H - Revised Integrated Water Management Plan by Cardno (inc MUSIC file) (13.09.19)

                                                                                 Integrated Water Management Plan
                                                                         Noosa Marketplace : 2-20 HOFMANN DRIVE




Figure 7-3    Drainage Upgrades

The peak 1% AEP flood level at the north-west corner of the site (Figure 7-1, P1) is approximately RL 9.1
mAHD, dropping to 8.4 mAHD at P4. The flow path (Figure 7-4) around the north-eastern corner of the
development area has a crest at 8.3 mAHD at the north eastern corner of the site and thereby acts as
the hydraulic control for flood waters on the northern portion of the site. The floodplain to the north of the
building footprint retains floodwater and drains via a field inlet connected to the 750 mm RCP through the site
via a 525 mm RCP (Figure 7-3, C30). This drainage feature allows the area to the north to drain more
efficiently after a flood event.




V190428 | 10 September 2019 | Commercial in Confidence                                                        27