2020-10-21 Final Order - Approval Conditions and Approved Plans - P&E Appeal No 61 of 2018 - RAL17-0504

3.5.2        Floor above Probable Maximum Flood (PMF)
To ensure the opportunity to shelter-in-place during flood events, any future dwellings on the site must be
conditioned to have a minimum habitable floor level above the height of the PMF, being 3.43mAHD.

3.5.3        Flood Height Gauge
Roadside flood height gauge boards are to be installed within the common property to indicate depth of
floodwaters to residents in metres AHD and provide.

Instructions on how to read the gauges will be provided are as follows:

TABLE 3-1    FLOOD HEIGHT GAUGE BOARDS – 135 LAKE WEYBA DRIVE

 Flood           Description                                              Equivalent Flood Event
 Height
 (mAHD)
 1.8m            Major Flood Level at nearby Tewantin River
                 Gauge
 1.61m           Typical road level of Lake Weyba Drive                   1% AEP (current climatic
                                                                          conditions)
 1.5m            Nominated level to cease evacuation and shelter
                 in place
 1.3m            Nominated level to commence site evacuation              Between 2% and 5%AEP
                 Moderate Flood Level at nearby Tewantin River
                 Gauge
 1.1m            Nominated level to prepare for site evacuation           10% AEP
                 Minor Flood Level at nearby Tewantin River
                 Gauge




3.5.4        Flood Height Siren
A flood height siren is to be installed within the common property. This gauge will be installed and maintained
to BOM specifications.

The siren will ONLY be activated if the FEMP Emergency Response has been triggered.

TABLE 3-2    FLOOD HEIGHT SIREN – TRIGGERS AND ACTIONS

 Flood Height     Description                                              Comments
 (mAHD)
 1.3m             Siren to be triggered.                                   Self-evacuate property BEFORE
                  Nominated level to commence site evacuation              Lake Weyba Drive is covered by
                  Moderate Flood Level at nearby Tewantin River            flood water. If there is water over
                  Gauge                                                    road cease evacuation and
                                                                           shelter in place.




Flood Emergency Management Plan | 27 February 2020
135 Lake Weyba Drive, Noosaville                                                                         Page 15
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