Hydraulic Assessment 29 August 2024

CONTENTS
1.      Introduction                                                                                                                                                                                              1
        1.1         Site Characteristics                                                                                                                                                                          1
        1.2         Project Purpose and Scope                                                                                                                                                                     2
        1.3         Project Data and Guidelines                                                                                                                                                                   2

2.      Hydraulic Assessment                                                                                                                                                                                      5
        2.1         Local Hydrology Model                                                                                                                                                                         5
        2.2         Hydraulic Model                                                                                                                                                                               8

3.      Conclusion                                                                                                                                                                                              12
4.      Qualifications                                                                                                                                                                                          13

Appendices
Appendix A: Site Survey                                                                                                                                                                                         14
Appendix B: Model Data and Calculations                                                                                                                                                                         15
Appendix C: Hydraulic Model Results                                                                                                                                                                             16

Tables
Table 3.1: Catchment Parameters ....................................................................................................................................................................... 5
Table 3.2: Key Modelling Parameters – Hydrology .............................................................................................................................................. 7
Table 3.3: Peak Discharge Comparison – Existing Case Rational Method & WBNM ........................................................................................... 7
Table 3.4: Adopted Manning’s ‘n’ Roughness ..................................................................................................................................................... 8

Figures
Figure 1.1: Site Locality ........................................................................................................................................................................................ 1
Figure 2.1: Catchment Plan .................................................................................................................................................................................. 6
Figure 2.2: TUFLOW Setup ................................................................................................................................................................................... 9




38 BARINA COURT, POMONA I BBNE00000_0020-REP-001-0                                                                                                                                                               iii