Winnaleah Augmentation
Tranche One

There has been a dam in the Cascade River Gorge since the early 20th century. A further dam was utilised to provide reliable water to a highly diverse agricultural district

The Winnaleah Augmentation, enhancing the existing Winnaleah Irrigation Scheme, commenced operations in May 2015 and services the Winnaleah, Derby and Herrick area in North East Tasmania.

The original Winnaleah Irrigation Scheme commenced operation in 1987. Water for the scheme is collected in Frome Dam, fed by the Frome River and a diversion from the Wyniford River. A pump station is incorporated into the scheme at Toronna. The scheme now has a total capacity of 6,954 ML.

Towns / area serviced

Winnaleah, Derby and Herrick

Principal primary production focus of scheme

Poppies, potatoes, vegetables, dairy, piggeries, grass seed and essential oils.

Length of irrigation season

180-day summer delivery


KMs of pipeline




Pump Stations


Power Stations

Approval April 2010
Construction started April 2011
Operations commenced May 2012
Capacity 3,700 ML
Cost $10.82 million
Number of irrigators 33
Forecast opening Early October
Forecast closing Early May
Daily flow rate 38.6 ML / day
Initial water sales cost $1,170 / ML
Percentage of entitlements sold 100%
ML available to buy 0


Please contact our friendly team for more information about the Winnaleah:

Stuart Rainbow
Scheme Manager
Merilyn Nichols