Media gallery
Category: Stormwater drainage network
Project management
Managed by City of Norwood Payneham & St Peters
Design: TBA
Contractor: TBA
Trinity Valley Drainage Upgrade overview
The Trinity Valley Drainage Upgrade involves the installation of a new stormwater drainage network in the suburbs of St Morris, Trinity Gardens, Maylands, and Stepney (known collectively as the ‘Trinity Valley’) and will be undertaken in four stages.
The upgrade project includes the installation of a new underground drainage network and stormwater detention basin at the St Morris Reserve, to reduce the risk of flooding within the catchment area during significant rainfall events.
The works are designed to:
- increase capacity of stormwater infrastructure
- alleviate future flooding where possible
- protect dwellings from future one in-100-year stormwater events
- utilise Council reserves to act as detention areas
- address upstream flooding to reduce pressure on downstream system.
Stage 1
The final stage of the Drainage upgrade, includes new drainage in the suburbs of Maylands and Stepney and is scheduled to commence in early 2025.
Works will include upgrades to the existing stormwater infrastructure and installation of new stormwater detention culverts.
Project funding
The Federal Government is contributing $9.9 million as part of its Preparing Australian Communities Program, which targets projects that improve resilience against natural disasters.
The investment is being matched dollar by dollar by the Council, resulting in a near $20 million investment to reduce the risk of flooding.
More information
For more information about the stages of the Trinity Valley Drainage Upgrade, visit: