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Trees and plants are at risk Overview
Limited pipe capacity, of drought, due to lack of
as well as blockage, rainwater.
can cause local
flooding

12

‘Flashy’ flows can
cause erosion of
watercourses

Pollution can be
washed into
streams, rivers
and the sea.
Recharge of Hydrocarbons and
Quick conveyance of groundwater and tyre crumb are
rainwater from site can aquifers is prevented, examples.
increase the risk of and ‘baseflows’ to
flooding elsewhere. watercourses are lost.

Conventional drainage results in high rates and
increased amounts of runoff reaching streams
and rivers. Pollution from urban surfaces is also
washed into watercourses.

The Royal Borough of Kensington & Chelsea SuDS D & E Guide © 2018 McCloy Consulting & Robert Bray Associates