Environmental Impact Statement for raising Clarrie Hall Dam

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Have your say before EIS studies are completed

Tweed Shire Council is working to secure a long-term water supply for the growing shire and adapt to the impacts of climate change. Currently Council is able to meet demand for water until approximately 2026.

To service the needs of the community after 2026, Council resolved to undertake the planning and land acquisitions to raise Clarrie Hall Dam. This raising will treble the dam’s capacity and double its footprint, providing water security until at least 2046. This will also increase the supply’s resilience to climate change.

The Proposal is to increase the dam wall height by 8.5 metres (m) to provide a full supply level of 70 m Australian Height Datum (AHD) (RL70 m). It will increase the capacity of the dam from 16,000 megalitres (ML) to approximately 42,300 ML.

Raising the wall will:

  • 2 x dam’s footprint
  • 3 x dam’s capacity
  • Provide security of supply to 2046.

Seeking Government approval to progress

The Proposal is declared to be State Significant Infrastructure under the State Environmental Planning Policy (State and Regional Development) 2011. As such, to progress this Proposal and achieve Government approvals, an ENVIRONMENTAL IMPACT STATEMENT (EIS) is being prepared. The purpose of the EIS is to understand the extent of potential impacts of the Proposal and how these can be managed. It addresses the impacts of construction as well as the future operation of the dam.

The EIS will include many expert studies focused on subjects of importance to Tweed residents and the NSW Government. These studies will include assessments of dam safety, cultural heritage, biodiversity, flooding, water quality, hydrology, traffic and road safety, noise, air quality and others.

Review summary of the draft EIS studies - Read Draft EIS Summary document

Response to stakeholder feedback received to date: Stakeholder feedback has been integral to the development of the Proposal. This has directly influenced the proposed scope and the studies and activities undertaken by Council. These include:

  • Compensation for owners of property directly affected by inundation
  • Building a new, higher McCabe’s Bridge to maintain resident access to Commissioners Creek and the Crams Farm public recreational area of Clarrie Hall Dam.

Key EIS studies undertaken in response to community interests and feedback include: flooding, cultural heritage, road safety, social impact and biodiversity.


Environmental Impact Statement consultation has concluded


During late February to mid-March 2021 the EIS consultant undertook online community consultation in relation to progress findings from various EIS studies.

Thank you to stakeholders who provided comments and raised questions, and many others who reviewed the EIS summary and project fly-through.

The consultation has now closed and the feedback gathered will be included within the EIS report.

Future milestones include completion of the EIS, submission of the EIS to the NSW Government and Public Exhibition of the EIS.

Have your say before EIS studies are completed

Tweed Shire Council is working to secure a long-term water supply for the growing shire and adapt to the impacts of climate change. Currently Council is able to meet demand for water until approximately 2026.

To service the needs of the community after 2026, Council resolved to undertake the planning and land acquisitions to raise Clarrie Hall Dam. This raising will treble the dam’s capacity and double its footprint, providing water security until at least 2046. This will also increase the supply’s resilience to climate change.

The Proposal is to increase the dam wall height by 8.5 metres (m) to provide a full supply level of 70 m Australian Height Datum (AHD) (RL70 m). It will increase the capacity of the dam from 16,000 megalitres (ML) to approximately 42,300 ML.

Raising the wall will:

  • 2 x dam’s footprint
  • 3 x dam’s capacity
  • Provide security of supply to 2046.

Seeking Government approval to progress

The Proposal is declared to be State Significant Infrastructure under the State Environmental Planning Policy (State and Regional Development) 2011. As such, to progress this Proposal and achieve Government approvals, an ENVIRONMENTAL IMPACT STATEMENT (EIS) is being prepared. The purpose of the EIS is to understand the extent of potential impacts of the Proposal and how these can be managed. It addresses the impacts of construction as well as the future operation of the dam.

The EIS will include many expert studies focused on subjects of importance to Tweed residents and the NSW Government. These studies will include assessments of dam safety, cultural heritage, biodiversity, flooding, water quality, hydrology, traffic and road safety, noise, air quality and others.

Review summary of the draft EIS studies - Read Draft EIS Summary document

Response to stakeholder feedback received to date: Stakeholder feedback has been integral to the development of the Proposal. This has directly influenced the proposed scope and the studies and activities undertaken by Council. These include:

  • Compensation for owners of property directly affected by inundation
  • Building a new, higher McCabe’s Bridge to maintain resident access to Commissioners Creek and the Crams Farm public recreational area of Clarrie Hall Dam.

Key EIS studies undertaken in response to community interests and feedback include: flooding, cultural heritage, road safety, social impact and biodiversity.


Environmental Impact Statement consultation has concluded


During late February to mid-March 2021 the EIS consultant undertook online community consultation in relation to progress findings from various EIS studies.

Thank you to stakeholders who provided comments and raised questions, and many others who reviewed the EIS summary and project fly-through.

The consultation has now closed and the feedback gathered will be included within the EIS report.

Future milestones include completion of the EIS, submission of the EIS to the NSW Government and Public Exhibition of the EIS.

  • CLOSED: This survey has concluded.

    Thank you for your interest in Council’s proposal to secure the Tweed’s water supply into the future by increasing the storage capacity of Clarrie Hall Dam. We invite you to complete the survey below after reading the Proposed Raising of Clarrie Hall Dam EIS Summary.

    Complete survey
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