FOUR hotspots have been identified in the Goulburn Mulwaree draft Flood Study.
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Avoca and Fitzroy streets and Park and Braidwood roads were all listed as areas of interest.
The study, prepared for the council by water engineers WMAwater in collaboration with council staff, the Floodplain Risk Management Working Party and the NSW Office of Environment and Heritage, is now open for resident feedback.
A release sent out by the council said initial flood mapping from the Draft Study shows that flood levels had gone down since the last study was undertaken.
The report aims to define mainstream flood behaviour in Goulburn by examining past flood events and undertaking flood assessments for a range of conditions.
Properties surrounding Avoca, Bellevue and Derwent streets were identified as having experienced over floor and yard flooding in the December 2010 flood event. The report stated that this area is the first inundated during a once-in-every-20-years flood.
A one-in-a-hundred-years flood would see depths exceed one metre and "indicates that large area of high hazard flow are experienced: a significant risk to both life and property".
The second identified hotspot, Fitzroy St downstream of Marsden Bridge, was targeted after the community consultation process found a number of properties experienced yard and, in some cases, over-floor flooding in December 2010.
The first threat of flooding occurs in a 'once-in-every-20-years flood'.
Park Road in Eastgrove was considered a priority zone, with flood affected zoning including Emma, Eleanor and Hercules streets.
"Park Rd is a key access route to the Goulburn township [that] is well-used. This river crossing is inundated by flood water relatively frequently causing Eastgrove residents to access Goulburn via Hetherington St or Memorial Rd," the report read.
"A significant amount of risk is present if people attempt to use the crossing during flood and as such management of this during flooding should be a priority."
The final hotspot is situated on the western bank of the Mulwaree River, between the Goulburn Recreation Area (racecourse) and the railway embankment.
This area floods in events larger than once every 20 years.
"The fringes of the flood extent tend to be low hazard, however high hazard flooding does affect some lots."
The report marks the completion of Stage 1 of the Floodplain Management Process.
It is now on public exhibition and the council is seeking comments from the community until close of business on August 16.
The study is available on the council's website, or at the customer service desk in the Civic Centre.