Waimea Community Dam

Details of the Waimea Community Dam project in the Lee Valley.

Home » My Council » Projects » Waimea Community Dam

Dam commissioned September 2024

An important milestone has been reached in the completion of the Waimea Community Dam project, with all consent, and Tasman Resource Management Plan (TRMP) requirements related to the dam’s commissioning now met. 

This means that from Monday 16 September, 2024, the dam is deemed fully operational, and we can begin to provide the anticipated benefits to urban and consented water users across the Waimea Plains. Read more here.

Background

The Waimea Community Dam is one of the region's most important infrastructure projects and the largest dam built in New Zealand for over 20 years.

The dam will:

  • secure the region's water supply for the next 100 years
  • improve water quality to provide a better environment for people, plants, fish and animals
  • strenthen the economy through the success of primary industries and the subsequent growth of associated secondary and tertiary industries
  • provide an estimated economic benefit to the Tasman region of $600-900m in the first 25 years.

Find out more about why we need a dam.

Visit the Waimea Water website(external link).

Explaining how the dam works to maintain water supply.

Find out why we need a dam and how we explored the alternatives.

Browse Waimea Community Dam project documents, including environmental and scientific reports, newsletters and representative reports, as well as historical material. 

Here are answers to some common questions about the Dam and the project