Floodwater Management

Flood risk

Nijhuis i-CONSULT has been dealing with flood risk and the planning system for over fifteen years and is well established and regarded consultant. We produce flood risk assessment reports to support developments from single house sites up to major housing and commercial projects.

Where flood risk is a planning consideration, we will provide initial advice on the viability of developments and given a detailed quote for the production of the site specific flood risk assessment.

Our services include:

  • Flood flow estimation
  • 1D and 2D hydraulic modelling
  • Planning negotiations with the Environment Agency and Planning Authority
  • The provision of Flood Risk Assessments to support planning applications across the UK and Overseas.
  • Site surveys
  • Flood-water-management
  • Sustainable-drainage-system

Sustainable Urban Drainage Systems (SuDS)

Increasing urbanisation has caused problems with increased flash flooding after sudden rain. As areas of vegetation are replaced by concrete, asphalt, or roofed structures, the area loses its ability to absorb rainwater. This rain is instead directed into surface water drainage systems, often overloading them and causing floods.

In the UK, with the introduction by the government of the new Lead Local Flood Authority (LLFA) as a statutory planning consultee on any developments of 10 houses or more SuDS are increasingly becoming a planning necessity.

What are SuDS systems?

The idea behind SuDS is to try to replicate natural systems that use cost effective solutions with low environmental impact to drain away dirty and surface water run-off through collection, storage, and cleaning before allowing it to be released slowly back into the environment, such as into water courses.

This is to counter the effects of conventional drainage systems that often allow for flooding, pollution of the environment – with the resultant harm to wildlife – and contamination of groundwater sources used to provide drinking water. The paradigm of SuDS solutions should be that of a system that is easy to manage, requiring little or no energy input (except from environmental sources such as sunlight, etc.), resilient to use, and being environmentally as well as aesthetically attractive.

  • Drainage-system
  • SuDS-systems

​i-CONSULT has many years of experience in designing SuDS systems

i-CONSULT has many years of design experience on SuDS systems and run the latest design software for SuDS design and simulations. Early discussions with the architect to ensure adequate space is allowed for SuDS features in the site layout can save costly re-design or planning refusals.

Our services include:

  • Runoff and SuDS calculations.
  • On site percolation testing.
  • SuDS design and detailing.
  • WinDES Microdrainage modelling of SuDS and pipework.
  • Liaison with planning authority and LLFA over SuDS.