P0198-25-001_12_Gympie_Street_Tewantin_SWMP

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 ....................................................................................................... 10

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

Table 3-1: Comparison of Pre-Development vs. Post-Development Peak Flows ...................................................... 14

Table 3-2: Detention Basin parameters......................................................................................................................... 15

Table 3-3: Mitigated Flow comparison to existing ....................................................................................................... 16

Table 4-1: Pollutant Load Reduction .............................................................................................................................. 18

Table 5-1 Pollutant Load Reduction ............................................................................................................................... 21




List of Figures
Figure 2-1: Subject Site Location ..................................................................................................................................... 6

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

Figure 2-3: Friend’s equation (QUDM, 2025) .................................................................................................................. 8

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

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

Figure 3-1 Developed Masterplan .................................................................................................................................. 12

Figure 4-1 MUSIC Model ................................................................................................................................................. 17




Appendices
Appendix A – DRAINS Results

Appendix B – Rational Method Results




  12 GYMPIE STREET, TEWANTIN
  Stormwater Management Plan
  Client Reference: P0198-25-001                            4 November 2025
  Prepared for Novato Group