SuDS Reports and Hydraulic Calculations

hydraulic calculations

SuDS Reports and Hydraulic Calculations

hydraulic calculationsSuDS reports are requested by local authorities as a part of the planning process, or to discharge planning conditions relating to Surface Water Management.  The level of detail required in these reports is very much dependant on the nature and scale of the development, and whether the proposed development site is within a critical drainage area, or an area at a high risk of surface water flooding. Due to our nationwide experience, we can also advise clients on whether or not a SuDS report would be required for their project.

Our SuDS reports can include as much or as little of the following, as per relevant local authorities requirements:

  • Flood Risk Assessment, assessing the flood risk from all sources, and providing mitigation measures where necessary (this is required to accompany the planning applications for all major developments within a flood zone 1)
  • Pre and post development surface water run off calculations
  • Pre development contributing area and exceedance route plans
  • Post development contributing area and exceedance route plans
  • Percolation tests to BRE365
  • BRE365 Soakaway Sizing calculations
  • Surface water attenuation calculations
  • Discussion of SuDS hierarchy in line with the local and national policies
  • Proposed SuDS strategy in line with local and national policies
  • Outline SuDS design Layout plans
  • Detailed SuDS Design plans, for construction management and maintenance plans for the SuDS for the lifetime of the development

If you have a project that requires this service, then please contact us on 0800 0614916 or