North Esk Irrigation Scheme - Under Development
The North Esk has now moved into construction with the project being divided into four contracts;
- Design and Construct of the 5,200ML Dalness Dam will be undertaken by Gradco Pty Ltd.
- Design and Construct of the Pipelines and Pump Stations will be undertaken by Shaw Contracting (Aust) Pty Ltd
- HDPE pipe supply will be by Zezt, Wynyard
- Outlet component supply by Bermad.
All works required to construct the NEIS are undertaken on 3rd party land. TI and Shaw Contracting will work closely with every landholder to ensure that works required are understood and agreed prior to commencement of works. Whilst TI does have the right to access land under legislation, an agreed approach to works has been a hallmark of TI projects completed to date.
Shaw Contracting will develop a Landholder Access Agreement with each landholder which details land condition prior to access, the works required and the agreed rehabilitation post works. With 84 properties involved in works, individual Landholder meetings will be staged as the project progresses.
TI will maintain proactive interaction with landholders throughout the project through construction updates, newsletter and 1:1 contact. Landholders are encouraged to contact TI’s Project Manager (Ian Smith) with any questions or concerns.
Construction of the access road and clearing of vegetation within the inundation area commenced on 14 November and Gradco are currently finalising their designs for the dam. Commencement of below ground works is planned to commence before Christmas 2017. Practical Completion for the dam is September 2018.
Pipelines and Pump Stations
The construction design for the pipelines and pump stations has been broken into two parts reflecting the transfer line from the North Esk River and the distribution network from the Dalness Dam. Works will all concentrate initially on the transfer line to ensure that water is able to be collected from the North Esk during the winter of 2018. Construction work is planned to commence in February 2018.
The distribution network will follow with construction timing expected to start from April 2018.
Practical Completion for the scheme is scheduled for December 2018.
The North Esk Irrigation Scheme proposes to take water from the North Esk River at Watery Plains, Blessington during the winter and transfer it to a to-be-constructed storage at White Hills. The 5,200ML “Dalness Dam” will be used to store scheme water for delivery during a 120-day irrigation season nominally from November through March each year.
The scheme is fully subscribed, with no further water being available for sale from Tasmanian Irrigation. The scheme will deliver the purchased water to service landholders in White Hills, Evandale, Relbia and the Nile Road area.
Two pump stations are proposed for the scheme: The North Esk Watery Plains transfer pump station, and a boost pump for the Logan spur to Logan Road areas. The majority of the scheme’s water (99%) will be distributed via gravity from the Dalness Dam.
Some 63km of pipelines are proposed varying in size from 710mm down to 160mm. These pipes are all proposed to be of High Density Poly Ethylene (HDPE) and will be installed with a minimum of 700mm of cover from the top of the pipe.
Tasmanian Irrigation has also undertaken numerous supporting studies for the scheme and a summary of the permits and approvals is listed below:
|North Esk Irrigation District||Approved|
|5,000ML water licence from the North Esk||Approved|
|Permit to take Threatened wildlife (decommission wombat burrows)||Approved|
|Permit to take threatened fauna (misc. herbs)||Approved|
|Quarry Permit – Development Application||Approved|
|Division 3 Permit to construct a dam||Approved|
|Referral under the Environment Protection and Biodiversity Conservation Act (EPBC)||Not a Controlled Action|
|Aboriginal Heritage permit||Pending|
|Development Application – Launceston City Council||Pending|
|Development Application – Northern Midlands Council||Pending|
|Forest Practices Plan||Pending|
The current timeline for the project is:
Design complete for Dalness Dam and transfer infrastructure.
Dam below ground works in progress
|February 2018||Transfer infrastructure works commence|
|March 2018||Distribution infrastructure design complete|
||Distribution infrastructure construction commence|
||Commissioning of the transfer infrastructure|
||Practical completion of Dalness Dam|
|Winter 2018||Commencement of dam filling|
|December 2018||Practical completion of pipelines and pump stations|
Overview / Pricing / Maps
- Ian Smith (Project Manager)
- Aaron Cassidy (Project Engineer)
- Charles Watson (Working Group Chair)