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MCU14/0106 Appendix E - Engineering Report
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Noosa Civic
Stormwater Management Plan
Table 2-3 Detention Basin Stage-Storage Details
Stage/ Depth Storage Volume
(m) (m3)
0.0 0.0
0.1 1.8
0.2 7.9
0.3 16.2
0.4 26.7
0.5 39.8
0.6 55.9
0.7 75.1
0.8 97.8
0.9 124.2
1.0 154.7
1.1 189.5
1.2 229.0
1.3 273.3
1.4 322.9
1.5 377.9
1.6 438.7
1.7 505.6
Table 2-4 presents the resulting pre- and post-developed flows for the range of Average Recurrence Interval
(ARI) flood events.
Table 2-4 Total Site Discharge
ARI Pre-development Post- Post- Mitigated Mitigated
(Years) Discharge development development Discharge Impact
(m3/s) Discharge Impact (m3/s) (m3/s)
(m3/s) (m3/s)
2 4.1 4.3 0.2 3.8 -0.3
5 5.5 5.7 0.2 5.2 -0.3
10 6.4 6.5 0.1 6.2 -0.2
20 7.6 7.7 0.1 7.5 -0.1
50 8.7 8.7 0.0 8.6 -0.1
100 9.9 9.9 0.0 9.9 0.0
The proposed basin in conjunction with storage in the car parks will provide sufficient mitigation of runoff to
ensure that there is no increase in peak flow rate discharged from the site.
QIC Noosa Civic Pty Ltd Version 1 November 2014
Appendix D - SMP.docx Page 4
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