Attachment I - Flood Assessment

Cooroy Hinterland Park Flood Assessment



5 OVERLAND FLOW ASSESSMENT
Cooroy Creek flooding is the dominant source of flooding at the site however design of the park
will also need to allow for the local catchment overland flows from the south. There is a local
catchment of approximately 4.1 Hectares draining through the site from the south. The catchment
extent and flow paths through the site are shown on Image 5-1.




Image 5-1       Local Catchment and Site Flow Paths


The local catchment landuse primarily consists of road, carparks and commercial areas and
therefore catchment runoff will have a potential pollutant loading that is un-suitable for primary
contact without treatment. Further consideration on possible treatment strategies is recommended
for general water flow along this designated drainage path if it is to remain open and accessible to
users of the park. Alternatively, local stormwater runoff could be piped underground to avoid
contact with users of the park.




J00318R1V1                                                                                       10