Stormwater Management Plan

A Stormwater Management Plan (SMP) is a document that outlines how stormwater (rainwater runoff) from a development site will be collected, managed, treated, and discharged to minimise environmental impacts.

It typically includes:

• Site drainage design and flow paths
• Water quality treatment measures (e.g., sediment traps, raingardens, biofiltration)
• Flood mitigation strategies
• Erosion and sediment control during construction
• Compliance with local council and environmental regulations

Stormwater Management Plans help ensure that developments protect waterways, reduce flooding risk, and improve water quality.

Water Sensitive Urban Design (WSUD) is an integrated approach to stormwater management that aims to mimic natural water cycles and improve water quality outcomes within urban developments. WSUD measures are often incorporated into a Stormwater Management Plan and may include raingardens, bio-retention systems, swales, infiltration systems, rainwater harvesting, and permeable surfaces.

Together, SMPs and WSUD strategies help developments manage runoff responsibly, protect waterways, reduce flood risk, improve amenity, and support sustainable water use.