Flood Study Update

Storm - Moulder Park - National Avenue Orange - 26 Dec 2010 (Photo - John Kich)

Orange City Council is updating an earlier flood study, which aims to identify areas of potential flooding.

On this site you can :

  • find out more about the study, as well as how and why it was produced
  • learn about the main types of flooding that are being identified
  • look at maps which show the areas of Orange which the study identifies as being potentially affected by flooding.

On this site you can also :

  • find out more about the connections between the flood study and Orange's Planning & Development processes
  • leave a comment, or learn how to make a formal submission
  • ask a question


Orange City Council is updating an earlier flood study, which aims to identify areas of potential flooding.

On this site you can :

  • find out more about the study, as well as how and why it was produced
  • learn about the main types of flooding that are being identified
  • look at maps which show the areas of Orange which the study identifies as being potentially affected by flooding.

On this site you can also :

  • find out more about the connections between the flood study and Orange's Planning & Development processes
  • leave a comment, or learn how to make a formal submission
  • ask a question


Hear you can make a comment about any aspect of the new flood study, you can leave a comment here and see the comments of others.

You can also make a formal submission to the council about the flood study. You can find out about making a formal submission here.

If you wish to make a formal submission about the proposed LEP or DCP amendments, you can find information here about making a submission here. 

The deadline for making a formal submission about either the flood study or the proposed changes to the LEP & DCP is Monday 26 August. 
CLOSED: This discussion has concluded.

ATTN : Liz Rogers. Thank you for your comment. When it comes to the details of individual properties or the broader question of council's flood mitigation work in Casey Street, rather than answers on a public website, it would be best to contact the council 6393 8000 and arrange to speak face to face with one of the engineers dealing with the flood study. ~ OCC Communications team

agr 2 months ago

Hi, in response to your letter of 12 July I don't believe 67 Casey Street is within the overland flow area. I have looked at Map 3 and note that the overland flow is located west of the property. The blue shading which touches our property is associated with a black line which runs perpendicular to the direction of flow of the overland flow area. Overland flow goes downhill not sideways unless there is a physical structure causing the change in direction. Can you advise please. Thanks, Liz Rogers

Liz Rogers 3 months ago

As a Moulder St ratepayer, it would be appreciated if Council gives priority to rectifying the stormwater drainage on the NW corner of Moulder and Sale Sts.During useful rains, accumulated water across the N gutter of Moulder St between Hill and Sale Sts makes it very difficult to walk across Moulder St without getting very wet with the possibility of an accident with traffic.

Moulder St Rate Payer 3 months ago

the basis of scattered sites of potential overland flow being in many cases specifically located in the rear yards of allotments and sporadic locations scattered throughout the city is not a true indication or reflection of anything. The mapping is at such a scale that it can at best be only described as indicative due to the manner in which it was implemented and I would dispute the purported accuracy of the flyover data recoding accurate ground level contour. If this plan is passed and adopted it will automatically transfer the onus of proof otherwise onto the land owner requiring a survey and report on potential impact adding additional cost, time and delays in general development including new building works, addition to and alterations to existing buildings, the erection and or the replacement of a fence and even the variance of administrative boundaries by subdivision (excluding boundary adjustment). Letters have been sent to land holders identified as being affected, so what level of exacting detail on a site by site basis is being provided to these landholders as justification of the newly mapped potential liability which will impact their land use, their land values and their insurability of their land and buildings. I do not dispute that it is useful tool however, it should be used as nothing more than a reference document, except where the central streams are likely to and are well know to have inundated property in the past. The considerations of impact should be to the potential for damage or loss of life where flow and velocities are high. Small isolated pockets in minimal catchments not connected to any significant flow paths would be nothing more than ponding, at in the worst case scenario a minimal level with no velocity and limited potential to impact property or life.

Wayne McDonald 3 months ago