Narellan Creek Overland Flood Study (Vol 1) - Flipbook - Page 63
Narellan Creek Catchment
Flood Study
Indirect consequences which indicate properties are not flooded but access to or from
the properties is cut and there is potential for utilities to be disrupted.
Rising road areas: this classification indicates that evacuation routes grade up and out of
the floodwaters.
During the PMF, much more of the study area fall under the 8low flood island9 and 8high flood
island9 classification. These classifications indicate that evacuation is lost early in the flood
with the low flood island classifications indicating that the entire lot is eventually inundated.
Consequently, a PMF would isolate and inundate many properties and would present a
significant emergency response requirement if evacuation is not completed early (noting
that flooding is very
