The Sassafras Wesley Vale Irrigation Scheme commenced operations in November 2012 and services the Sassafras, Harford, Thirlstane, Moriarty, Wesley Vale, Northdown, Pardoe and East Devonport areas in North West Tasmania. Water supplied for this scheme is sourced from the Mersey River at Great Bend. During periods of low river flows, the reliability of supply is underpinned by releases from Lake Parangana.
Water is pumped into a small reservoir at Great Bend, before being delivered throughout the irrigation district by 85kms of pipeline. Boost pumping operates at three sites: Sassafras Pump Station, Harford Pump Station and Northdown Pump Station.