Is my project impacted by flooding?

Link for QR code above — Stellen Council Contact List

How do I know if my project is flood-affected?


THE S10.7 PLANNING CERTIFICATE WILL OFTEN GIVE A FALSE NEGATIVE


Here is the 10min self-cheek that we use:


CHECK FOR MAINSTREAM FLOODING


  • Physical clues

  • the site is low lying or a few hundred metres from a waterway. 

  • nearby buildings-especially newer ones-are raised. 

  • Flood studies

  • Check if there is one by searching the stream or catchment name at flooddata.ses.nsw.gov.au/flood-projects 

  • Check flood studies on exhibition, for example

yoursay.woollahra.nsw.gov.au

  • If required, call the council engineer directly.

  • In the study, go to the appendix maps.

  •  Check the flood extents for: 1% AEP and PMF(If you have a basement) 

Use our Council Contact List Here *(Barcode here)* 

Diagram 1 

  • 1% AEP is blue 

  • PMF is purple

CHECK FOR OVERLAND FLOW

  • Sag point

  • Does the street, in front or behind, rise in both directions?

  • Is the property in or near a natural gully?(check Google Earth 30)

  • Council stormwater pipe nearby

  • Is there a sag pit in the street nearby?

  • Are there visible pit lids on the property or on the neighbour's? 

Diagram 2 (SAG PIT) 

  • Sag pits have a grate in the middle rather than the edges

  • Pipe

Diagram 3

  • This part visible 

  • Typical stormwater pit lid. 

If any of these checks come up positive you probably have some flood impact.


If you get stuck, email me. One of us can do these checks for you quite quickly.


(If you received this email from me, that means you're part of our inner-circle- the flood check is free, for you.)


Prepared for you by Ian 🙂 Ian.warren@stellenconsulting.com.au

Ian Warren