Changes

*For 50  and 100 year design storms it reduces only 4%  and 1% respectively.  

*For 50  and 100 year design storms it reduces only 4%  and 1% respectively.  

This shows that LID designed for frequent flows will not significantly reduce the post-development peak flows generated from major storms. In order to meet flood control requirements, traditional LID need to be augmented by some flood storage measures such as [[dry ponds]] or [[infiltration chambers|underground storage]]. As noted below, LIDs can be designed with increased temporary storage to increase detention times.  This allows them to function more like underground end-of-pipe facilities (see Honda case study below)

This shows that LID designed for frequent flows will not significantly reduce the post-development peak flows generated from major storms. In order to meet flood control requirements, traditional LID need to be augmented by some flood storage measures such as [[dry ponds]] or [[infiltration chambers|underground storage]]. LIDs can be designed with increased temporary storage to increase detention times.  This allows them to function more like underground end-of-pipe facilities (see Honda case study below).

===Runoff Volume===

===Runoff Volume===