Urban sites need to manage runoff without sacrificing space for healthy trees. LID tree pits use soil, planting and engineered components to capture, filter and manage water close to where it falls.
LID tree pits manage runoff within the planting system rather than sending it directly to conventional drainage. Water is captured, filtered and stored in the soil volume, then infiltrated, taken up by the tree or released in a controlled way before entering wider drainage networks.
ArborFlow combines tree planting with Low Impact Development, capturing and managing stormwater in the tree pit.
Controlled entry of surface runoff into the tree pit
Stormwater storage provided within engineered soil volumes
Integration with structural soil cell systems where needed
Compatible with standard sidewalk construction methods
Layouts that adapt to site conditions and drainage strategies
An effective LID tree pit depends on several elements working as one system. Together they manage how water enters, moves through and leaves the tree pit while protecting rooting conditions and supporting paved surfaces above.
Soil cells, storage and distribution components, irrigation and aeration, root management and tree protection can be selected and configured to suit the hydraulic, planting and site requirements of each project.
Protects uncompacted rooting soil beneath sidewalks and other paved urban surfaces
Provides attenuation storage and distributes water evenly throughout integrated ArborFlow systems
Captures, filters, stores and reuses stormwater within an integrated tree pit to support healthy urban trees
Delivers irrigation water and air directly to the root zone for healthy growth
Supports healthy root conditions through irrigation and oxygen exchange below ground
Provides filtration, separation and stability within the below-ground pit system
Site conditions, drainage objectives and tree requirements vary by project. Our technical team supports hydraulic design, CAD coordination, specification and appropriate system selection to help develop an effective LID tree pit strategy.
Planning a streetscape, park, campus or commercial development? Our team supports LID tree pit design, selection, specification, CAD coordination and technical requirements from early design through installation.
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