FIGURE1 STUDY AREA STUDY
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C km 10 BurrillLake Brooman BatemansBay Broulee 5 Congo Mogo Mystery Bay Moruya Tomakin Tathra Monga Charleyong Cobargo Bega Brogo BelowraValley MajorsCreek Bimbaya Bemboka 2.5 Captains Flat Cowra Maclaughlin Sutton Queanbeyan RockFlat Chakola Catchment Area Catchment Creeks Michelago Cooma Canberra
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mxd J:\Jobs\114088\ArcView\ArcMaps\Figure01_Study_Area. FIGURE2 TERRAIN DATA
DIGITAL ELEVATION MODELELEVATION DIGITAL
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C km 1 CatchmentArea AvailableSurvey Data AvailableCross-sectional Data High : 479.613 Low : -3.819
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rvey.mxd J:\Jobs\114088\ArcView\ArcMaps\Figure02_ALS_Hydrosu km
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FIGURE3
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Bridge Locations
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e G Dunns CreekBridge Dunns CreekRd, Bridge BRIDGESTRUCTURES BeachRd, Candlagan Ck 0.25 Tomakin 0 0.5 1 1.5 2 Pde Sunpatch
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r e iv R a g a m o T Tomakin Rd, WoodenTomakin Bridge George Bass Dr, Tomaga River George Tomaga Bass Dr,
k George BassCandlagan Dr, Ck e e r Rd C akin Tom n a g
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u B PrincesMogo Hwy, Creek PrincesLynchCreek Hwy, PrincesJeremadra Hwy, Creek
Note: AdditionalNote: structuresnot shown have also been included in the model.
tures.mxd J:\Jobs\114088\ArcView\ArcMaps\Figure03_BridgeStruc FIGURE 4 $+$+ $+ HYDRAULIC MODEL STRUCTURES $+$+ $+$+ $+ $+ Mogo $+$+ Ca $+ $+$+ bbage $+$+ $+ Tree $+ $+ Creek $+ $+$+ $+ $+ $+$+$+ $+ $+ $+ $+ $+ $+ $+$+ $+ $+ $+ $+$+ $+ $+ $+ $+$+$+ $+$+$+ $+ $+ $+ $+ $+$+$+ $+$+ $+$+ $+ $+$+ $+$+$+ $+$+$+ $+ $+$+$+ $+ $+ $+$+ $+ $+$+ $+ $+ $+ k $+ $+ $+$+$+ $+ Mogo e $+ $+$+ e $+$+ $+ r $+ C $+ $+$+$+ $+ $+ $+ s $+ $+ $+ $+ $+$+$+$+$+$+$+ n $+ $+$+ $+ $+ $+ n $+$+ $+ $+ $+ $+ $+$+$+ u $+ $+ $+$+ $+$+ $+ $+ $+ $+$+ $+ M$+$+ D $+ $+$+ $+$+ $+$+$+$+ $+ $+$+$+$+$+$+ $+ $+ $+$+ $+$+$+$+ o $+$+ $+$+$+ g $+$+ $+$+ o $+ $+ $+ $+$+ C $+$+ $+ $+$+$+$+ r $+ $+$+$+$+ e Tomakin $+ e $+ $+ $+ $+ $+$+ k $+ $+ $+ $+$+ $+ $+$+ $+ $+$+$+ $+ $+$+ $+$+ $+$+$+$+Mossy Point $+ $+ $+$+$+ $+$+ $+ $+ $+ $+$+ $+ $+$+$+$+$+$+$+$+ $+$+ $+ $+ $+$+$+ k $+ $+ $+$+ $+$+ e $+$+$+ re $+ $+ $+ $+ C $+ $+ $+$+ $+ $+ $+ $+ ra $+ $+ $+ $+ $+$+$+$+$+$+$+$+ d $+$+$+ $+$+ $+ $+ $+$+$+$+ a $+ $+$+ $+$+ $+$+ $+ em $+$+$+ $+ $+ $+ r $+$+ $+$+$+$+$+ $+$+$+$+ $+ Je $+$+$+ $+ $+ $+$+ $+$+ $+ $+ $+ $+ $+ $+$+$+$+$+$+ $+$+ $+ $+$+$+$+ $+ $+$+ $+$+$+ $+ $+ $+$+$+$+ $+ $+$+ $+$+ $+$+$+$+ $+ $+ $+$+
$+ Broulee $+ $+ To $+$+$+$+ $+ m ag $+$+$+ $+$+ $+ a $+ R $+ $+$+ $+ $+ iv $+ $+$+ $+$+ $+ er $+ $+$+ $+$+ $+ $+ $+$+$+$+$+ $+$+ $+$+ $+$+ $+ $+ $+$+ $+ $+ $+ $+$+ $+ $+ $+ $+ $+ $+ $+$+ $+$+$+$+ $+ $+ $+ C $+$+ $+ $+ $+ $+ $+ $+ a $+ $+ $+$+ $+$+ $+$+$+$+ $+ $+$+ n $+ $+ $+ ures.mxd $+$+ d $+ $+ $+$+ $+ la $+ $+$+ $+$+$+$+ $+$+ $+ $+ g $+ $+$+$+$+$+$+$+$+ $+$+ $+$+$+ $+ an $+ $+ $+ $+ $+$+$+ C $+ $+$+ Tomakin r $+$+$+ $+$+$+$+$+ ee $+$+ $+ k $+$+ $+ $+$+ $+ $+$+ $+ $+$+ $+ $+ $+ $+ $+ $+ $+ $+$+$+ $+ $+$+ $+ $+ $+$+ $+ $+ $+ $+ $+ $+ $+$+$+ $+$+$+ $+$+$+ $+ $+$+$+ $+$+$+$+$+$+ $+$+$+$+Mossy Point $+ $+ ´ $+ $+$+$+$+$+$+$+ $+ $+$+$+$+ $+ $+$+ $+$+$+ $+$+ $+ $+ $+$+ Lynch Creek $+ $+ $+$+$+ $+$+$+$+$+$+ $+$+$+ $+$+ $+$+ $+$+ $+$+$+ $+$+$+$+$+ $+$+ $+$+ $+$+ Hydraulic Model Extent $+ $+$+$+$+ $+$+$+$+ $+$+ $+$+$+$+ $+$+ $+ $+$+$+$+ Bridges $+ $+$+$+$+$+$+ $+$+$+$+$+ $+$+$+ $+$+$+$+ $+ Culverts Broulee $+$+$+$+ Pipes $+$+$+$+ $+ $+ $+$+$+$+ $+ $+$+$+$+ $+$+ Pits $+$+$+ $+$+$+ $+ $+$+$+$+ $+ $+ $+$+$+$+$+$+$+$+ $+$+$+$+ $+$+ $+$+$+$+$+$+ $+$+$+ Roads $+$+$+ $+ $+ $+ $+ $+ $+$+$+ $+$+$+$+ $+ $+ $+$+ Creeks $+ $+ $+ $+$+$+ $+$+ $+$+ 01 2 4 6 km J:\Jobs\114088\ArcView\ArcMaps\Figure04_HydraulicModelStruct FIGURE 5 Nelligen (Thule Rd) GAUGE LOCATIONS 69023
Araluen Lower (Araluen Rd) 69127
Batemans Bay (Catalina Country Club) 69134
Batemans Bay - Buckenbowra 69052
Deep Creek Dam
Bettowynd (Nobbys Hill)
69035 Moruya (The Lagoon) 69042 Mogo
216455 Tomakin Mossy Point ons.mxd Broulee ´
Catchment Area Pluviometer Gauges
Daily Rainfall Gauges 69148 Moruya Airport AWS Moruya (Burra Creek) Deep Creek Dam Tipping Bucket 69033 Moruya Heads Pilot Station George Bass Drive Water Level 69018
02.5 5 10 Moruya (Kiora) 69142 km J:\Jobs\114088\ArcView\ArcMaps\Figure05_GaugeLocati m ´ FIGURE6 FloodMarks Properties Floodmarked HISTORICAL FLOOD MARKS 62Elizabeth Drive ELIZABETHDRIVE 1974 EVENT 50 34Elizabeth Drive 0 100 200 300 400
56Elizabeth Drive
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_1974FloodMarks.mxd J:\Jobs\114088\ArcView\ArcMaps\Figure06_ElizabethDr FIGURE7 HYDROLOGIC MODELLAYOUT
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odelLayout.mxd J:\Jobs\114088\ArcView\ArcMaps\Figure07_HydrologicM FIGURE8 HYDRAULIC MODEL ROUGHNESS
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C km 1 CatchmentArea DenseTrees: n=0.12 MediumTrees: n=0.07 Swamp: n=0.06 Grass/Clearing:n=0.04 Areas:Dirt n=0.03 Waterways:n=0.03 Roads:n=0.02
´ Hydraulic Roughness 0 2 4 6
delRoughness.mxd J:\Jobs\114088\ArcView\ArcMaps\Figure08_HydraulicMo
FIGURE9
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HYDRAULIC (TUFLOW)MODEL LAYOUT
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C km 1 Creeks DownstreamTailwater Hydraulic Model InflowLocations Hydraulic Routed Inflows TUFLOW 2.5mNested Grid Extent TUFLOW 10m Grid Extent Hydrologic Model Extent High : 225.227 Low : -6
´ Ground Level (mAHD) 0 2 4 6
delLayout.mxd J:\Jobs\114088\ArcView\ArcMaps\Figure09_HydraulicMo FIGURE 10 HYDRAULIC MODEL CALIBRATION TIDAL - DECEMBER 1998 EVENT J:\Jobs\114088\TUFLOW\results\B_Hist\Tables\Calibration_Tide_1998.xlsx STAGE HYDROGRAPH 1.2
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-0.8 Tide Level - Jervis Bay (216470) Water Level - George Bass Dr (216455) TUFLOW Modelled Level - George Bass Dr -1 22/12/1998 0:00 22/12/1998 12:00 23/12/1998 0:00 23/12/1998 12:00 24/12/1998 0:00 24/12/1998 12:00 25/12/1998 0:00 25/12/1998 12:00 Date and Time FIGURE 11 HYDRAULIC MODEL CALIBRATION TIDAL - MAY 2012 EVENT J:\Jobs\114088\TUFLOW\results\B_Hist\Tables\Calibration_Tide_2012.xlsx STAGE HYDROGRAPH 1.2
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-0.8 Tide Level - Jervis Bay (216470) Water Level - George Bass Dr (216455) TUFLOW Modelled Level - George Bass Dr -1 6/05/2012 0:00 6/05/2012 12:00 7/05/2012 0:00 7/05/2012 12:00 8/05/2012 0:00 8/05/2012 12:00 9/05/2012 0:00 Date and Time FIGURE 12 Nelligen (Thule Rd) HYDRAULIC MODEL CALIBRATION 69023 FEBRUARY 2010 EVENT RAINFALL DISTRIBUTION
Araluen Lower (Araluen Rd) 69127
Batemans Bay (Catalina Country Club) 69134
Batemans Bay - Buckenbowra 69052
Deep Creek Dam
Bettowynd (Nobbys Hill) 69035 Moruya (The Lagoon) 69042 Mogo ´
Catchment Area
Pluviometer Gauges 216455 Daily Rainfall Gauges Tomakin Mossy Point Deep Creek Dam Tipping Bucket
_Rainfall_2010_Distribution.mxd George Bass Drive Water Level Broulee Temporal Pattern Applied to Subcatchments Moruya Airport AWS Deep Creek Dam Rainfall Depth in mm (48hrs to 9am) 113 - 140 140 - 160 160 - 180
180 - 200 69148 Moruya Airport AWS Moruya (Burra Creek) 200 - 220 69033 Moruya Heads Pilot Station 220 - 232 69018
02.5 5 10 Moruya (Kiora) 69142 km J:\Jobs\114088\ArcView\ArcMaps\Figure12_Calibration FIGURE 13 HYDRAULIC MODEL CALIBRATION J:\Jobs\114088\TUFLOW\results\B_Hist\Tables\Calibration_Rainfall_2010.xlsx RAINFALL - FEBRUARY 2010 EVENT 14/02/2010 0:00 14/02/2010 12:00 15/02/2010 0:00 15/02/2010 12:00 16/02/2010 0:00 16/02/2010 12:00 STAGE17/02/2010 HYDROGRAPH 0:00 50 1.2 Pluviometer - Araluen Lower (69127) Pluviometer - Moruya Airport AWS (69148) Pluviometer - Deep Creek Dam 45 1 Tide Level - Jervis Bay (216470) Water Level - George Bass Dr (216455) TUFLOW Modelled Level - George Bass Dr 40 0.8
35 0.6
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25 0.2 WaterLevel (mAHD) Rainfall(mm per 15min) 20 0
15 -0.2
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14/02/2010 14/02/2010 0:00 14/02/2010 1:00 14/02/2010 2:00 14/02/2010 3:00 14/02/2010 4:00 14/02/2010 5:00 14/02/2010 6:00 14/02/2010 7:00 14/02/2010 8:00 14/02/2010 9:00 15/02/2010 0:00 15/02/2010 1:00 15/02/2010 2:00 15/02/2010 3:00 15/02/2010 4:00 15/02/2010 5:00 15/02/2010 6:00 15/02/2010 7:00 15/02/2010 8:00 15/02/2010 9:00 16/02/2010 0:00 16/02/2010 1:00 16/02/2010 2:00 16/02/2010 3:00 16/02/2010 4:00 16/02/2010 5:00 16/02/2010 6:00 16/02/2010 7:00 16/02/2010 8:00 16/02/2010 9:00 17/02/2010 0:00
14/02/2010 14/02/2010 10:00 14/02/2010 11:00 14/02/2010 12:00 14/02/2010 13:00 14/02/2010 14:00 14/02/2010 15:00 14/02/2010 16:00 14/02/2010 17:00 14/02/2010 18:00 14/02/2010 19:00 14/02/2010 20:00 14/02/2010 21:00 14/02/2010 22:00 14/02/2010 23:00 15/02/2010 10:00 15/02/2010 11:00 15/02/2010 12:00 15/02/2010 13:00 15/02/2010 14:00 15/02/2010 15:00 15/02/2010 16:00 15/02/2010 17:00 15/02/2010 18:00 15/02/2010 19:00 15/02/2010 20:00 15/02/2010 21:00 15/02/2010 22:00 15/02/2010 23:00 16/02/2010 10:00 16/02/2010 11:00 16/02/2010 12:00 16/02/2010 13:00 16/02/2010 14:00 16/02/2010 15:00 16/02/2010 16:00 16/02/2010 17:00 16/02/2010 18:00 16/02/2010 19:00 16/02/2010 20:00 16/02/2010 21:00 16/02/2010 22:00 16/02/2010 23:00 Date and Time FIGURE 14 VERIFICATION 1% AEP1% EVENT
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FloodLevel Contours Depth(m) 0 2 4 6 ´
Depth_Level_100yARI_Event.mxd J:\Jobs\114088\ArcView\ArcMaps\Figure14_Peak_Flood_ FIGURE 15 RESULTS LAYOUT
C abbag e Tree Creek
k Mogo e e r C To m s ak n i n n Rd u Mogo ! D
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Profiles s
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Dunns Creek Candlagan Creek ! ! Mossy Point
Jeremadra Creek Mossy Point Lynch Creek Mogo Creek
Tomago River Broulee ! Hydrographs
Broulee !
1% AEP Extent
01 2 4 6 km J:\Jobs\114088\ArcView\ArcMaps\Figure15_Results_Lay FIGURE 16A PEAK FLOOD LEVEL PROFILES J:\Jobs\114088\TUFLOW\results\D_Design\Profiles\Profiles_022.xlsx CANDLAGAN CREEK 8 Ground Elevation 0.2 EY Event 10% AEP Event 5% AEP Event 7 2% AEP Event 1% AEP Event 0.5% AEP Event PMF Event 6
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-1 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Chainage (m from Downstream Ocean Confluence) FIGURE 16B PEAK FLOOD LEVEL PROFILES J:\Jobs\114088\TUFLOW\results\D_Design\Profiles\Profiles_022.xlsx TOMAGO RIVER 8 Ground Elevation 0.2 EY Event 7 10% AEP Event 5% AEP Event 2% AEP Event
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-5 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Chainage (m from Downstream Ocean Confluence) FIGURE 16C PEAK FLOOD LEVEL PROFILES J:\Jobs\114088\TUFLOW\results\D_Design\Profiles\Profiles_022.xlsx JEREMADRA CREEK 16 Ground Elevation 15 0.2 EY Event 10% AEP Event 14 5% AEP Event 2% AEP Event 13 1% AEP Event 0.5% AEP Event 12 PMF Event
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15 0.2 EY Event 10% AEP Event 5% AEP Event 14 2% AEP Event 1% AEP Event 13 0.5% AEP Event PMF Event 12
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-1 0 5 10 15 20 25 30 35 40 Time (hrs) FIGURE 17B PEAK FLOOD LEVEL PROFILES J:\Jobs\114088\TUFLOW\results\D_Design\Hydrographs\Hydrographs_022.xlsx CANDLAGAN CREEK - GEORGE BASS DRIVE 6 0.2 EY Event 10% AEP Event 5% AEP Event 2% AEP Event 1% AEP Event 0.5% AEP Event 5 PMF Event
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0 0 5 10 15 20 25 30 35 40 Time (hrs) FIGURE 17C PEAK FLOOD LEVEL PROFILES J:\Jobs\114088\TUFLOW\results\D_Design\Hydrographs\Hydrographs_022.xlsx BROULEE - CRN OF ANGLE ST AND ELIZABETH DR 6 0.2 EY Event 10% AEP Event 5% AEP Event 2% AEP Event 1% AEP Event 0.5% AEP Event PMF Event
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Flood LevelFlood(mAHD)
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3 0 5 10 15 20 25 30 35 40 Time (hrs) FIGURE 17D PEAK FLOOD LEVEL PROFILES J:\Jobs\114088\TUFLOW\results\D_Design\Hydrographs\Hydrographs_022.xlsx MOSSY POINT - CONNELLS CL 6 0.2 EY Event 10% AEP Event 5% AEP Event 2% AEP Event 1% AEP Event 0.5% AEP Event 5 PMF Event
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0 0 5 10 15 20 25 30 35 40 Time (hrs) FIGURE 17E PEAK FLOOD LEVEL PROFILES J:\Jobs\114088\TUFLOW\results\D_Design\Hydrographs\Hydrographs_022.xlsx MOGO CREEK - UPSTREAM OF PRINCES HWY 11 0.2 EY Event 10% AEP Event 5% AEP Event 2% AEP Event
10 1% AEP Event 0.5% AEP Event PMF Event
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