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Flood Investigation & Stormwater Quantity Management Plan
Attached to the e-mail Doonella Stage C (Email 4 of 7) IDAS Forms 1 & 6 and Flood Investigation - OPW14/0197.
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Log in to see the plans as drawn Flood Investigation & Stormwater Quantity Management Plan
Proposed Residential Development at Doonella - Stage C
C2: HEC RAS Results Table for 100 Year ARI (Mitigated Scenario Flows)
100 YEAR ARI RESULTS - PLAN 02 - MS Revision
River Min Ch W.S. Crit E.G. Vel Vel Vel Vel Flow Froude #
Sta Q Total El Elev W.S. Elev Left Chnl Right Total Area XS
(m3/s) (m) (m) (m) (m) (m/s) (m/s) (m/s) (m/s) (m2)
348 1.07 13.88 14.29 14.16 14.31 0.51 0.51 2.1 10.12
308 1.07 12.03 12.32 12.32 12.4 1.2 1.2 0.9 6.09
274 1.38 10.8 12.03 11.13 12.03 0.02 0.1 0.03 0.09 14.66 24.12
252 1.38 9.97 12.03 10.15 12.03 0.03 0.03 0.03 0.03 42.62 37.07
234 1.38 9.26 12.03 9.52 12.03 0.02 0.02 0.02 0.02 75.49 48.85
220 Culvert
213 1.38 8.56 8.92 8.72 8.93 0.41 0.41 3.33 12.19
198 3.11 8.2 8.66 8.5 8.69 0.69 0.32 0.69 4.53 15.12
166 3.11 7.54 7.81 7.74 7.83 0.57 0.62 0.77 0.63 4.92 25.84
141 3.11 7.11 7.77 7.34 7.77 0.29 0.19 0.17 0.21 14.89 32.86
121 3.11 6.99 7.75 7.24 7.75 0.35 0.15 0.02 0.22 14.11 28.59
101 3.11 7 7.73 7.33 7.74 0.48 0.2 0.32 9.85 24.47
90 3.11 6.4 7.73 6.8 7.73 0.12 0.11 0.14 0.12 26.46 37.79
75 Culvert
60 5.18 6.07 7.6 6.35 7.6 0.14 0.12 0.16 0.13 40.71 37.87
100 YEAR ARI RESULTS FOR SENSITIVITY CHECK (n=0.15) - PLAN 03 - MS sens
River Min Ch W.S. Crit E.G. Vel Vel Vel Vel Flow Froude #
Sta Q Total El Elev W.S. Elev Left Chnl Right Total Area XS
(m3/s) (m) (m) (m) (m) (m/s) (m/s) (m/s) (m/s) (m2)
348 1.07 13.88 14.38 14.16 14.38 0.35 0.35 3.03 12.16
308 1.07 12.03 12.32 12.32 12.4 1.2 1.2 0.9 6.09
274 1.38 10.8 12.03 11.13 12.03 0.02 0.1 0.03 0.09 14.68 24.13
252 1.38 9.97 12.03 10.15 12.03 0.02 0.04 0.02 0.03 42.62 37.07
234 1.38 9.26 12.03 9.52 12.03 0.01 0.02 0.01 0.02 75.49 48.85
220 Culvert
213 1.38 8.56 9.02 8.72 9.02 0.3 0.3 4.56 13.58
198 3.11 8.2 8.7 8.5 8.72 0.62 0.18 0.62 5.06 15.64
166 3.11 7.54 7.93 7.74 7.94 0.21 0.41 0.28 0.39 8.01 27.97
141 3.11 7.11 7.84 7.32 7.84 0.14 0.2 0.09 0.18 17.44 34.95
121 3.11 6.99 7.81 7.22 7.81 0.22 0.19 0.03 0.2 15.74 29.85
101 3.11 7 7.74 7.3 7.74 0.34 0.28 0.31 10.1 24.71
90 3.11 6.4 7.73 6.8 7.73 0.07 0.13 0.08 0.12 26.46 37.79
75 Culvert
60 5.18 6.07 7.6 6.32 7.6 0.08 0.14 0.1 0.13 40.71 37.87
B09182.W-02A
[OCR of page images]
Flood Investigation & Stormwater Quantity Management Plan
Proposed Residential Development at Doonella - Stage C
BROWN
Smart Water
C2:
HEC RAS Results Table for 100 Year ARI (Mitigated Scenario Flows)
100 YEAR ARI RESULTS - PLAN 02 - MS Revision
River Min Ch W.S. Crit E.G. Vel Vel Vel Vel Flow Froude #
Sta Q Total El Elev W.S. Elev Left Chni Right Total Area xs
(m3/s) (m) (m) (m) (m) (m/s) (m/s) (m/s) (m/s) (m2)
348 1.07 13.88 14.29 14.16 14.31 0.51 0.51 2.1 10.12
308 1.07 12.03 12.32 12.32 12.4 1.2 1.2 0.9 6.09
274 1.38 10.8 12.03 11.13 12.03 0.02 0.1 0.03 0.09 14.66 24.12
252 1.38 9.97 12.03 10.15 12.03 0.03 0.03 0.03 0.03 42.62 37.07
234 1.38 9.26 12.03 9.52 12.03 0.02 0.02 0.02 0.02 75.49 48.85
220 Culvert
213 1.38 8.56 8.92 8.72 8.93 0.41 0.41 3.33 12.19
198 3.11 8.2 8.66 8.5 8.69 0.69 0.32 0.69 4.53 15.12
166 3.11 7.54 7.81 7.74 7.83 0.57 0.62 0.77 0.63 4.92 25.84
141 3.11 7.11 7.77 7.34 7.77 0.29 0.19 0.17 0.21 14.89 32.86
121 3.11 6.99 7.75 7.24 7.75 0.35 0.15 0.02 0.22 14.11 28.59
101 3.11 7 7.73 7.33 7.74 0.48 0.2 0.32 9.85 24.47
90 3.11 6.4 7.73 6.8 7.73 0.12 0.11 0.14 0.12 26.46 37.79
75 Culvert
60 5.18 6.07 7.6 6.35 7.6 0.14 0.12 0.16 0.13 40.71 37.87
100 YEAR ARI RESULTS FOR SENSITIVITY CHECK (n=0.15) - PLAN 03 - MS sens
River Min Ch W.S. Crit E.G. Vel Vel Vel Vel Flow Froude #
Sta Q Total El Elev W.S. Elev Left Chni Right Total Area xs
(m3/s) (m) (m) (m) (m) (m/s) (m/s) (m/s) (m/s) (m2)
348 1.07 13.88 14.38 14.16 14.38 0.35 0.35 3.03 12.16
308 1.07 12.03 12.32 12.32 12.4 1.2 1.2 0.9 6.09
274 1.38 10.8 12.03 11.13 12.03 0.02 0.1 0.03 0.09 14.68 24.13
252 1.38 9.97 12.03 10.15 12.03 0.02 0.04 0.02 0.03 42.62 37.07
234 1.38 9.26 12.03 9.52 12.03 0.01 0.02 0.01 0.02 75.49 48.85
220 Culvert
213 1.38 8.56 9.02 8.72 9.02 0.3 0.3 4.56 13.58
198 3.11 8.2 8.7 8.5 8.72 0.62 0.18 0.62 5.06 15.64
166 3.11 7.54 7.93 7.74 7.94 0.21 0.41 0.28 0.39 8.01 27.97
141 3.11 7.11 7.84 7.32 7.84 0.14 0.2 0.09 0.18 17.44 34.95
121 3.11 6.99 7.81 7.22 7.81 0.22 0.19 0.03 0.2 15.74 29.85
101 3.11 7 7.74 7.3 7.74 0.34 0.28 0.31 10.1 24.71
90 3.11 6.4 7.73 6.8 7.73 0.07 0.13 0.08 0.12 26.46 37.79
75 Culvert
60 5.18 6.07 7.6 6.32 7.6 0.08 0.14 0.1 0.13 40.71 37.87
B09182.W-02A
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