Minnegang Creek Flood Study Report - Wollongong City Council

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MH41 67.500 15.00 1.500 2.500 .0000 115.62 133.50 3.026 35.00 .0000MH21 67.500 15.00 1.500 2.500 .0000 115.62 133.50 1.606 35.00 .0000MHA 67.500 15.00 1.500 2.500 .0000 115.62 133.50 1.197 35.00 .0000MH30 67.500 15.00 1.500 2.500 .0000 115.62 133.50 1.889 35.00 .0000MH29 67.500 15.00 1.500 2.500 .0000 115.62 133.50 1.946 35.00 .0000MHB 67.500 15.00 1.500 2.500 .0000 115.62 133.50 2.066 35.00 .0000MH28 67.500 15.00 1.500 2.500 .0000 115.62 133.50 2.673 35.00 .0000MH27 67.500 15.00 1.500 2.500 .0000 115.62 133.50 2.726 35.00 .0000MH27A 67.500 15.00 1.500 2.500 .0000 115.62 133.50 5.356 35.00 .0000S005 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .2502 34.00 .0000MH26A 67.500 15.00 1.500 2.500 .0000 115.62 133.50 2.617 35.00 .0000MH26 67.500 15.00 1.500 2.500 .0000 115.62 133.50 2.920 35.00 .0000MH25 67.500 15.00 1.500 2.500 .0000 115.62 133.50 2.977 35.00 .0000S007 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .3794 35.00 .0000MH24 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .9540 35.00 .0000MH23 67.500 15.00 1.500 2.500 .0000 115.62 133.50 1.017 35.00 .0000MHC 67.500 15.00 1.500 2.500 .0000 115.62 133.50 19.146 35.00 .0000MHD 67.500 15.00 1.500 2.500 .0000 115.62 133.50 20.203 35.00 .0000MHE 67.500 15.00 1.500 2.500 .0000 115.62 133.50 20.859 35.00 .0000MH31 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .5133 34.00 1.500MH32 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .6075 36.00 2.000MH36 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .7585 38.00 1.000MH67 67.500 15.00 1.500 2.500 .0000 115.62 133.50 3.118 35.00 .0000Dummy1 67.500 15.00 .0000 2.500 .0000 115.62 .000 23.978 35.00 .0000MH68 67.500 15.00 1.500 2.500 .0000 115.62 133.50 24.287 35.00 .0000MH69A 67.500 15.00 1.500 2.500 .0000 115.62 133.50 34.470 35.00 .0000MH70 67.500 15.00 1.500 2.500 .0000 115.62 133.50 35.074 35.00 .0000MH78 67.500 15.00 1.500 2.500 .0000 115.62 133.50 36.296 35.00 .0000MH62 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .9258 35.00 2.000MH72 67.500 15.00 1.500 2.500 .0000 115.62 133.50 1.012 34.00 .5000MH76 67.500 15.00 1.500 2.500 .0000 115.62 133.50 1.084 35.00 1.000MH77 67.500 15.00 1.500 2.500 .0000 115.62 133.50 3.129 36.00 .0000Dummy2 67.500 15.00 .0000 2.500 .0000 115.62 .000 39.331 35.00 .0000MH79 67.500 15.00 1.500 2.500 .0000 115.62 133.50 40.833 35.00 .0000MH80 67.500 15.00 1.500 2.500 .0000 115.62 133.50 41.124 35.00 .0000MHF 67.500 15.00 1.500 2.500 .0000 115.62 133.50 41.861 35.00 .0000MH87 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .5367 34.00 .0000MH96 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .4602 35.00 .5000SV8507-DO-001 Rev 2 D-718/10/02
MH94 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .0532 32.00 .5000MH95 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .5908 35.00 .0000MH98 67.500 15.00 1.500 2.500 .0000 115.62 133.50 3.377 35.00 .0000MH100 67.500 15.00 1.500 2.500 .0000 115.62 133.50 3.750 35.00 .0000MC1 67.500 15.00 1.500 2.500 .0000 115.62 133.50 46.038 35.00 .0000MH104 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .9547 34.00 .0000MC2 67.500 15.00 1.500 2.500 .0000 115.62 133.50 48.797 35.00 .0000MC3 67.500 15.00 1.500 2.500 .0000 115.62 133.50 50.171 35.00 .0000MH114 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .8469 34.00 .0000MH115 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .9784 34.00 .0000MH110 67.500 15.00 1.500 2.500 .0000 115.62 133.50 2.721 35.00 .0000S055 67.500 15.00 1.500 2.500 .0000 115.62 133.50 1.220 35.00 1.000MC4 67.500 15.00 1.500 2.500 .0000 115.62 133.50 2.838 36.00 .0000Dummy3 67.500 15.00 .0000 2.500 .0000 115.62 .000 55.665 35.00 .0000MH132 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .9084 34.00 .5000MH134 67.500 15.00 1.500 2.500 .0000 115.62 133.50 .9972 35.00 .0000MHG 67.500 15.00 1.500 2.500 .0000 115.62 133.50 2.412 35.00 .0000Dummy4 67.500 15.00 .0000 2.500 .0000 115.62 .000 58.077 35.00 .0000HYDROGRAPHSThe following hydrographs from selected locations along Minnegang Creek are presented for the 1%AEP, 2 hour storm event for existing and future development conditions. It can be seen that futuredevelopment has a negligible effect on the resulting flows in Minnegang Creek.6Future and Existing Conditions - MH27AFlow (m3/s)5432Existing conditionsFuture conditions100 50 100 150 200Time (mins)SV8507-DO-001 Rev 2 D-818/10/02
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Minnegang CreekFlood Study
Page 3:
© Kellogg Brown & Root Pty Ltd, 20
Page 6 and 7:
SummaryThis report presents the det
Page 8 and 9:
The RatHGL modelling indicated that
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FIGURESSectionPageFigure 2-1 Catchm
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ABBREVIATIONSAEPAHDARIAR&RDCPIFDLEP
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2 Catchment DescriptionThe Minnegan
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Figure 2.1CATCHMENT AND STUDY AREAM
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Illawarra Flood Study investigated
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The catchment was divided into 64 s
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To determine the peak flow from the
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5 Hydraulic Modelling5.1 INTRODUCTI
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Table 5-1 MIKE 11 river branchesBra
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elationship that is determined from
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interaction between the numerical m
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significantly affected since the ex
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Since Points A and B correspond to
Page 41 and 42: 5.9 MODEL SENSITIVITY ANALYSESSensi
Page 43 and 44: 555053.09RANCHBY AVEElevation (m AH
Page 45 and 46: Creek and pass directly over Northc
Page 47: 5.12.4 Overland flow pathsAs discus
Page 50 and 51: Table 6-1 Peak design dischargesBra
Page 52 and 53: 55.050.0PMF Flood Level1% AEP Flood
Page 58 and 59: 1% AEP velocities and flow distribu
Page 60 and 61: 2524.52423.5RL (m)231% AEP velociti
Page 62 and 63: RL (m)3433.53332.53231.53130.53029.
Page 64 and 65: Figure 5-6.Table 6-2 Piped drainage
Page 66 and 67: that handrails above these structur
Page 68 and 69: flooding within the catchment are n
Page 70 and 71: 35.01% AEP flood level - blocked ca
Page 72 and 73: 20.01% AEP flood level - blocked ca
Page 74 and 75: Appendix AReferencesBureau of Meteo
Page 76 and 77: Appendix BGLOSSARYSV8507-DO-001 Rev
Page 78 and 79: hydraulicshydrographhydrologyMIKE 1
Page 80 and 81: Appendix CHistorical Flood DataRECO
Page 82 and 83: Time Rain(mm)Time Rain(mm)Time Rain
Page 85 and 86: Appendix DRAFTS HYDROLOGIC MODELSV8
Page 87 and 88: MHE .5359 .3573 12.10 12.10 5.000 1
Page 89 and 90: Mannings n 0.025 0.025 0.025 0.025
Page 91: Mannings n 0.025 0.025 0.025 0.025
Page 95 and 96: Appendix EMIKE 11 HYDRAULIC MODELSV
Page 97 and 98: EXIST ; DENISE2 ; 0.005; 0.133; 100
Page 99 and 100: 22.40; 88.40;23.30; 100.00;25.10; 1
Page 101 and 102: 27.26; 128.96;27.43; 137.64;28.08;
Page 103 and 104: 1; 1.250;0;1.800; 1.250; 0.000; 0.0
Page 105 and 106: PIPE_10; 0.108; EXIST;57.000; 159.0
Page 107 and 108: Appendix FMIKE11 RESULTS SUMMARYThi
Page 109 and 110: BRANCH CHAINAGE PMF 1% AEP 2% AEP 5
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Minnegang Creek Flood Study Report - Wollongong City Council

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