Appendix F - Flood Study

                                                                                                      Flood Study
                                                                                            Noosa Care - Carramar




Figure 5-1 Comparison Points around Site

The peak water level and depth figures for the 1 and 10% AEP climate change events are provided in Figures
6-1 to 6-8. The flood mapping is more accurate than the flood extent mapping from the 2006 flood study as
the peak flood levels have been calculated at each cell, rather than interpolated between 1D cross-sections,
and properly account for the flood behaviour of the dam.

5.3            Culvert Blockage
A range of culvert blockage factors was analysed. The results showed that complete blockage of the
downstream Carramar Street culverts had negligible impact on the peak water levels within the site.

5.4            Regional Flood Levels
The Flood Information Certificate (Appendix A) indicates that there is no historical information regarding flood
levels for this property. The 1% AEP with climate change regional flood levels for the site range from 8.3 mAHD
at the northern site boundary to 10.3 mAHD at the southern site boundary.
The regional 1% AEP flood extent mapping, obtained from Noosa Council Interactive Mapping is provided in
Appendix B. The regional 1% AEP inundation extent, compared to the local 1% AEP inundation extent, is
shown below in Figure 5-2. The yellow area is the regional flood extent and the blue line is the local flood
extent.




24 July 2017                                        Cardno                                                    13