Response to Information Request 10-6-2025 Overland Flow Assessment · OPW25/0042

1.2         Regional Flooding
NSC Interactive Flood Hazard Map identified that the Site is not influenced by regional flooding associated with the Noosa River (refer Figure
1.2).




                                                              SITE




FIGURE 1.2: NSC FLOOD HAZARD MAPPING


1.3         Project Data and Guidelines
The following data has been utilised for this assessment:

•   Site Layout plans prepared by ALTA Engineering (dated 06/12/2024).
•   Survey Tin supplied by ALTA Engineering (31/01/2025).
•   Design Digital Elevation Models supplied by ALTA Engineering (24/02/2025).
•   Proposed Drainage Design supplied by ALTA Engineering (24/02/2025).
•   Design inputs for hydrologic and hydraulic modelling from the Australian Rainfall and Runoff Data Hub.
•   Rainfall and Meteorological Data by Australian Bureau of Meteorology (BoM).
•   Aerial LiDAR data of the ANZLIC Committee on Surveys and Mapping (ELVIS, https://elevation.fsdf.org.au/).
•   Site Stormwater Management Plan supplied by ALTA Engineering (06/12/2024).
The guidelines, standards, and codes considered during the assessment were as follows:
•   Noosa Shire Council Planning Scheme 2020.
•   Planning act 2016 and the associated State Planning Policy (DILGP, 2017).
•   Queensland Urban Drainage Manual 2017 (QUDM).
•   Australian Rainfall and Runoff 2019 (ARR) 2019 (Ball, et al, 2019).




NOOSA CALILE I BBNE01676-0001-REP-001-1                                                                                                     2