Early consideration of flood risk and drainage can provide considerable cost benefits, especially where drainage requirements affect development layout and use.
A preliminary Drainage Strategy, undertaken prior to
fixing a developments site layout, can:
Identify the method of surface water discharge, and whether gravity drainage can be achieved;
Establish required discharge rates through calculation of greenfield runoff rates using ReFH (industry leading) software;
Identify the approximate amount of required attenuation storage using industry leading MicroDrainage software;
Inform the location of SUDS based on existing topographical information;
Advise on the type of SUDS required to comply with National SUDS Standards;
Identify any site-specific drainage requirements or constraints through consultation with the Lead Local Flood Authority and Sewerage Undertaker.