Mikany Dam upgrade

Updated January 2020

Background

Mikany Dam is located six kilometres south-east of Smithton in the state’s north west. It is referred to by local residents as Lake Mikany.

The dam was originally built in 1972 and has two main embankments, as well as a smaller embankment which provides access to an island in the centre of the lake. The dam is gravity-fed from Deep Creek and Muckeye Creek catchments and is the primary source of potable water for Smithton, Stanley and Irishtown. Water is supplied to these towns via Deep Creek to an off-take downstream, where it is pumped to a treatment plant at Smithton prior to distribution.

Project description

TasWater identified a need for upgrades to meet improving Dam Safety standards and associated Australian National Committee on Large Dams (ANCOLD) guidelines. As a result, a substantial investment is required to reduce the risk the dam poses, while also providing a sustainable water supply for customers.

The major features of this upgrade include:

  • Increasing the strength of both embankments by constructing filter and rock-fill berms
  • Improving the spillway in order to bring the dam into compliance with Australian National Committee on Large Dams (ANCOLD) safety standards
  • A small increase in the height of the dam wall to provide protection in the event of an extreme significant flood

The result of the upgrade will be a dam which meets modern standards, is safe, improves water security, and can provide flood protection for much larger floods.

Timelines for the project

The upgrade project is scheduled to begin 3 February 2020, with the project to be completed by August 2021.

Community impact of works

In the interests of public safety, access to the dam site will be closed until the project is completed. Reservoir Road access will be restricted to local residents and construction vehicles during this time.

Public access to the reservoir site will be reinstated after the project has been completed in 2021.

There will be a large number of truck movements in and out of the site (along the Bass Highway between Smithton and Stanley, and Reservoir Road), in order to move materials needed for construction. There will also be some noise at the site during construction.

For more information

If you have any questions or would like to know more about this project, please contact TasWater's CDO Community Engagement Officer, Nani Clark, on 13 6992 or email enquiries@taswater.com.au

Updated January 2020

Background

Mikany Dam is located six kilometres south-east of Smithton in the state’s north west. It is referred to by local residents as Lake Mikany.

The dam was originally built in 1972 and has two main embankments, as well as a smaller embankment which provides access to an island in the centre of the lake. The dam is gravity-fed from Deep Creek and Muckeye Creek catchments and is the primary source of potable water for Smithton, Stanley and Irishtown. Water is supplied to these towns via Deep Creek to an off-take downstream, where it is pumped to a treatment plant at Smithton prior to distribution.

Project description

TasWater identified a need for upgrades to meet improving Dam Safety standards and associated Australian National Committee on Large Dams (ANCOLD) guidelines. As a result, a substantial investment is required to reduce the risk the dam poses, while also providing a sustainable water supply for customers.

The major features of this upgrade include:

  • Increasing the strength of both embankments by constructing filter and rock-fill berms
  • Improving the spillway in order to bring the dam into compliance with Australian National Committee on Large Dams (ANCOLD) safety standards
  • A small increase in the height of the dam wall to provide protection in the event of an extreme significant flood

The result of the upgrade will be a dam which meets modern standards, is safe, improves water security, and can provide flood protection for much larger floods.

Timelines for the project

The upgrade project is scheduled to begin 3 February 2020, with the project to be completed by August 2021.

Community impact of works

In the interests of public safety, access to the dam site will be closed until the project is completed. Reservoir Road access will be restricted to local residents and construction vehicles during this time.

Public access to the reservoir site will be reinstated after the project has been completed in 2021.

There will be a large number of truck movements in and out of the site (along the Bass Highway between Smithton and Stanley, and Reservoir Road), in order to move materials needed for construction. There will also be some noise at the site during construction.

For more information

If you have any questions or would like to know more about this project, please contact TasWater's CDO Community Engagement Officer, Nani Clark, on 13 6992 or email enquiries@taswater.com.au