Each SuDS feature has its own specific design specifications, which are expected to be followed unless agreed otherwise with the LLFA. The LLFA ask that where possible softer more environmentally and aesthetically pleasing approaches be taken rather than features such as concrete culverts or metal fencing. For example, where possible gabions, sand sacks and meadow planted sides that encourage wildlife can be used. 

The following section is simply a general summary of the design requirements found within Part D of the CIRIA SuDS Manual C753. For more detailed technical guidance please see the CIRIA SuDS Manual C753.