pumping stations
Construction
Permit consent and approval applications including: Town and county planning, Ordinary Watercourse Consent, Controlled Activities Regulations and Flood Risk Activities Permit (FRAP)
Site supervision and office based design support
Asset Management
Flood defence asset condition surveys and remedial works design
Maintenance and management plans
Public safety risk assessments
Culverts, Screens & Outfalls support
The main function of a culvert is to convey surface water or a watercourse beneath a structure or below ground. Structurally this could take many forms from pipes, integral box units, to arch culverts formed of single or multiple barrels in simple or complex arrangements. Whilst the hydraulic performance of a culvert is important to manage flood risk, culverts also convey sediment, debris and wildlife.
Whether new or existing, it is important that the performance of a culvert is appropriate for the location and environmental setting to avoid detriment to property/infrastructure and the natural environment.
At Sweco, we have the multi-disciplinary expertise and extensive water management knowhow to help you address any culvert, screen or outfall challenge.
Our full-lifecycle water consultancy services include:
Together with our clients and the collective knowledge of our 22,000 engineers, consultants and other specialists, we co-create solutions to address urbanisation, capture the power of digitalisation, and make our societies more sustainable. With international multi-disciplinary teams, we can call on the right insight and technical capability at the right time from across Buildings, Infrastructure, Advisory & Planning and Compliance.
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