The TREENET Inlet system is an emerging WSUD tool which harvests road runoff from residential streets and arterial roads to irrigate street trees. By intercepting the ‘first flush’ of stormwater, TREENET Inlets remove pollutants near their source and promote biosequestration of nutrients such as phosphorus and nitrogen that might otherwise cause algal blooms in receiving waters downstream . TREENET Inlets are installed in the kerb; they connect to an infiltration trench or ‘leaky well’ which detains the water until it soaks into the soil in the nature strip. By placing this water in the soil profile at a distance from the tree (ideally midway between two street trees) a moisture gradient is set up whereby root development is toward the source and away from other hard infrastructure. Trees are then able to  redistribute this water to other drier  locations in the root zone by a process known as hydraulic lift. This reconstructed root array also creates biopores through seasonal growth of finer absorption roots thus increasing the natural permeability of the verge profile.

R750 Treenet Inlet Model Specification

Case Studies

Expression of Interest

Expressions of Interest (EOI) are invited from councils wishing to partner with Space Down Under in a sustainable stormwater harvesting research and development project. Space down Under is dedicated to research and development of the TREENET kerb side inlet and site-specific verge infiltration zones for healthy tree growth in the urban environment.

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R750 TREENET Inlet

Inlet components • Kerb anchor block • R 750 stainless steel faceplate • M8 × 30 mm stainless steel cap bolts • 100×50×90 mm PVC coupling

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Goodwood Road upgrade

Goodwood Road is a major thoroughfare through the suburb. A makeover in 2017 has improved the ambience and attraction for locals and visitors to the shopping and entertainment precinct. The design by Jensen

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