A comprehensive guide of how tree pits work, benefits and design considerations.
Design Scale: Precinct, Street
Tree pits are biofilters generally built into the side of roads that receive stormwater runoff from roads. Tree pits can be used in place of conventional street tree/side entry pit systems. The stormwater runoff provides a valuable water source for maintaining street trees in a drying climate. Tree pits treat runoff from small rainfall events, through filtration, extended detention and some biological uptake of nutrients. Overflow from larger rainfall events may bypass the tree pit and flow along the street into the downstream stormwater management system. Detention cells at the base of the pit may be connected to conventional stormwater pipes to manage overflows from larger events where necessary.
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Supporting community wellbeing and healthy environments within resilient and sustainable places throughout Western Australia.
