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Sassafras Wesley Vale Irrigation Scheme (SWIS)

ClientTasIrrigation
Value$2.9M
StateTasmania
Completed2011

The Sassafras Wesley Vale Irrigation Scheme (SWIS) is located in the Eastern extents of the North-West Coast of Tasmania. The Sassafras – Wesley Vale are is one of the most productive agricultural areas in Tasmania. The area has a long history of agricultural development and consequently significant infrastructure supporting agricultural enterprises has been developed (eg farm dams, irrigation and drainage pipes, etc). The region’s ferrosol dominated soils, close to Bass Strait, support a highly diverse variety of intensive agriculture – cropping, dairying and more recently vineyards, orchards and flowers.

The Project

The total area of approximately 15,000 hectares (ha) includes approximately 11,600 ha of agricultural land of class four or better. The system of almost 74km of pipe ranges from altitudes of approximately 40m to 160m. The trunk pipeline terminates within 1km of the coast and the spread of an area of over 10,000 hectares.

Six new branch lines have been cut-in to and existing trunk pipeline with three lines having in line booster pumps. The scheme is designed to deliver and annual total of 5,460ML of water over the summer contract period of 150 days. The water is delivered to the farmers via 123 property outlets.

The scheme consists of six branch lines connected to an existing DN900 ‘trunk main pipeline. Three branch lines are supplied by residual pressure from the trunk main (Pardoe, Thirlstane and Aldersons) while three have in-line booster pump stations (Northdown, Harford and Sassafras).

The branch lines comprise a current total branch length of almost 74km of HDPE pipeline. The branch pipe sizing ranges from 160mm up to a maximum of 450mm in diameter. Some spur lines and other offtake extensions handling lover volumes will be 125mm diameter or smaller to facilitate more cost effective, alternative installation methods.

VEC Leed JV were selected by Tasmanian Irrigation to deliver this irrigation scheme. The project required close liaison with approximately 150 property owners each with specific requirements. This was a huge undertaking and VEC have succeeded in keeping harmonious relationships with these key stakeholders.

Sassafras Wesley Vale Irrigation Scheme is designed to bring water security to one of Tasmania’s prime agricultural regions and to provide opportunities to boost food production. The scheme consists of 73km of welded poly pipe, 3 pumping stations and 122 property outlets. Water is being supplied from the disused pipeline that fed the Wesley Vale Paper Mill before its closing. The scheme ties in to this pipeline no less than six times at various locations extending from Sassafras on the western side of the Bass Highway through to Wesley Vale and Northdown.

Head Office

10b Industrial Dr, Ulverstone,
TAS 7315

PO Box 812
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112

Hobart Office

Level 3, 116 Bathurst Street
Hobart, TAS 7000

PO Box 812
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112

Melbourne Office

Level 10, 567 Collins Street, 
Melbourne, VIC 3000

PO Box 812 
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 (03) 9278 5100
Fax +61 3 6425 6112

Queensland Office

135 Coronation Drive
Milton, QLD 4064

PO Box 812 
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112