Myalup–Wellington: Water for Growth

Key achievements:  

  • A $396 million project funded by the State and Commonwealth governments and Collie Water, who will invest $169 million.
  • Collie Water will be seeking approvals for the river diversion pumps and pipework, and has started procurement to construct the desalination plant.
  • DWER has developed a groundwater model for the Myalup region to guide future water allocation decisions.
  • DPIRD has met regularly with the Myalup Coast Growers committee, the local groundwater licensee body,in the Myalup Irrigated Agricultural Precinct to coordinate local engagement.

Project Overview

The Myalup Wellington Project is an industry-led initiative, proposed by Collie Water, to reduce salinity in Wellington Dam – Western Australia’s second largest reservoir.

It is a significant economic development project involving private proponent Collie Water, the State Government and the Commonwealth. This project will increase production capacity, expand irrigated agriculture and create jobs and economic growth in the Collie River Irrigation District (CRID) and Myalup Irrigated Agricultural Precinct (MIAP).

It is proposed that the most highly saline flows into the Wellington Dam be drawn from the Collie River East Branch and pumped to a mine void, with that water then treated in a new desalination plant located near Collie. A new, smaller Burekup Weir is proposed to be built upstream to enable water delivery in the CRID to be powered by gravity.

Increased revegetation of cleared land in the Wellington Dam catchment, through establishment of pine plantations, will assist in reducing saline run off into the Collie River that feeds into the Dam.

The water will support improved agricultural production downstream as well as in other industries that can be serviced from the improved water supply.

Key Themes

  • Collie Water is a WA based water company and project proponent managing the solution of reducing the salinity levels in the Wellington Dam.
  • Increased revegetation of cleared land in the Wellington Dam catchment, through establishment of pine plantations, will assist in reducing saline run off into the Collie River that feeds into the Dam.
  • As a result the improved water will support improved agricultural production as well as in other industries that can be serviced from the improved water supply.
  • Existing open irrigation channels in the CRID, created in the 1960s will be replaced with closed pipe network, saving approximately 15 GL of water per year through leakage and evaporation.
  • A new Burekup Weir is to be constructed upstream to provide increased head pressure to enable Wellington Dam water to reach the CRID and MIAP without need for pumps.
  • This is a significant economic development project to increase production capacity, create jobs and economic growth in the CRID and MIAP.
Page last updated: Monday, 29 October 2018 - 3:45pm