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NOT FOR CONSTRUCTION
W 1 2 76.0 NATURAL CONTOUR
RP133701 RP133701
76.0 DESIGN CONTOUR
W
PROPERTY BOUNDARY
EASEMENT BOUNDARY
S
1.5
3.0 EXISTING KERB
W
4.0 EXISTING STORMWATER LINES
2.0
5.0
2.5
9.5 5.5 EARTHWORKS DEPTHS (0.25m INCREMENTS)
9.0
S
CUT FILL
8.5
8.0
7.5
1% AEP FLOOD LINE
W
S
PRELIMINARY ONLY
0.5
21 22
WARD STREET
W
25m LONG x 14.5m 22.5m LONG x 14.5m
S
WIDE BUILDING PAD WIDE BUILDING PAD
LOT AREA ABOVE RL.2.5 - 600m2
1.5
4.0
4.5
W
5.0
3.5
1.0
4.5
3.5
S
NOOSA
2.0
3.0
9.0
6.0
3.0
7.0
W
4.0
2.5
S
6.5
2.0
5.0
RIVER
8.5
2.5
8.0
5.5
S
W
7.5
23
S
N
20
W
N 25m LONG x 14.5m 22.5m LONG x 14.5m
WIDE BUILDING PAD WIDE BUILDING PAD
N LOT AREA ABOVE RL.2.5 - 661m2
S
W
N WM
1.5
0.5
4.0
4.5
3.5
1.0
6.5
N
S
6.0
7.0
3.5
8.0 2.0
3.0
2.0
W
2.5
S
AREA TO BE REINSTATED BACK TO
73
ORIGINAL LEVELS (PRIOR TO TENNIS
W
RP28717 COURT CONSTRUCTION)
A B C D
C06 C06 C06 C06
W
EARTHWORKS: - CUT VOLUME = 0 m3 NOOSA COUNCIL
FILL VOLUME = 441 m3 0 4 8 12m
NOTES: -
REFERENCE DOCUMENT
1) STRIPPING NOT ALLOWED RAL24/0015 28 APRIL 2025 Scale 1:200 @A1
2) COMPACTION FACTORS NOT ALLOWED
Scale 1:400 @A3
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to M.P. B.D.
copyright in accordance with the A. BROCKEN Designed Verified
21 WARD STREET, TEWANTIN EARTHWORKS AS SHOWN A1
agreement between Tod
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
M.P. B.D. LAYOUT PLAN Drawing Number
used for this specific project. Approved
B. DOWNES
RPEQ No
14873
RDP: PARISH:
COUNTY:
24500 - C02
Noosa: 07 5449 9600 LOCAL AUTHORITY: NOOSA SHIRE COUNCIL
This drawing shall not be used B 11.03.25 SECTION LABELS ADDED MP PM: 27343
Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date MCU APPROVAL: 0 10 20 30 40 50 60 Sheet Revision
for construction until marked as PO Box 61, Noosaville, QLD 4566 VERT DATUM: RL.4.389
A 23.07.24 ISSUED FOR APPROVAL MP
'issued for construction' in the
revision description. Rev Date Revision Description Drawn
[email protected] www.todconsulting.com
ABN 39 128 805 336 11.03.25
ROL APPROVAL:
OPW APPROVAL: TBC MEASUREMENT BAR - INCREMENTS IN mm
2 of 6 B
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Page 2
NOT FOR CONSTRUCTION
W 1 2
RP133701 RP133701 LEGEND
PROPERTY BOUNDARY
W
EASEMENT BOUNDARY
S
1.5 76.0 NATURAL CONTOUR
3.0
76.0 DESIGN CONTOUR
W
4.0
2.0
5.0
2.5
9.5 5.5 EXISTING BITUMEN EDGE
9.0
////
S
EXISTING KERB
8.5
8.0
7.5
SW SW EXISTING STORMWATER LINES
W
CONTROL LINE
S
PRELIMINARY ONLY
0.5
KERB AND CHANNEL
21 22 PROPOSED STORMWATER
WARD STREET
W
640m3 920m3
PROPOSED FIELD INLET
S
PROPOSED HEADWALL
3.0m WIDE DRIVEWAY
1.5
4.0
4.5
1% AEP FLOOD LINE
W
5.0
3.5
1.0
4.5
3.5
S
NOOSA
2.0
3.0
9.0
6.0
3.0
7.0
W
4.0
2.5
S
SALTWATER CLASS PIPE
6.5
2.0
5.0
RIVER
0.75
8.5
2.5
8.0
5.5
S
W
7.5
23
S
20
W
640m3 966m3
S
W
WM
1.5
0.5
4.0
4.5
3.5
1.0
6.5
S
6.0
7.0
3.5
8.0 2.0
2.0
W
3.0
2.5
S
73
W
RP28717
W
NOOSA COUNCIL
REFERENCE DOCUMENT 0 4 8 12m
RAL24/0015 28 APRIL 2025 Scale 1:200 @A1
Scale 1:400 @A3
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to M.P. B.D.
copyright in accordance with the A. BROCKEN Designed Verified
21 WARD STREET, TEWANTIN ROADWORKS AND AS SHOWN A1
agreement between Tod
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
M.P. B.D. STORMWATER LAYOUT Drawing Number
used for this specific project. Approved
B. DOWNES
RPEQ No
14873
RDP: PARISH:
COUNTY:
PLAN 24500 - C03
Noosa: 07 5449 9600 LOCAL AUTHORITY: NOOSA SHIRE COUNCIL
This drawing shall not be used PM: 27343
Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date MCU APPROVAL: 0 10 20 30 40 50 60 Sheet Revision
for construction until marked as PO Box 61, Noosaville, QLD 4566 VERT DATUM: RL.4.389
A xx.xx.xx ISSUED FOR APPROVAL MP
'issued for construction' in the
revision description. Rev Date Revision Description Drawn
[email protected] www.todconsulting.com
ABN 39 128 805 336 xx.xx.xx
ROL APPROVAL:
OPW APPROVAL: TBC MEASUREMENT BAR - INCREMENTS IN mm
3 of 5 A
Document Set ID: 23148187
Version: 1, Version Date: 30/07/2024
Page 3
NOT FOR CONSTRUCTION
1 2
RP133701 RP133701
IL.-0.610
LEGEND
PROPERTY BOUNDARY
S
1.5
3.0 EASEMENT BOUNDARY
4.0 FINISHED CONTOUR
2.0
76.0
5.0
2.5
9.5 5.5
9.0
EXISTING SEWER MAIN
S
S S
8.5
8.0
7.5
S S PROPOSED SEWER MAIN
PROPOSED SEWER MANHOLE
S
PRELIMINARY ONLY
0.5
21 22
WARD STREET
S
3.0m WIDE CONSTRUCT MANHOLE
1.5
EASEMENT OVER EXISTING SEWER
1.50
3.5
1.0
4.5
S
NOOSA
9.0
6.0
S S S S S S S S S S
3.0
7.0
4.0
S
6.5
2.0
5.0
RIVER
8.5
2.5
8.0
5.5
DN300 PVC-U
S
7.5
23
S
20
3.0m WIDE
EASEMENT
S
1.5
0.5
4.5
3.5
1.0
6.5
S
6.0
7.0
8.0 2.0
2.5
S
IL.-0.910
73
RP28717
NOOSA COUNCIL
REFERENCE DOCUMENT 0 4 8 12m
RAL24/0015 28 APRIL 2025 Scale 1:200 @A1
Scale 1:400 @A3
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to M.P. B.D.
copyright in accordance with the A. BROCKEN Designed Verified
21 WARD STREET, TEWANTIN SEWERAGE RETICULATION AS SHOWN A1
agreement between Tod
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
M.P. B.D. LAYOUT PLAN Drawing Number
used for this specific project. Approved
B. DOWNES
RPEQ No
14873
RDP: PARISH:
COUNTY:
24500 - C04
Noosa: 07 5449 9600 LOCAL AUTHORITY: NOOSA SHIRE COUNCIL
This drawing shall not be used PM: 27343
Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date MCU APPROVAL: 0 10 20 30 40 50 60 Sheet Revision
for construction until marked as PO Box 61, Noosaville, QLD 4566 VERT DATUM: RL.4.389
A xx.xx.xx ISSUED FOR APPROVAL MP
'issued for construction' in the
revision description. Rev Date Revision Description Drawn
[email protected] www.todconsulting.com
ABN 39 128 805 336 xx.xx.xx
ROL APPROVAL:
OPW APPROVAL: TBC MEASUREMENT BAR - INCREMENTS IN mm
4 of 5 A
Document Set ID: 23148187
Version: 1, Version Date: 30/07/2024
Page 4
NOT FOR CONSTRUCTION
W 1 2
RP133701 RP133701 LEGEND
PROPERTY BOUNDARY
W
EASEMENT BOUNDARY
W W EXISTING WATER MAIN
W
W W PROPOSED WATER MAIN
PROPOSED SERVICE CONDUIT
PROPERTY SERVICE
(LOT 21) PROPOSED METERED WATER SERVICE
W
PRELIMINARY ONLY
21 22
WARD STREET
W
DN100 AC
W
NOOSA
W
RIVER
W
PROPERTY SERVICES
(LOT 22 AND 23)
20 23
W
W
WM
EXISTING PROPERTY SERVICE TO
REMAIN TO SERVICE LOT 20
W
73
W
RP28717
W
NOOSA COUNCIL
0 4 8 12m
REFERENCE DOCUMENT
RAL24/0015 28 APRIL 2025 Scale 1:200 @A1
Scale 1:400 @A3
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to M.P. B.D.
copyright in accordance with the A. BROCKEN Designed Verified
21 WARD STREET, TEWANTIN WATER RETICULATION AS SHOWN A1
agreement between Tod
Consulting pty ltd (tc) and tc's
client. This drawing shall only be
M.P. B.D. LAYOUT PLAN Drawing Number
used for this specific project. Approved
B. DOWNES
RPEQ No
14873
RDP: PARISH:
COUNTY:
24500 - C05
Noosa: 07 5449 9600 LOCAL AUTHORITY: NOOSA SHIRE COUNCIL
This drawing shall not be used PM: 27343
Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date MCU APPROVAL: 0 10 20 30 40 50 60 Sheet Revision
for construction until marked as PO Box 61, Noosaville, QLD 4566 VERT DATUM: RL.4.389
A xx.xx.xx ISSUED FOR APPROVAL MP
'issued for construction' in the
revision description. Rev Date Revision Description Drawn
[email protected] www.todconsulting.com
ABN 39 128 805 336 xx.xx.xx
ROL APPROVAL:
OPW APPROVAL: TBC MEASUREMENT BAR - INCREMENTS IN mm
5 of 5 A
Document Set ID: 23148187
Version: 1, Version Date: 30/07/2024
Page 5
NOT FOR CONSTRUCTION
BDY
BDY
LOT 20 LOT 21
BDY
NATURAL SURFACE
PRELIMINARY ONLY
SECTION A
C02
BDY
BDY
BDY
LOT 23 LOT 22 DESIGN SURFACE
NATURAL SURFACE
SECTION B
C02
BDY
LOT 23
BDY
BDY
LOT 22
1.0
1 IN
2
NATURAL SURFACE
SECTION C
C02
LOT 23
BDY
LOT 22
BDY
BDY
DESIGN SURFACE
NATURAL SURFACE
SECTION D
C02
NOOSA COUNCIL
0 2 4 6m
REFERENCE DOCUMENT
RAL24/0015 28 APRIL 2025 Scale 1:100 @A1
Scale 1:200 @A3
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
This drawing is subject to M.P. B.D.
copyright in accordance with the A. BROCKEN Designed Verified
21 WARD STREET, TEWANTIN EARTHWORKS SECTIONS AS SHOWN A1
agreement between Tod
Consulting pty ltd (tc) and tc's M.P. B.D. Drawing Number
client. This drawing shall only be
used for this specific project. Approved
B. DOWNES
RPEQ No
14873
RDP: PARISH:
COUNTY:
24500 - C06
Noosa: 07 5449 9600 LOCAL AUTHORITY: NOOSA SHIRE COUNCIL
This drawing shall not be used PM: 27343
Sunshine Coast: 07 5329 3190 Mackay: 07 4840 2337
Signed Date MCU APPROVAL: 0 10 20 30 40 50 60 Sheet Revision
for construction until marked as PO Box 61, Noosaville, QLD 4566 VERT DATUM: RL.4.389
A 11.03.25 ISSUED FOR APPROVAL MP
'issued for construction' in the
revision description. Rev Date Revision Description Drawn
[email protected] www.todconsulting.com
ABN 39 128 805 336 11.03.25
ROL APPROVAL:
OPW APPROVAL: TBC MEASUREMENT BAR - INCREMENTS IN mm
6 of 6 A
Page 6
NOOSA COUNCIL
REFERENCE DOCUMENT
RAL24/0015 28 APRIL 2025
ADRIAN BROCKEN
21 Ward Street, Tewantin
Flood Impact Assessment
BNE00529_0001-REP-001-0
18 JULY 2024
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188
Version: 1, Version Date: 30/07/2024
Page 7
DISCLAIMER
This Report has been prepared on behalf of and for the exclusive use of Adrian Brocken and is subject to and issued in accordance with Adrian
Brocken instruction to Engeny Australia Pty Ltd (Engeny). The content of this Report was based on previous information and studies supplied
by Adrian Brocken.
Engeny accepts no liability or responsibility whatsoever for it in respect of any use of or reliance upon this Report by any third party. Copying
this Report without the permission of Adrian Brocken or Engeny is not permitted.
Rev Date Description Author Reviewer Project Mgr. Approver
0 18/07/2024 Client Issue Adeeba Ayaz Lewis Hamilton Lewis Hamilton Brendon Bolt
Signatures:
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 ii
Version: 1, Version Date: 30/07/2024
Page 8
CONTENTS
1. Introduction 1
1.1 Project Scope 1
1.2 Data, Supplied & Sourced Information 1
1.3 Guidelines, Design Standards and Reference Documents 1
1.4 Site Location and Features 1
1.5 Flood Hazard Overlay 2
2. Modelling methodology 4
2.1 Modelling Scenarios 5
3. Hydraulic Model Results 6
3.1 Cut-down model results and validation 6
3.2 Flood Results 6
3.3 Impact assessment 6
4. Conclusion 7
5. Qualifications 8
Appendices
Appendix A: Site Layout and Survey Plan 9
Appendix B: TUFLOW Model Setup and Validation 10
Appendix C: Hydraulic Model Results 11
Tables
Table 2.1: Key Modelling Parameters .................................................................................................................................................................. 4
Table 3.1: Estimated Flood Elevations ................................................................................................................................................................. 6
Table 3.2: Flood Impact Objectives ...................................................................................................................................................................... 6
Figures
Figure 1.1: Site Location and Aerial Imagery ....................................................................................................................................................... 2
Figure 1.2: Flood Hazard Overlay ......................................................................................................................................................................... 3
Figure 2.1: Existing Site Conditions ...................................................................................................................................................................... 5
Figure 2.2: Proposed Site Conditions – Reinstating to Pre-Existing ..................................................................................................................... 5
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 iii
Version: 1, Version Date: 30/07/2024
Page 9
1. INTRODUCTION
Engeny Australia Pty Ltd (Engeny) have been commissioned by Adrian Brocken to prepare a Flood Impact Assessment to support the proposed
earthworks and reconfiguration of lot at 21 Ward Street, Tewantin (herein referred to as the Site). The Site is located within the Noosa Shire
Council (NSC) Local Government Authority (LGA) area. This report provides details of the existing and proposed flooding and conditions and
an assessment of development impacts on flooding behaviour.
1.1 Project Scope
The project site at 21 Ward Street historically installed a tennis court at the rear of the site which involved the existing terrain being excavated
to create a level surface, with the intent to re-instate this area back to pre-existing / historical levels (i.e. before the excavation of the tennis
court was to occur. This flood assessment aims to quantify changes to flooding conditions resulting from the re-instate of this area to pre-
existing levels to ensure no off-site impacts or earthworks identify any adjustments required to the current design. The scope of works for
this assessment includes the following:
• Hydraulic Assessment:
– Utilise Noosa Urban hydraulic model to simulate existing flooding conditions for the 10%, 5%, 2%, 1% AEP and 1% (2100) AEP design
storm events based on current terrain (includes tennis court excavation).
– Update hydraulic model to simulate post development (i.e. pre-existing terrain) conditions for the above design storm events.
– Assess potential impacts created by the reinstatement of site back to pre-existing terrain levels.
A summary of the works proposed in relation to the re-instatement of pre-existing ground levels.
• Existing ground levels including the excavated area previously provided for the tennis court, which provides an area of 457m² for Lot 22
with an overall area of 873m² and an area of 505m² for Lot 23 with an overall area of 919m² as shown on Plan No. 6144AB; and
• Reinstatement of the existing natural ground levels providing for 553m² for Lot 22 and 615m² for Lot 23 (Plan No. 6144AE).
1.2 Data, Supplied & Sourced Information
In the preparation of this report, information was gathered from the following sources:
• NSC - Noosa Urban hydraulic (TUFLOW) model.
• Site survey and proposed plan of reconfiguration provided by MWA Surveys.
• Aerial Imagery obtained from QLD Globe and Nearmap (accessed July 2024).
1.3 Guidelines, Design Standards and Reference Documents
The guidelines, standards and codes considered during the assessment were as follows:
• The Noosa Plan 2020.
• Australian Rainfall and Runoff 2019 (ARR).
Reference documents relevant to this assessment are:
• Noosa River Flood Study Upgrade Report (WMAwater, 2017).
1.4 Site Location and Features
The Site is located at 21 Ward Street, Tewantin and is comprised of three allotments, formally described as Lots 74, 75, and 76 on RP28717.
The property is bounded by residential allotments to the north and south, Noosa River to the east and Ward Street to the west. The total
site area is 3,187 m2 with elevations ranging from 1.25 to 9.43 m AHD. The Site slopes from west (Ward St) to east at a gradient between 4%
and 10%, with a flat area in the eastern portion of the site previously intended to be used as a tennis court.
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 1
Version: 1, Version Date: 30/07/2024
Page 10
The Site is currently vacant, with a vehicle crossover to Ward Street, internal access driveway and shed. There is comprehensive grass
coverage with light-density vegetation interspersed throughout the Site. The area of interest for the Ward Street flood model extends from
the northern end of Tewantin along the Noosa River out to the mouth of the river at Noosa Heads, extending inland to the edge of the
catchment and south to the beginning of Lake Weyba. The site currently has 3 lots and 4th over tennis court at rear is proposed. The location
of the project site is detailed below in Figure 1.1, with the site layout plan and survey provided in Appendix A.
Figure 1.1: Site Location and Aerial Imagery
1.5 Flood Hazard Overlay
Ground levels within the site have been modified previously to construct a tennis court in the eastern portion of the site. It is proposed to
undertake earthworks to reinstate the historical ground levels within the site. The proposed earthworks area encroaches within the Flood
Hazard Overlay as defined by the Noosa Plan 2020.
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 2
Version: 1, Version Date: 30/07/2024
Page 11
Figure 1.2: Flood Hazard Overlay
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 3
Version: 1, Version Date: 30/07/2024
Page 12
2. MODELLING METHODOLOGY
The Noosa River WBNM hydrologic model and TUFLOW hydraulic model were reviewed and modified for use in this assessment. Key
hydraulic model details are provided in Table 2.1. Mapping of the model setup and validation is provided in Appendix B.
TABLE 2.1: KEY MODELLING PARAMETERS
Parameter Details Basis / Comments
Hydrologic Modelling Software WBNM Maintained from Noosa Urban model
Hydraulic Modelling Software TUFLOW 2023-03-AE_iSP HPC Modified from Build 2016-03-AA classic
Cell Size Reduced from 10.0 m in Noosa Urban
5.0 m
model
2016 LiDAR Survey
Detailed Site Survey
Topography
Proposed Order of priority
Proposed Earthworks DEM
Initial Water Levels - Maintained from Noosa Urban model
Roads 0.025
Rural Property 0.060
Urban property 0.120
Vegetation 0.090 Maintained from Noosa Urban model
Hydraulic Roughness
Water 0.030
Mangroves 0.120
Ocean 0.060
Estuary Inlet 0.040
Model Extent The Noosa Urban model extent from Tewantin to
Maintained from Noosa Urban Model
Noosa Heads
Upstream Boundary Conditions Noosa River and Lake Weyba
Maintained from Noosa Urban Model
Source Area Inflows Inflow hydrographs from WBNM
1% AEP + CC 72hr
1% AEP 72hr Maintained from Noosa Urban Model
Design Events 2% AEP 72hr Proposed works outside flood extent for
5% AEP 72hr events more frequent than 10% AEP
10% AEP 72hr
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 4
Version: 1, Version Date: 30/07/2024
Page 13
2.1 Modelling Scenarios
The flood model has been setup to represent the Existing and Developed scenarios for the site and are described below:
• Existing Scenario (002) – The Existing Scenario has been prepared to represent the existing flooding characteristics the influence the site.
The only change made from the supplied Noosa River Flood Model was to reduce the model gride size from 10 to 5m.
• Proposed Scenario (100) – The Proposed Scenario has been prepared to represent the proposed earthworks to re-instate the tennis court
area back to the pre-existing terrain (refer Figure 2.1 and Figure 2.2 for terrain comparison). This is the only change made between the
Existing and Proposed modelling Scenarios.
Figure 2.1: Existing Site Conditions
Figure 2.2: Proposed Site Conditions – Reinstating to Pre-Existing
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 5
Version: 1, Version Date: 30/07/2024
Page 14
3. HYDRAULIC MODEL RESULTS
3.1 Cut-down model results and validation
Verification results showing that the cut-down developed model accurately reproduces the Noosa Urban model flood behaviour for flood
levels for the 1% event within the area of interest and a sufficient area upstream and downstream of the study site are included. The results
demonstrate the model is appropriate for use in the assessment of flood study.
3.2 Flood Results
Flood elevations within the site have been extracted from the base case hydraulic model and are provided in Table 3.1. These levels should
be used as the basis of setting freeboard requirement for the development.
TABLE 3.1: ESTIMATED FLOOD ELEVATIONS
Flood Elevation
Frequency
(m AHD)
1% AEP + CC
2.47
1% AEP
1.80
2% AEP
1.60
5% AEP
1.20
10% AEP
1.14
Flow depths in the extent of the proposed works range from 0.1 to 1.1 m in the base case 1% (2100) AEP (defined flood event). As this
regional of the flood plain acts as a backwater area, flood velocities in relation to the site are very low (max. 0.005 m/s) in the defined flood
event.
Mapped outputs of the peak water surface elevation and depth, velocity for the Existing and Proposed Scenarios area provided in Appendix
C.
3.3 Impact assessment
The flood impact objectives adopted for this assessment are outlined in Table 3.2, which suitably demonstrates no off-site impacts.
TABLE 3.2: FLOOD IMPACT OBJECTIVES
Aspect of Flooding Impact Objective
Off-site flood level increase Flood level afflux of less than 0.01 m
Off-site flood velocity increase Change in flood velocity of less than 0.1 m/s
Mapping showing the flood level afflux and change in velocity are presented in Appendix C. Key observations are that there are no changes
to flood elevations or velocity outside the Site as a result of the proposed works.
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 6
Version: 1, Version Date: 30/07/2024
Page 15
4. CONCLUSION
Engeny Australia Pty Ltd (Engeny) has been engaged by Adrian Brocken to develop a Flood Impact Assessment for the proposed earthworks
at 21 Ward Street, Tewantin. This report provides details regarding the existing and developed flooding conditions.
Hydraulic modelling has been undertaken Existing and Proposed conditions of the Site utilising Noosa Shire Council’s Noosa Urban TUFLOW
model. The Proposed Scenario represents the reinstatement of grounds levels over the existing tennis court back to the pre-existing terrain,
that is before the tennis court was excavated.
The result of the hydraulic modelling demonstrates that no off-site flood impacts result from the proposed works and the objectives outlined
in Section 3.3 have been achieved.
Therefore, this flood impact assessment has highlighted that the proposed earthworks can be undertaken without resulting in any off-site
impacts.
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 7
Version: 1, Version Date: 30/07/2024
Page 16
5. QUALIFICATIONS
(a) In preparing this document, including all relevant calculation and modelling, Engeny Australia Pty Ltd (Engeny) has exercised the degree
of skill, care and diligence normally exercised by members of the engineering profession and has acted in accordance with accepted
practices of engineering principles.
(b) Engeny has used reasonable endeavours to inform itself of the parameters and requirements of the project and has taken reasonable
steps to ensure that the works and document is as accurate and comprehensive as possible given the information upon which it has
been based including information that may have been provided or obtained by any third party or external sources which has not been
independently verified.
(c) Engeny reserves the right to review and amend any aspect of the works performed including any opinions and recommendations from
the works included or referred to in the works if:
(i) Additional sources of information not presently available (for whatever reason) are provided or become known to Engeny; or
(ii) Engeny considers it prudent to revise any aspect of the works in light of any information which becomes known to it after the
date of submission.
(d) Engeny does not give any warranty nor accept any liability in relation to the completeness or accuracy of the works, which may be
inherently reliant upon the completeness and accuracy of the input data and the agreed scope of works. All limitations of liability shall
apply for the benefit of the employees, agents and representatives of Engeny to the same extent that they apply for the benefit of
Engeny.
(e) This document is for the use of the party to whom it is addressed and for no other persons. No responsibility is accepted to any third
party for the whole or part of the contents of this Report.
(f) If any claim or demand is made by any person against Engeny on the basis of detriment sustained or alleged to have been sustained as
a result of reliance upon the Report or information therein, Engeny will rely upon this provision as a defence to any such claim or
demand.
(g) This Report does not provide legal advice.
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 8
Version: 1, Version Date: 30/07/2024
Page 17
APPENDIX A: SITE LAYOUT AND
SURVEY PLAN
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 9
Version: 1, Version Date: 30/07/2024
Page 18
LINETYPE LEGEND
BANK BOTTOM
BANK TOP
BATTER
CROWN
GUTTER
1 2 GRAVEL
RP177545 RP177545
BITUMEN
KERB MAX WATTERSON
CONCRETE
E ELECTRICAL
WATER
+ASSOCIATES
DAM/POOL
SEWER CONSULTING SURVEYORS
DRAINAGE & PLANNERS
TREELINE
GARDEN
1/11 Garnet Street
TELSTRA
BUILDING
PO Box 639
PAVING Cooroy Qld 4563
RETAINING WALL
WALL Ph. (07) 54426121
GUARDRAIL
Email. [email protected]
FENCE
BDY
1 2 MAJOR CONTOUR
MINOR CONTOUR
Client:
RP133701 RP133701
A. BROCKEN
2
4
3
STREET
Project:
PLAN OF NATURAL
5
6
SURFACE CONTOURS
9
8
7
36.08 49.62 Riv. WITHIN THE
PROPOSED
NOOS
(17.742)
21 22 RECONFIGURATION
(17.742)
OF LOTS 74, 75 & 76
640m² 920m² ON RP28717.
A
2.25 2.25
2.25 2.25
9 36.13
WARD
10.0
(54.35) Riv. LOCAL GOVT: NOOSA S.C.
RIVER
LOCALITY: TEWANTIN
23
(17.742)
20
(17.742)
Plan 1 of 1
Scale: 1: 400
640m² 966m² Datum: AHD
Date: 18-04-24
PM27343
Origin:
RL 4.389
Cont.Int: 0.25m
Ref:
8 36.13 55.25 Riv. 24-6144AE
5
4
7
6
3
NOTE:
2
This plan has been prepared for application
purposes only and may be subject to change.
73 Dimensions and areas shown hereon are
RP28717 approximate only and subject to final survey.
The Natural Surface Contours shown hereon
have been determined from available ground
levels on the subject land and the adjacent
Area of Lot 22 above RL 2.5m AHD = 600m² properties.
Area of Lot 23 above RL 2.5m AHD = 662m²
ADDENDUM 2: 20/5/24 West bdy of Lots 22 &
23 moved 2.65m west and Lot areas amended.
ADDENDUM 1: 9/5/24 Area of Lots 22 & 23
above RL 2.5m AHD added.
Document Set ID: 23148188
Version: 1, Version Date: 30/07/2024
Page 19
APPENDIX B: TUFLOW MODEL
SETUP AND VALIDATION
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 10
Version: 1, Version Date: 30/07/2024
Page 20
LEGEND
Boundary Conditions
WL Time
Inflow
1D Elements
Culvert
Pipe
Model Extent
Inflow Polygons
Site
Model Roughness
Roads (n=0.025)
Rural Property (n=0.060)
Urban Property (n=0.120)
Vegetation (n=0.090)
Water (n=0.030)
Ocean (n=0.060)
Estuary Inlet (n=0.040)
Document Set ID: 23148188
Version: 1, Version Date: 30/07/2024
Page 21
LEGEND
Boundary Conditions
WL Time
Inflow
1D Elements
Culvert
Pipe
Model Extent
Inflow Polygons
Site
Surface Elevation
-5.00 mAHD
3.75 mAHD
12.50 mAHD
21.25 mAHD
30.00 mAHD
Document Set ID: 23148188
Version: 1, Version Date: 30/07/2024
Page 22
LEGEND
Boundary Conditions
WL Time
Inflow
1D Elements
Culvert
Pipe
Model Extent
Inflow Polygons
Site
Afflux
<= -0.5
-0.5 - -0.3
-0.3 - -0.2
-0.2 - -0.1
-0.1 - -0.05
-0.05 - -0.025
-0.025 - 0.025
0.025 - 0.05
0.05 - 0.10
0.10 - 0.2
0.2 - 0.3
> 0.3
Document Set ID: 23148188
Version: 1, Version Date: 30/07/2024
Page 23
APPENDIX C: HYDRAULIC MODEL
RESULTS
Document21SetWARD STREET, TEWANTIN I BNE00529_0001-REP-001-0
ID: 23148188 11
Version: 1, Version Date: 30/07/2024
Page 24
DISCLAIMER
Engeny has endeavoured to ensure accuracy and
completeness of the data. Engeny assumes no legal
liability or responsibility for any decisions or actions
resulting from the information contained within this
map.
DATA SOURCE
SCALE @A3 - 1:1,500 QLD Government Open Data Source
GDA94 / MGA zone 56
LEGEND
(_] site
CJ Proposed Earthwork
Se —— Development Layout
—— Elevation Contours
|_| Cadastre
Gl 0.3-06m
()) o6-09m
[) 0.9-1.2m
(9) 1.2-1.5m
{| 1.5-1.8m
Gl 1.3-21m
| GG 2.1-24m
Wl 24-27m
Appendix c- 01
Adrian Brocken
21 Ward Street, Tewantin
1% AEP Event plus Climate Change (2100)
Existing (Left) & Proposed (Right)
Flood Depth & Elevation
00529_0001-MAP-01
Page 25
» ey
Existing
DETAILS DATE
17-07-2024
Set ID: 23148188
Versioninte:-Mersion-Datet-8 0/07/2024 arocken\6NE00529_0001 21 Ward Strest Tewantin FSI05 Design\QGISIWorkspaces\NE00529_0007-WOR-002-A-Flood Mapping aaz
© COPYRIGHT Engeny
This drawing is confidential and shall only be used for the purpose of this project.
DRAWN AB CHECKED H
APPROVED, eB DATE 17-07-2024
NoTEs:
SCALE @A3- 1:1,500
GDA94 / MGA zone 56
= Keo
Proposed
DISCLAIMER
Engeny has endeavoured to ensure accuracy and
completeness of the data. Engeny assumes no legal
liability or responsibility for any decisions or actions
resulting from the information contained within this
map.
snesmee ENGENY
QLD Government Open Data Source
LEGEND
(_] site
CJ Proposed Earthwork
—— Development Layout
— Elevation Contours
| _] Cadastre
Flood Depth (m)
<=0.3m
GH 0.3-06m
()) o6-09m
{[) 0.9-1.2m
(9) 1.2-1.5m
{| 1.5-1.8m
Gl 1.3-21m
( 2.1-2.4m
Wl 24-27m
Hi > 27m
Appendix C - 02
Adrian Brocken
21 Ward Street, Tewantin
1% AEP Event
Existing (Left) & Proposed (Right)
Flood Depth & Elevation
Barer
00529_0001-MAP-02
Page 26
urn
ma
/ i
Way
~<
Existing
DETAILS DATE
17-07-2024
nt Set ID: 23148188
Versioninte:-Mersion-Datet-8 0/07/2024 arocken\6NE00529_0001 21 Ward Strest Tewantin FSI05 Design\QGISIWorkspaces\NE00529_0007-WOR-002-A-Flood Mapping aaz
© COPYRIGHT Engeny
This drawing is confidential and shall only be used for the purpose of this project.
DRAWN AB CHECKED H
APPROVED, eB DATE 17-07-2024
Notes:
SCALE @A3- 1:1,500
GDA94 / MGA zone 56
a we Kiem
Proposed
DISCLAIMER
Engeny has endeavoured to ensure accuracy and
completeness of the data. Engeny assumes no legal
liability or responsibility for any decisions or actions
resulting from the information contained within this
map.
snesmee ENGENY
QLD Government Open Data Source
LEGEND
(_] site
CJ Proposed Earthwork
—— Development Layout
— Elevation Contours
| _] Cadastre
Flood Depth (m)
<=0.3m
Gl 0.3-06m
()) o6-09m
{[) 0.9-1.2m
(9) 1.2-1.5m
{| 1.5-1.8m
Gl 1.3-21m
( 2.1-2.4m
Wl 24-27m
Hi > 27m
Appendix C - 03
Adrian Brocken
21 Ward Street, Tewantin
2% AEP Event
Existing (Left) & Proposed (Right)
Flood Depth & Elevation
Barer
00529_0001-MAP-03
Page 27
Existing
DETAILS
Set ID: 23148188
DATE
17-07-2024
© COPYRIGHT Engeny
This drawing is confidential and shall only be used for the purpose of this project.
DRAWN AB CHECKED H
APPROVED, eB DATE 17-07-2024
NoTEs:
Versioninte:-Mersion-Datet-8 0/07/2024 arocken\6NE00529_0001 21 Ward Strest Tewantin FSI05 Design\QGISIWorkspaces\NE00529_0007-WOR-002-A-Flood Mapping aaz
SCALE @A3- 1:1,500
GDA94 / MGA zone 56
Proposed
DISCLAIMER
Engeny has endeavoured to ensure accuracy and
completeness of the data. Engeny assumes no legal
liability or responsibility for any decisions or actions
resulting from the information contained within this
map.
snesmee ENGENY
QLD Government Open Data Source
LEGEND
(—] site
CJ Proposed Earthwork
—— Development Layout
— Elevation Contours
| _] Cadastre
Flood Depth (m)
<=0.3m
Gl 0.3-06m
())) o6-09m
{[) 0.9-1.2m
(9) 1.2-1.5m
{| 1.5-1.8m
Gl 1.3-21m
( 2.1-2.4m
Wl 24-27m
Hi > 27m
Appendix C - 04
Adrian Brocken
21 Ward Street, Tewantin
5% AEP Event
Existing (Left) & Proposed (Right)
Flood Depth & Elevation
Barer
00529_0001-MAP-04
Page 28
LEGEND
C) site
CO Proposed Earthwork
—— Development Layout
— Elevation Contours
|_] Cadastre
Flood Depth (m)
<=0.3m
0.6-0.9m
oo - i I Cpe el { js i iz ss : z : a i a 7 I J I : | . ;
| | i i i [ 4 | ——— rh
| rk BS t . 1 | a AE : y : mm 24- 27m
Existing Tg Pa ; Be le’ Ess fe > 27
iA ki Z % a ke r % = ; ee ee f : :
ae copra rary DISCLAIMER
“This drawing is confidential and shall only be used for the purpose of this pro A ndix C -
completeness of the data. Engeny assumes no legal -
“=== [=| liability or responsibility for any decisions or actions Adrian Brocken
oh resulting from the information contained within this 21 Ward Street, Tewantin
ee vores Sent ecu
DATA SOURCE Flood Depth & Elevation
ee eee SCALE @A3- 1:1,500 ALD Government Open Data Source
= ‘Deg Ref.
pnt Set ID: 23148188, | GDA94 / MGA zone 56 00529_0001-MAP-05
105 Design\(QGiS\Wor 3NE00529_0001-WOR-002-A-Flood Mapping.qgz
Page 29
SC Existing R | DETAILS DATE © COPYRIGHT Engeny This drawing is confidential and shall only be used for the purpose of this project. o 17-07-2024 DRAWN CHECKED uy APPROVED DATE 17-07-2024 Notes: ument Set ID: 23148188 Versionsntis ersionDat]e30 40792004: brockeniG6NE00520_000% 21 Ward Stret Tewantin FSI05 Design|QGIS\Workspaces\NE00529_0001-WOR-002-A-Flood Mapping. agz oe Proposed DISCLAIMER Engeny has endeavoured to ensure accuracy and completeness of the data. Engeny assumes no legal liability or responsibility for any decisions or actions resulting from the information contained within this map DATA SOURCE SCALE @A3- 1:1,500 QLD Government Open Data Source GDA94 / MGA zone 56 ENGENY I —} i] LEGEND (_) site CJ Proposed Earthwork —— Development Layout Velocity Vectors |_| Cadastre Flood Velocity (m/s) Poe |) Ml <= 02 ms | i RE | | 0.2 - 0.4 m/s 0.4 - 0.6 m/s ] 0.6 - 0.8 m/s | BE > 0.8 ms fiat | Appendix C - 06 Adrian Brocken 21 Ward Street, Tewantin 1% AEP Event plus Climate Change (2100) Existing (Left) & Proposed (Right) Flood Velocity 00529_0001-MAP-06
Page 30
Loe Existing R | vetaus DATE © COPYRIGHT Engeny This drawing is confidential and shall only be used for the purpose of this project. o 17-07-2024 DRAWN CHECKED uy APPROVED DATE 17-07-2024 Notes: Document Set ID: 23148188 Versionsntis ersionDat]e30 40792004: brockeniG6NE00520_000% 21 Ward Stret Tewantin FSI05 Design|QGIS\Workspaces\NE00529_0001-WOR-002-A-Flood Mapping. agz SCALE @A3- 1:1,500 GDA94 / MGA zone 56 Koo Proposed DISCLAIMER Engeny has endeavoured to ensure accuracy and completeness of the data. Engeny assumes no legal liability or responsibility for any decisions or actions resulting from the information contained within this map. snesmee ENGENY QLD Government Open Data Source LEGEND (_) site CJ Proposed Earthwork —— Development Layout Velocity Vectors rox ir | Cadastre I Flood Velocity (m/s) &) GI <= 0.2 ms i re Le rt ||| | Gl 0.2-0.4 ms frre 0.4-0.6 mis a the] 0.6 - 0.8 m/s oe | : MB >osms oe Appendix C - 07 Adrian Brocken 21 Ward Street, Tewantin 1% AEP Event Existing (Left) & Proposed (Right) Flood Velocity 00529_0001-MAP-07
Page 31
a Re DATE 17-07-2024 ent Set ID: 23148188 This drawing is confidential and shall only APPROVED, N iss XN OS “ — ~ oo ~ ~ aw ow i i a =k i i i i i A Ss Ss “Ss XN ~N Nx a a aS \ Sl hob bY RE PEP PAS Sosrss i i i f i | ee 2 2 2 GE LE fib gp gb Bs Ais 1 of pe pp peP PP PEPAPPAS=SSaseeSeSQsS SN ea se ee Ap op pp pepe PPP PP PR esSseSaesaasey Ss & i i t t DISCLAIMER Engeny has endeavoured to ensure accuracy and completeness of the data. Engeny assumes no legal liability or responsibility for any decisions or actions resulting from the information contained within this map. DATA SOURCE SCALE @A3 - 1:1,500 QLD Government Open Data Source GDA94 / MGA zone 56 ts [appendixe-08 SSS eB ENGENY \ te ee ee ee Ve ee i ,. la 20 Oe BG | a a ee a a 2 fe ff bt ¢ fPss+ ss v = = = = = S =~ ~ KN LN A i bP PPPPRPPPA PAA 2S2SSeqnquesys's V 1 a A A A A ee ho f f # RG PR Be i i i 1 f fh PRP PPE PAB SSsSssSssSsSys ss i i LEGEND Site F Proposed Earthwork § —— Development Layout Velocity Vectors |_| Cadastre Flood Velocity (m/s) |] 0.4-0.6 m/s [] 0.6-0.8 ms Adrian Brocken 21 Ward Street, Tewantin 2% AEP Event Existing (Left) & Proposed (Right) Flood Velocity 529_0001-MAP-08
Page 32
Wang Existing R | DETAILS DATE o 17-07-2024 Document Set ID: 23148188 Versioni tips hereon Date OA02F 204» brockontaBN00520_0007 21 Ward Soot Towantn FS\05 bosigiQGIS Workspacos\BNE0OS2®_0001-WOR 002A Flood Mapping az ©COPYRIGHT Engeny This drawing is confidential and shall only be used for the purpose of this project. DRAWN CHECKED uy APPROVED DATE 17-07-2024 Notes: SCALE @A3- 1:1,500 GDA94 / MGA zone 56 “elise Proposed DISCLAIMER Engeny has endeavoured to ensure accuracy and completeness of the data. Engeny assumes no legal liability or responsibility for any decisions or actions resulting from the information contained within this map. snesmee ENGENY QLD Government Open Data Source LEGEND (_) site CJ Proposed Earthwork —— Development Layout Velocity Vectors |_| Cadastre | Flood Velocity (m/s) "] (| &) GI <= 0.2 ms | | Gl 0.2-0.4ms |) ] 04-06 ms || (I) 0.6- 0.8 ms r_yi| ME > 0.8 ms Appendix C - 09 Adrian Brocken 21 Ward Street, Tewantin 5% AEP Event Existing (Left) & Proposed (Right) Flood Velocity 00529_0001-MAP-09
Page 33
Wang
Existing
R | DETAILS DATE
o 17-07-2024
Document Set ID: 23148188
Versioni tips hereon Date OA02F 204» brockontaBN00520_0007 21 Ward Soot Towantn FS\05 bosigiQGIS Workspacos\BNE0OS2®_0001-WOR 002A Flood Mapping az
©COPYRIGHT Engeny
This drawing is confidential and shall only be used for the purpose of this project.
DRAWN CHECKED uy
APPROVED DATE 17-07-2024
Notes:
SCALE @A3- 1:1,500
GDA94 / MGA zone 56
“elise
Proposed
DISCLAIMER
Engeny has endeavoured to ensure accuracy and
completeness of the data. Engeny assumes no legal
liability or responsibility for any decisions or actions
resulting from the information contained within this
map.
snesmee ENGENY
QLD Government Open Data Source
LEGEND
(_) site
CJ Proposed Earthwork
—— Development Layout
Velocity Vectors
|_| Cadastre
| Flood Velocity (m/s)
"| (| a Gl <= 0.2 ms
[ [)) 0.2 - 0.4 ms
~ | {| 0.4 -0.6 ms
|| (I) 0.6- 0.8 ms
Appendix C - 10
Adrian Brocken
21 Ward Street, Tewantin
10% AEP Event
Existing (Left) & Proposed (Right)
Flood Velocity
00529_0001-MAP-10
Page 34
Flood Afflux
| [orms ome
This drawing is confidential and shall only be used for the purpose of this project.
re]
DRAWN,
APPROVED,
© CoPYRI
IGHT Engeny
oe lL |
| = | vores
SCALE @A3- 1:1,500
GDA94 / MGA zone 56
LEGEND
(—] site
| Proposed Earthwork
—— Development Layout
|_| Cadastre
Flood Afflux (m)
Ml <=-05
GM -0.5--03
Gl -0.3--0.2
{| -0.2--0.1
|| -0.1 - -0.05
[|] -0.05 - -0.01
{| -0.01 - 0.01
|| 0.01 - 0.05
[J 0.05 - 0.10
{0} Was wet now dry
(Was dry now wet
DISCLAIMER
Engeny has endeavoured to ensure accuracy and
completeness of the data. Engeny assumes no legal
liability or responsibility for any decisions or actions
resulting from the information contained within this
map.
DATA SOURCE
QLD Government Open Data Source
ENGENY
LEGEND
(C) site
CI Proposed Earthwork
—— Development Layout
|_| Cadastre
Difference in Flood Velocity(m/s)
Hl <=-05
HM -0.5--03
( -0.3 --0.2
{7} 0.2--0.1
| GS -0.1-0.1
0.3-0.5
| MM > os
|i se——| (EE Was wet now dry
Appendix C - 11
Adrian Brocken
21 Ward Street, Tewantin
1% AEP Event plus Climate Change (2100)
Flood Afflux (Left)
Flood Velocity Impact (Right)
Barer
00529_0001-MAP-11
Page 35
a
; Flood Afflux
; ffi
ce ronment egy
[rare | This drawing is confidential and shall only be used for the purpose of this project.
on [| oe lL |
wera
LEGEND
(—] site
| Proposed Earthwork
—— Development Layout
|_| Cadastre
Flood Afflux (m)
Ml <=-05
GM -0.5--03
Gl -0.3--0.2
{| -0.2--0.1
|| -0.1 - -0.05
[|] -0.05 - -0.01
{| -0.01 - 0.01
|| 0.01 - 0.05
[J 0.05 - 0.10
{0} Was wet now dry
(Was dry now wet
DISCLAIMER
Engeny has endeavoured to ensure accuracy and
completeness of the data. Engeny assumes no legal
liability or responsibility for any decisions or actions
resulting from the information contained within this
map.
DATA SOURCE
SCALE @A3 - 1:1,500 QLD Government Open Data Source
GDA94 / MGA zone 56
ENGENY
LEGEND
(C) site
CI Proposed Earthwork
—— Development Layout
|_| Cadastre
Difference in Flood Velocity(m/s)
Hl <=-05
HM -0.5--03
( -0.3 --0.2
{7 -0.2--0.1
(Hy -0.1 - 0.1
Appendix C -
Adrian Brocken
21 Ward Street, Tewantin
1% AEP Event
Flood Afflux (Left)
Flood Velocity Impact (Right)
Barer
00529_0001-MAP-12
Page 36
: 3
ae 4
, BA
&
; Hope Afflux
i
Pepe earn eon,
[rare | This drawing is confidential and shall only be used for the purpose of this project.
troranze
on [| oe lL |
wera
a
LEGEND
(—] site
| Proposed Earthwork
—— Development Layout
|_| Cadastre
Flood Afflux (m)
Ml <=-05
GM -0.5--03
Gl -0.3--0.2
{| -0.2--0.1
|| -0.1 - -0.05
[|] -0.05 - -0.01
{| -0.01 - 0.01
|__| 0.01 - 0.05
[J 0.05 - 0.10
{0} Was wet now dry
(Was dry now wet
DISCLAIMER
Engeny has endeavoured to ensure accuracy and
completeness of the data. Engeny assumes no legal
liability or responsibility for any decisions or actions
resulting from the information contained within this
map.
DATA SOURCE
SCALE @A3 - 1:1,500 QLD Government Open Data Source
GDA94 / MGA zone 56
ENGENY
LEGEND
(C) site
CI Proposed Earthwork
—— Development Layout
|_| Cadastre
Difference in Flood Velocity(m/s)
Hl <=-05
HB -0.5--03
( -0.3 --0.2
{7} 0.2 --0.1
(Hy -0.1 - 0.1
Appendix C - 13
Adrian Brocken
21 Ward Street, Tewantin
2% AEP Event
Flood Afflux (Left)
Flood Velocity Impact (Right)
Barer
00529_0001-MAP-13
Page 37
Food aff ee
8 ee
a
Eee
po
pnt Seti: 2014688 __ |__|
LEGEND
(—] site
| Proposed Earthwork
—— Development Layout
|_| Cadastre
Flood Afflux (m)
Ml <=-05
GM -0.5--03
( -0.3 --0.2
{| -0.2--0.1
|| -0.1 - -0.05
|] -0.05 - -0.01
{| -0.01 - 0.01
4) L__] 0.01 - 0.05
[J 0.05 - 0.10
{0} Was wet now dry
(Was dry now wet
DISCLAIMER
Engeny has endeavoured to ensure accuracy and
completeness of the data. Engeny assumes no legal
liability or responsibility for any decisions or actions
resulting from the information contained within this
map.
DATA SOURCE
SCALE @A3 - 1:1,500 QLD Government Open Data Source
GDA94 / MGA zone 56
ENGENY
LEGEND
(C) site
CI Proposed Earthwork
—— Development Layout
|_| Cadastre
Difference in Flood Velocity(m/s)
Wl <=-05
| | HB -0.5--03
| MM -03--02
{7} 0.2 --0.1
(Hy -0.1 - 0.1
Appendix c-14
Adrian Brocken
21 Ward Street, Tewantin
5% AEP Event
Flood Afflux (Left)
Flood Velocity Impact (Right)
Barer
00529_0001-MAP-14
Page 38
Food aff eh
8 ee
a
Eee
po
pnt Seti: 2014688 __ |__|
LEGEND
(—] site
| Proposed Earthwork
—— Development Layout
|_| Cadastre
Flood Afflux (m)
Ml <=-05
GM -0.5--03
( -0.3 --0.2
{| -0.2--0.1
|| -0.1 - -0.05
|] -0.05 - -0.01
{| -0.01 - 0.01
4) L__] 0.01 - 0.05
[J 0.05 - 0.10
{0} Was wet now dry
(Was dry now wet
DISCLAIMER
Engeny has endeavoured to ensure accuracy and
completeness of the data. Engeny assumes no legal
liability or responsibility for any decisions or actions
resulting from the information contained within this
map.
DATA SOURCE
SCALE @A3 - 1:1,500 QLD Government Open Data Source
GDA94 / MGA zone 56
ENGENY
LEGEND
(C) site
CI Proposed Earthwork
—— Development Layout
|_| Cadastre
Difference in Flood Velocity(m/s)
Wl <=-05
| | HB -0.5--03
| MM -03--02
{7} 0.2 --0.1
(Hy -0.1 - 0.1
Appendix Cc-15
Adrian Brocken
21 Ward Street, Tewantin
10% AEP Event
Flood Afflux (Left)
Flood Velocity Impact (Right)
Barer
00529_0001-MAP-15