17 Bottlebrush Avenue, · MCU26/0001

List of Tables and Figures



List of Tables
Table 1-1 Property Details ................................................................................................................................................ 4

Table 2-1: Rational Method key inputs ............................................................................................................................ 8

Table 2-2: Rational Method flow calculations ................................................................................................................. 8

Table 2-3: DRAINS results for existing catchment ......................................................................................................... 9

Table 2-4: Comparison between DRAINS and the Rational Method ........................................................................... 10

Table 3-1: Comparison of Pre-Development vs. Unmitigated Post-Development Peak Flows ................................ 13

Table 3-2: Detention tank parameters .......................................................................................................................... 14

Table 3-3: Mitigated Flow comparison to existing ....................................................................................................... 15




List of Figures
Figure 2-1: Subject Site Location (QLD Globe, 2025)..................................................................................................... 6

Figure 2-2 Max overland flow path .................................................................................................................................. 7

Figure 2-3: Overland sheet flow times (QUDM, 2025) ................................................................................................... 7

Figure 2-4: DRAINS model for existing catchment ......................................................................................................... 9

Figure 2-5: DRAINS catchment inputs ............................................................................................................................. 9

Figure 3-1 Proposed Stormwater Layout ....................................................................................................................... 11




Appendices
Appendix A – DRAINS Results

Appendix B – Rational Method Results




  17 BOTTLEBRUSH AVENUE, NOOSA HEADS
                                                            7 January 2026
  Stormwater Management Plan
  Client Reference: P0433-25-001
  Prepared for Made Capital PTY LTD