About the EIS
The Warragamba Dam Raising Environmental Impact Statement is on public exhibition from the 29th of September to the 19th of December 2021. This display is an opportunity for the community to make comment on the environmental assessments for the proposed project.
The purpose of the EIS is to assess the economic, environmental and social impacts of the project and to help the community, government agencies and the approval authority make informed submissions or decisions on the merits of the project.
Environmental Assessment (EIS) Timeline
For information relating to the planning application and the exhibition of the EIS, including the notice of exhibition, full text of the EIS including appendices, the Planning Secretary's environmental assessment requirements and the SSI application, and how to have your say on the application, please visit the NSW Planning Portal.
These virtual sessions are held during public exhibition to provide the community and stakeholders with the opportunity to ask questions about the project’s Environmental Impact Statement. Register your interest in attending a webinar here.
|Webinar||Date and Time (all times in AEDT)|
|Webinar #1 (Registration Closed)||Tuesday 12th October 2021 - 12:00-1:30pm|
|Webinar #2 (Registration Closed)||Thursday 14th October 2021 - 6:00-7:30pm|
|Webinar #3 (Registration Closed)||Wednesday 20th October 2021 - 6:00-7:30pm|
|Webinar #4 (Registration Closed)||Wednesday 27th October 2021 - 12:00-1:30pm|
|Webinar #5 (Registration Closed)||Thursday 28th October 2021 - 6:00-7:30pm|
|Webinar #6 (Registration Closed)||Tuesday 2nd November 2021 - 10:00-11:30am|
|Webinar #7 (Registration Closed)||Wednesday 3rd November 2021 - 2:00-3:30pm|
|Webinar #8 (Registration Closed)||Thursday 18th November 2021 – 12:00-1:30pm|
|Webinar #9||Thursday 9th December 2021 – 12:00-1:30pm|
Focus Topic Videos
Chapter 1 – Introduction
This chapter provides a brief outline of the project including an introduction to the project location, scope and planning approval process. It outlines the Secretary’s Environmental Assessment Requirements (SEARs) and where they have been addressed in this Environmental Impact Statement (EIS).
Chapter 2 – Statutory and Planning Framework
This chapter describes the planning approval process for the project as well as other relevant environmental and statutory approval requirements.
Chapter 3 - Strategic Justification and Project Need
This chapter outlines the NSW strategic planning framework relevant to the project. It identifies the need for the project for reducing and managing the flood risk in the Hawkesbury-Nepean Valley and the project objectives. A statement of strategic need and justification concludes the section.
Chapter 4 - Project Development and Alternatives
This chapter describes the various alternatives to the project that were considered as part of its development process and explains how and why the project was selected as the preferred option in accordance with the Secretary's Environmental Assessment Requirements (SEARs). Design refinements for particular elements of the project are also addressed.
Chapter 5 - Project Description
This chapter provides a sufficiently detailed description of the project's components and activities, including of ancillary components and activities, required for its construction and operation.
Chapter 6 – Consultation
This chapter summarises the stakeholder and community consultation before and during the preparation of this Environmental Impact Statement (EIS). It includes details of consultation methods and the stakeholders consulted. The chapter also provides an overview of the key issues raised by stakeholders and the community and where relevant, how these concerns have been addressed through the design of the Warragamba Dam Raising and through the preparation of the EIS. Proposed future consultation is also outlined in the chapter.
Chapter 7 – Air Quality
This chapter provides an assessment of air quality impacts and risks during construction of the project and recommends measures to manage or mitigate these impacts.
Chapter 8 – Biodiversity Upstream
This chapter presents the findings of the biodiversity studies undertaken to assess the upstream impacts of an increase in temporary inundation from the operation of the Flood Mitigation Zone, including impacts on threatened plants, animals and ecosystems. The chapter presents the findings of these studies and identifies measures to manage, mitigate or offset impacts.
Chapter 9 - Downstream ecological assessment
This chapter presents the findings of the biodiversity studies undertaken to assess the downstream impacts from the changes in flooding regimes due to the project. It presents the impacts and proposes mitigation and offset measures.
Chapter 10 – Biodiversity - Construction Area
This chapter provides an assessment of biodiversity impacts from clearing and other indirect sources for the construction of the project. The chapter also details measures to offset, avoid or mitigate impacts.
Chapter 11 - Aquatic Ecology
This chapter presents an assessment of impacts to aquatic ecology from construction and operation of the project. This assessment includes consideration of impacts identified in other chapters which may also impact aquatic ecology, including potential changes to water quality, flood behaviour and geomorphology.
Chapter 12 - Matters of National Environmental Significance - Biodiversity
This section provides an assessment of impacts to Matters of National Environmental Significance (MNES) during construction and operation of the project.
Chapter 13 – Biodiversity Offset Strategy
This chapter details the proposed strategy to offset impacts from the construction and operation of the project. The strategy contains a comprehensive program of monitoring, land purchases, supplementary measures and funding to offset impacts on the threatened species, threatened ecosystems, National Parks and World Heritage areas.
Chapter 14 - Climate Change Risk
This chapter provides an assessment of the vulnerability of the project to potential impacts from climate change. It also details the features of the project that have been included to specifically address climate change impacts.
Chapter 15 - Flooding and Hydrology
This chapter describes flood modelling undertaken for the project and describes the changes in flood extents, durations, characteristics and impacts for a range of flood events including critical flood events. It assesses changes to the existing hydrological regimes both up and downstream of the dam.
Chapter 16 - Health and Safety
This chapter presents an assessment of potential human health impacts from the construction and operation of the project. Measures to manage and mitigate these impacts are proposed.
Chapter 17 - Non-Aboriginal Heritage
This chapter identifies non-Aboriginal heritage items that would be directly impacted by construction and indirectly impacted by the operation of the project. It assesses the potential impacts on these items and identifies appropriate management and mitigation measures to minimise impacts.
Chapter 18 - Aboriginal Cultural Heritage
This chapter describes the survey and other work undertaken to identify Aboriginal cultural heritage values and sites potentially impacted by the project. The chapter contains an assessment of potential direct and indirect impacts of the project, and proposes measures to avoid, manage, and mitigate potential impacts.
Chapter 19 - Noise and Vibration
This chapter predicts the noise and vibration impacts from construction of the project. It also details appropriate noise and vibration mitigation and management measures to minimise any impacts.
Chapter 20 – Protected and Sensitive Lands
This chapter identifies the areas of land affected by the project that are considered protected or sensitive under relevant legislation. It assesses the potential impacts to these areas and identifies measures to manage or mitigate these impacts.
Chapter 21 - Socio-economic, land use, and property
This chapter identifies the socio-economic impacts and benefits which may occur in local and regional communities as a result of the project. This include the benefits of flood mitigation on downstream communities, the potential impacts and opportunities for local communities and any socio-economic effects due to upstream impacts. Mitigation measures to minimise any negative impacts are also discussed.
Chapter 22 – Soils
This chapter describes the existing soil landscapes and characteristics in the study area and assesses any impacts during construction and operation of the project. This includes consideration of geomorphology impacts both up and downstream and identifies measures to manage or mitigate impacts.
Chapter 23 – Sustainability
This chapter provides an assessment of sustainability opportunities for the construction of the project in accordance with relevant tools and guidelines. It recommends measures to improve sustainability during construction and operation.
Chapter 24 - Transport and Traffic
This chapter provides an assessment of traffic and transport impacts on the local road network during construction of the project. It also assesses the benefits and the impacts of the project on downstream river crossings and evacuation routes. It identifies measures to manage or mitigate any impacts.
Chapter 25 - Visual Amenity
This chapter provides an assessment of visual impacts of the project at the dam and both upstream and downstream of the dam. The chapter also proposed mitigation and management measures to minimise any impacts.
Chapter 26 - Waste
This chapter provides an assessment of waste produced as a result of construction of the project. Measures to reduce, reuse, recycle and manage this waste are proposed in the chapter.
Chapter 27 - Water Quality
This chapter provides an assessment of water quality impacts during construction and operation of the project. This include assessing the potential risks to raw drinking water supplied by Warragamba Dam and the impacts downstream from the discharge of water from the Flood Mitigation Zone. Measures to manage or mitigate potential water quality impacts are proposed.
Chapter 28 - Cumulative Impacts and Interactions
This chapter provides an assessment of cumulative impacts of the proposed Warragamba Dam Raising as identified in the Secretary’s Environmental Assessment Requirements (SEARs).
Chapter 29 - EIS Synthesis, Project justification and Conclusion
This chapter provides a summary of the project including a description of activities that approval is being sought, unavoidable impacts, mitigation measures and an overall justification for the project based upon the technical assessments in the Environmental Impact Statement (EIS).