DOCSLIB.ORG

Bardwell Creek 2D Flood Study Review

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Bardwell Creek 2D Flood Study Review BARDWELL CREEK 2D FLOOD STUDY REVIEW FINAL REPORT MARCH 2019 Level 2, 160 Clarence Street Sydney, NSW, 2000 Tel: (02) 9299 2855 Fax: (02) 9262 6208 Email: [email protected] Web: www.wmawater.com.au BARDWELL CREEK 2D FLOOD STUDY REVIEW FINAL REPORT MARCH 2019 Project Project Number Bardwell Creek 2D Flood Study Review 118004 Client Client’s Representative Bayside Council Debbie Fransen Pulak Saha Authors Prepared by Ben Oakley Richard Dewar Rhys Hardwick Jones Date Verified by 1 March 2019 Revision Description Distribution Date 1 Draft Report Bayside Council 13 Sep 2018 2 Draft Report for Public Exhibition Bayside Council 2 Nov 2018 3 Final Draft Bayside Council 8 Feb 2019 4 Final Bayside Council 1 Mar 2019 BARDWELL CREEK 2D FLOOD STUDY REVIEW TABLE OF CONTENTS PAGE LIST OF ACRONYMS ................................................................................................................. i FOREWORD ............................................................................................................................... i EXECUTIVE SUMMARY ............................................................................................................ ii 1. INTRODUCTION ........................................................................................................ 1 2. BACKGROUND ......................................................................................................... 2 2.1. Study Area ................................................................................................................ 2 2.1.1. Bardwell Creek ................................................................................................ 3 2.1.2. Wolli Creek ...................................................................................................... 3 2.1.3. M5 Motorway East ........................................................................................... 3 2.1.4. East Hill Railway Noise Wall ............................................................................ 3 2.2. Historical Flooding .................................................................................................... 3 2.2.1. Notable Features in Bardwell Creek................................................................. 6 2.2.2. Notable Features in Wolli Creek ...................................................................... 6 2.3. Previous Studies ....................................................................................................... 7 2.3.1. Wolli Creek, Bardwell Creek and Bonnie Doon Flood Study ............................ 7 2.3.2. Southern Bardwell Creek Drainage Study ........................................................ 7 2.3.3. Northern Bardwell Creek Piped Drainage and Overland Flow Analysis ............ 8 2.3.4. Update of Wolli Creek Pipe Drainage and Overland Flow Study ...................... 8 2.3.5. Cooks River Flood Study ................................................................................. 8 2.3.6. Wolli Creek Flood Study .................................................................................. 9 2.3.7. Overland Flow Flood Study for Hurstville, Mortdale and Peakhurst Wards..... 10 2.4. Community Consultation ......................................................................................... 11 3. AVAILABLE DATA .................................................................................................. 13 3.1. Overview ................................................................................................................. 13 3.2. Data Sources .......................................................................................................... 13 3.3. Topographic Data ................................................................................................... 14 3.4. Hydraulic Structures ................................................................................................ 15 3.5. Cross-Section Survey ............................................................................................. 16 3.6. WestConnex Stage 2: New M5 ............................................................................... 16 3.7. Pit and Pipe Data .................................................................................................... 17 3.8. Lusty Street Detention Tank .................................................................................... 17 3.9. NSW Tidal Planes Analysis ..................................................................................... 17 3.10. Historical Flood Level Data ..................................................................................... 18 3.11. Historical Rainfall Data ............................................................................................ 23 3.11.1. Overview ................................................................................................. 23 3.11.2. Rainfall Stations ............................................................................................. 24 3.11.3. Analysis of Daily Rainfall Data ....................................................................... 25 3.11.4. Analysis of November 1984 Rainfall Event .................................................... 26 3.11.5. Analysis of December 1992 Rainfall Event .................................................... 26 3.11.6. Analysis of February 1993 Rainfall Event ...................................................... 27 3.11.7. Analysis of January 1996 Rainfall Event ........................................................ 27 3.11.8. Analysis of October 2014 Rainfall Event ........................................................ 28 3.12. Design Rainfall Data ............................................................................................... 29 4. MODELLING METHODOLOGY ............................................................................... 30 4.1. Overview ................................................................................................................. 30 4.2. Hydrologic Model .................................................................................................... 30 4.3. Hydraulic Model ...................................................................................................... 30 4.4. Flood Frequency Analysis ....................................................................................... 31 4.5. Historical Event Calibration and Validation .............................................................. 32 5. HYDROLOGIC MODEL SETUP ............................................................................... 33 5.1. Introduction ............................................................................................................. 33 5.2. Sub-catchment delineation...................................................................................... 33 5.3. Impervious Surface Area ........................................................................................ 33 5.4. Rainfall Losses and WBNM Lag Parameters .......................................................... 34 6. HYDRAULIC MODEL SETUP .................................................................................. 35 6.1. TUFLOW ................................................................................................................ 35 6.2. Boundary Locations ................................................................................................ 35 6.2.1. Inflows ........................................................................................................... 35 6.2.2. Downstream Boundaries ................................................................................ 35 6.3. Surface Roughness ................................................................................................ 36 6.4. Hydraulic Structures ................................................................................................ 37 6.4.1. Buildings ........................................................................................................ 37 6.4.2. Fencing and Obstructions .............................................................................. 37 6.4.3. Bridges and Culverts ..................................................................................... 37 6.4.4. Surface and Sub-Surface Drainage Network ................................................. 38 6.4.5. Inlet Pits ......................................................................................................... 38 6.4.6. Road Kerbs and Gutters ................................................................................ 38 6.4.7. Pedestrian Underpasses Underneath M5 ...................................................... 39 6.4.8. Gross Pollutant Trap (GPT) ........................................................................... 39 6.4.9. Turrella Weir and Footbridge ......................................................................... 39 6.4.10. Sewer Line (SWSOOS) ................................................................................. 39 6.4.11. Hillcrest Avenue – Levee and Pipes............................................................... 40 6.5. Calibration Debris Blockage Assumptions ............................................................... 40 7. MODEL CALIBRATION ........................................................................................... 42 7.1. Objectives ..............................................................................................................
Load more

Recommended publications
  • Sewage Treatment System Impact Monitoring Program
    Sewage Treatment System Impact Monitoring Program Volume 1 Data Report 2019-20 Commercial-in-Confidence Sydney Water 1 Smith Street, Parramatta, NSW Australia 2150 PO Box 399 Parramatta NSW 2124 Report version: STSIMP Data Report 2019-20 Volume 1 final © Sydney Water 2020 This work is copyright. It may be reproduced for study, research or training purposes subject to the inclusion of an acknowledgement of the source and no commercial usage or sale. Reproduction for purposes other than those listed requires permission from Sydney Water. Sewage Treatment System Impact Monitoring Program | Vol 1 Data Report 2019-20 Page | i Executive summary Background Sydney Water operates 23 wastewater treatment systems and each system has an Environment Protection Licence (EPL) regulated by the NSW Environment Protection Authority (EPA). Each EPL specifies the minimum performance standards and monitoring that is required. The Sewage Treatment System Impact Monitoring Program (STSIMP) commenced in 2008 to satisfy condition M5.1a of our EPLs. The results are reported to the NSW EPA every year. The STSIMP aims to monitor the environment within Sydney Water’s area of operations to determine general trends in water quality over time, monitor Sydney Water’s performance and to determine where Sydney Water’s contribution to water quality may pose a risk to environmental ecosystems and human health. The format and content of 2019-20 Data Report predominantly follows four earlier reports (2015-16 to 2018-19). Sydney Water’s overall approach to monitoring (design and method) is consistent with the Australian and New Zealand Environment and Conservation Council (ANZECC 2000 and ANZG 2018) guidelines.
    [Show full text]
  • Surface Water and Flooding
    Chapter 18 – Surface Water and Flooding 18 Surface water and flooding This chapter describes the potential surface water and flooding impacts associated with the project. The chapter has been informed by surface water and flooding assessments provided in Appendix L (Surface water technical report) and Appendix M (Flooding technical report). Table 18-1 sets out the SEARs relevant to surface water and flooding and identifies where the requirements have been addressed in this EIS. Table 18-1 SEARs - Surface water and flooding Assessment requirements Where addressed in this EIS Water - Hydrology 1. The Proponent must describe (and map) the existing hydrological regime for Section 18.2 discusses and maps any surface and groundwater resource (including reliance by users e.g. bore the existing surface water water for domestic use and irrigation, and for ecological purposes and hydrological regime groundwater dependent ecosystems) likely to be impacted by the project, Chapter 17 (Groundwater and including rivers, streams, wetlands and estuaries as described in Appendix 2 of geology) the Framework for Biodiversity Assessment – NSW Biodiversity Offsets Policy for Major Projects (OEH, 2014). Chapter 12 (Biodiversity) 2. The Proponent must prepare a detailed water balance for ground and surface Section 18.3.1 and Section 18.4.1 water including the proposed intake and discharge locations (including mapping discuss surface water balance of these locations), volume, frequency and duration for both the construction and Chapter 17 (Groundwater and operational
    [Show full text]
  • 4.2 TURRELLA to ALEXANDRA CANAL - REVIEW 2002 February - M5 East Cycleways Description Would Be Constructed As Part of the Future Development
    WESTCONNEX NEW M5 PEDESTRIAN & BICYCLE TRANSPORT NETWORK REVIEW 4.2 TURRELLA TO ALEXANDRA CANAL - REVIEW 2002 February - M5 East Cycleways Description would be constructed as part of the future development. This section did not get completed as part of the re-development hence the gap that still remains in An update on the progress on the M5 East Cycle way states the following: the present route. – A new shared 3 meter wide pedestrian and cycle path has been constructed – A shared path along Tempe Recreational Reserve included a cycle bridge over along both sides of the M5 East between King Georges Road and Bexley Road. the canal. This was not constructed. – The section of path along Alexandra Canal from Coward Street to Giovanni – The section between Princes Highway bridge and Turrella station was not Burnetti Bridge was constructed constructed due to the significant amount of redevelopment occuring. It was – The connection from Turrella Station to Giovanni Burnetti Bridge and Alexandra understood that the route from Princes Highway bridge and Turrella station Canal was not further planned due to the significant development proposed at would be constructed by future development. This did not occur. Wolli Creek Station and Turrella Station. It was considered that the cycleway Legend St Peters Station Proposed Route (not constructed) Completed Cycleway Sydney Park Princes Hwy Campbell Rd Sydenham Station Bourke Rd Canal Rd Unwins Bridge Rd Illawarra Rd Carrington Rd Cooks River IKEA Coward St Mascot Station Princes Hwy Tempe Bayview Ave Station
    [Show full text]
  • Chapter 16 Surface Water
    Transport for NSW/Sydney Airport Corporation Limited Sydney Gateway Road Project Environmental Impact Statement/ Major Development Plan Chapter 16 Surface water 2020 Environmental Impact Statement / Major Development Plan Contents 16. Surface water .................................................................................................................................... 16.1 16.1 Assessment approach ............................................................................................................. 16.1 16.2 Existing environment ............................................................................................................... 16.5 16.3 Assessment of construction impacts ..................................................................................... 16.12 16.4 Assessment of operation impacts .......................................................................................... 16.19 16.5 Cumulative impacts ............................................................................................................... 16.23 16.6 Management of impacts ........................................................................................................ 16.24 Tables Table 16.1 Pollutant reduction targets for Botany Bay catchment ........................................................ 16.5 Table 16.2 Existing annual pollutant loads ............................................................................................ 16.9 Table 16.3 Comparison of baseline water quality and default trigger values
    [Show full text]
  • FINAL-REPORT-Review-Of-Alligator-Weed-Priorities-In-The-Sydney
    Review of Priorities for the Control of Alligator Weed in the Sydney Region JANUARY 2015 Review of priorities for the control of Alligator Weed in the Sydney Region – January 2015 Background Alligator weed (Alternanthera philoxeroides) is a potentially devastating weed that grows in water and on land, affecting both waterways and floodplain areas. It is listed as a Weed of National Significance (WoNS). It is a native of South America and a major problem in south-eastern United States, China, New Zealand, Burma, Thailand, Indonesia and India. Alligator weed has not reached its potential distribution in Australia or within NSW, but has the ability to devastate the environment and agriculture if left unchecked. Alligator weed has extremely vigorous growth and great tolerance of normal control measures, which makes it a major threat to wetlands, rivers and irrigation systems. It is declared a noxious weed throughout NSW and is one of the highest priority weeds for detection and management in NSW. Alligator Weed Primefact: NSW DPI (2012) Alligator weed infestations are well established in the Sydney Region and if unmanaged pose high risks for further spread and/or ecological impact. The document entitled Priorities for the control of Alligator Weed in the Sydney Region was produced by the Sydney Weeds Committees in February 2010, and was the result of collaboration with the NSW Department of Primary Industries and weeds professionals throughout the Sydney Basin. The document identifies priority areas for the control of alligator weed and uses risks assessments to rank each area. The Sydney Region Weeds Action Project is a partnership between the NSW Government, local government and the Sydney Weeds Committees to reduce the impact of weeds across Sydney.
    [Show full text]
  • Noxious Trades Floods
    Noxious trades Pollution of waterways became a severe problem in the early settlement leading to noxious industries being outlawed from the population centre of Sydney Catchment by government regulation. In 1883, a Commission of Inquiry was set up to examine Sydney’s noxious trades. Wolli Creek farms were described as Wolli Creek and its tributary, Bardwell Creek, ‘the filthiest ever seen’ and strong reservations form the second largest sub-catchment of the expressed about the smell and noxious liquids Cooks River catchment covering 15.52 km2. draining into Wolli Creek. Looking at the creek today, it is hard to Diseases such as typhoid and gastro-enteritis were imagine that, in the late 1800s, it was one of common amongst residents living along waterways. the most polluted waterways in Sydney. Local resident, John Curtis, stated ‘there is no doubt that Wolli Creek is filled up, compared with what it was twenty-five or thirty years ago. At that time an old resident living next to my place [at the junction of Bardwell Creek] used to go in his boat down the creek, but at the present time I could walk across Wolli Creek in many places, even after rain...’ Water flowing through the Wolli Creek Valley contains the run-off from all the industrial and residential developments in the whole of the catchment before it flows into the Cooks River at Tempe. This has a major MISTAKES OF THE PAS impact on the water quality in Wolli Creek. In 1838, the government built a sandstone dam across Cooks River at Tempe to provide fresh water for In the past, building of dams, clearing of natural farmers on the lower Cooks River.
    [Show full text]
  • District Sydney Green Grid
    DISTRICT SYDNEY GREEN GRID SPATIAL FRAMEWORK AND PROJECT OPPORTUNITIES 145 TYRRELLSTUDIO PREFACE Open space is one of Sydney’s greatest assets. Our national parks, harbour, beaches, coastal walks, waterfront promenades, rivers, playgrounds and reserves are integral to the character and life of the city. In this report the hydrological, recreational and ecological fragments of the city are mapped and then pulled together into a proposition for a cohesive green infrastructure network for greater Sydney. This report builds on investigations undertaken by the Office of the Government Architect for the Department of Planning and Environment in the development of District Plans. It interrogates the vision and objectives of the Sydney Green Grid and uses a combination of GIS data mapping and consultation to develop an overview of the green infrastructure needs and character of each district. FINAL REPORT 23.03.17 Each district is analysed for its spatial qualities, open space, PREPARED BY waterways, its context and key natural features. This data informs a series of strategic opportunities for building the Sydney Green Grid within each district. Green Grid project opportunities have TYRRELLSTUDIO been identified and preliminary prioritisation has been informed by a comprehensive consultation process with stakeholders, including ABN. 97167623216 landowners and state and local government agencies. MARK TYRRELL M. 0410 928 926 This report is one step in an ongoing process. It provides preliminary E. [email protected] prioritisation of Green Grid opportunities in terms of their strategic W. WWW.TYRRELLSTUDIO.COM potential as catalysts for the establishment of a new interconnected high performance green infrastructure network which will support healthy PREPARED FOR urban growth.
    [Show full text]
  • Georges River Coastal Management Program Scoping Study
    FINAL REPORT: Georges River Coastal Management Program Scoping Study December 2020 Document history Revision: Revision no. 02 Author/s M. Rosenthal M. Sano Checked M. Sano E. Zavadil Approved E. Zavadil Distribution: Revision no. 01a Issue date 18 May 2020 Issued to Peter Ryan (Georges Riverkeeper) Description: Draft for comment Revision no. 02 Issue date 4 December 2020 Issued to Peter Ryan (Georges Riverkeeper) Description: Final Report Citation: Please cite as: Alluvium (2020). Georges River Coastal Management Program Scoping Study. Report by Alluvium for Georges Riverkeeper. December 2020. Acknowledgement: Alluvium acknowledges the Traditional Owners and custodians of the lands on which we work. The sites assessed are on the lands of the Dharug and Dharawal People, and we acknowledge them as Traditional Owners. We pay our respects to their elders, and the elders of all Aboriginal and Torres Strait Islander Peoples, past, present, and into the future. Contents 1 Introduction 1 1.1 Scoping study purpose 1 1.2 Study area 1 1.3 Report structure 6 2 Program context 7 2.1 NSW Coastal Management Framework 7 2.2 Coastal Management Programs 8 3 Strategic context 11 3.1 Physical setting 12 3.1.1 Landscape context, geology and soils 12 3.1.2 Coastal processes, sediment supply and transport 14 3.1.3 Coastal hazards 17 3.1.4 Shoreline management 20 3.2 Hydrology and hydrodynamics 24 3.2.1 Catchment hydrology 24 3.2.2 Groundwater 24 3.2.3 Hydrodynamics 25 3.2.4 Tides 26 3.2.5 Flooding 26 3.3 Climate 27 3.3.1 Current climate 27 3.3.2 Past observations
    [Show full text]
  • Annual Report
    Cooks River Alliance Annual Report Ashfield Bankstown Canterbury City of Sydney Hurstville Marrickville Rockdale Strathfield Contents About this Report ...................................................................................................................................... 4 About the Cooks River.............................................................................................................................. 5 Councils working together to achieve regional improvements............................................................. 6 About the Cooks River Alliance ................................................................................................................ 7 How the Alliance Operates ....................................................................................................................... 9 Alliance Board ....................................................................................................................................... 9 Alliance Staff........................................................................................................................................ 10 Alliance Working Group ...................................................................................................................... 10 Alliance Executive Committee ............................................................................................................ 10 Resourcing .........................................................................................................................................
    [Show full text]
  • F6 Extension Stage 1 EIS Volume 2A
    Chapter 12 – Biodiversity 12 Biodiversity This chapter provides a summary of the biodiversity impacts associated with the project and outlines how the desired performance outcomes for biodiversity have been met. A detailed biodiversity development assessment report (BDAR) has been prepared for the project and is included in Appendix H (Biodiversity development assessment report). Table 12-1 sets out the assessment requirements as provided in the SEARs relevant to biodiversity and where the requirements have been addressed in this EIS. Table 12-1 SEARs – Biodiversity Assessment requirements Where addressed Environmental Impact Assessment Process 2. It is the Proponent’s responsibility to determine whether the An assessment of the project’s impact on matters of project needs to be referred to the Commonwealth Department national environmental significance is included in section of the Environment and Energy for an approval under the 12.3 and section 12.4. Commonwealth Environment Protection and Biodiversity A referral to the Australian Government Department of the Conservation Act (EPBC Act). Environment and Energy for an approval under the EPBC Act is not required for the project. The assessment process and determination that the project does not need to be referred to the Australian Government Department of the Environment and Energy is included in Chapter 2 (Assessment process). Biodiversity 1. Biodiversity impacts related to the proposal are to be The biodiversity assessment was undertaken in assessed in accordance with the Biodiversity Assessment accordance with the Biodiversity Assessment Method and Method and documented in a Biodiversity Development documented in a Biodiversity Development Assessment Assessment Report (BDAR). Report (BDAR) (refer to Appendix H (Biodiversity development assessment report).
    [Show full text]
  • Groundwater Part 6
    Annexure H – Groundwater modelling report – HydroSimulations WestConnex – M4-M5 Link Roads and Maritime Services Technical working paper: Groundwater WESTCONNEX M4-M5 LINK Groundwater Modelling Report FOR AECOM Pty Ltd BY C. Turvey, W.Minchin and Dr N.P. Merrick NPM Technical Pty Ltd trading as HydroSimulations Project number: AEC003 Report: HS2017/01 Date: August 2017 TABLE OF CONTENTS 1 Introduction ............................................................................................... 1 1.1 Scope of Work ............................................................................................................ 3 1.2 Groundwater Management Area ................................................................................ 4 1.2.1 Groundwater Productivity ...................................................................................... 6 1.3 Requirements for the EIS ........................................................................................... 6 2 Background to WestConnex and M4-M5 Link Project ............................ 7 2.1 WestConnex Program of Works ................................................................................. 7 2.2 M4-M5 Link and Iron Cove Link ................................................................................. 9 2.2.1 design evolution of the M4-M5 Link Project ........................................................ 12 2.3 M4 East and New M5 Projects ................................................................................. 17 3 Hydrogeological Conceptual
    [Show full text]
  • Sydney Green Grid 5
    DISTRICT SYDNEY GREEN GRID SPATIAL FRAMEWORK AND PROJECT OPPORTUNITIES 145 TYRRELLSTUDIO PREFACE Open space is one of Sydney’s greatest assets. Our national parks, harbour, beaches, coastal walks, waterfront promenades, rivers, playgrounds and reserves are integral to the character and life of the city. In this report the hydrological, recreational and ecological fragments of the city are mapped and then pulled together into a proposition for a cohesive green infrastructure network for greater Sydney. This report builds on investigations undertaken by the Office of the Government Architect for the Department of Planning and Environment in the development of District Plans. It interrogates the vision and objectives of the Sydney Green Grid and uses a combination of GIS data mapping and consultation to develop an overview of the green infrastructure needs and character of each district. FINAL REPORT 23.03.17 Each district is analysed for its spatial qualities, open space, PREPARED BY waterways, its context and key natural features. This data informs a series of strategic opportunities for building the Sydney Green Grid within each district. Green Grid project opportunities have TYRRELLSTUDIO been identified and preliminary prioritisation has been informed by a comprehensive consultation process with stakeholders, including ABN. 97167623216 landowners and state and local government agencies. MARK TYRRELL M. 0410 928 926 This report is one step in an ongoing process. It provides preliminary E. [email protected] prioritisation of Green Grid opportunities in terms of their strategic W. WWW.TYRRELLSTUDIO.COM potential as catalysts for the establishment of a new interconnected high performance green infrastructure network which will support healthy PREPARED FOR urban growth.
    [Show full text]