Tag Archives: 1 in 100 year storm

Manningham Council to review and develop budget on stormwater drains

THE TOPOGRAPHY of Manningham and the noticeably wetter weather we are experiencing means flooding is becoming a real and regular issue for residents. In a move to combat this, Manningham Council passed a supplementary motion to improve, prioritise and ultimately increase maintenance, development and budget of Manningham’s drainage network at their council meeting on September 26.

Earlier in the proceedings, Council passed a motion to continue to proceed the Land Subject to Inundation Overlay (LSIO) and Special Building Overlay Schedule 1 (SBO1) to Panel but abandon SBO2 and SBO3. LSIO and SBO overlays are already part of Manningham’s planning process but Amendment C109 is designed to “introduce and/or review the application….in relation to 10,300 properties in Manningham” which have been identified by Melbourne Water and Council as at risk of flooding if a 1–in-100-year storm occurs.

The three new SBO schedules are designed to identify who the responsible authority is and if the flooding is likely to be above or below 100mm.

The motion put forward is to continue to take LSIO and SBO1 to Panel, these overlays will be applied to properties which are built on a natural floodplain or who are at risk of flooding due to “Melbourne Water assets”.

SBO2 and SBO3, which have been abandoned for the moment were to be applied to properties which are subject to flooding due to Manningham Council assets and where stormwater is likely to flood above 100mm (SBO2) or up to 100mm (SBO3).

As a result of this alternate motion being passed, Cr Mcleish put forward a supplementary motion which will use the information collected and the current budget allowance of $10.8M to “prepare a plan to increase that investment for the next budget”.

At the meeting, Cr McLeish said: “Our community hasn’t been aware of the moves we have been making because they are lost in the detail of a budget and lost in the details of our planning processes for that budget; that’s what happens when you are running a business that is $120M and you are making subtle changes to improve fundamental investment.”

Ideally, a council decision which allowed for SBO2 and SBO3 to continue to Panel would equip the council and landowners with the information needed to better protect their properties and future developments from flooding, but the supplement motion to use the information the C109 consultation process has gathered to make our drainage system more efficient is, at least, a step towards a drier solution for our community on the Manningham side of the river.