Meander River (Tasmania)

The Meander River rises on the northern slopes of the Great Western Tiers, part of the Tasmanian Wilderness World Heritage Area, and flows generally north-east through a valley carved by past glaciation. It passes through the towns of Meander and Deloraine, then continues past Westbury and Carrick before joining the Tamar River near the village of Rosevale. The catchment is underlain by Jurassic dolerite and Tertiary basalts, which influence soil fertility and groundwater flow.

Several tributaries, including the Liffey River and Quamby Brook, contribute to the Meander's flow. The river is regulated by the Meander Dam, completed in 2007, which provides irrigation water for the region's agricultural sector, particularly for dairy and cropping operations.

The river supports a diverse riparian ecosystem, with native vegetation including blackwood, manuka, and tea-tree along its banks. It is home to several native fish species, such as the Australian grayling and the spotted galaxias, which migrate between fresh and salt water. The river also provides habitat for the platypus and the green and gold frog, both of which are sensitive to water quality changes.

Water quality is monitored by the Tasmanian Environment Protection Authority, with concerns about nutrient runoff from agricultural land and sedimentation from erosion. In 2016, a major fish kill occurred downstream of Deloraine, attributed to low oxygen levels after a summer drought.

Aboriginal Tasmanians, particularly the Pallittorre people, inhabited the Meander valley for thousands of years, using the river for food and water. European settlers arrived in the 1820s, and the river became central to early agriculture, with mills and bridges built at Deloraine and Westbury. The river was used for water supply and waste disposal, leading to pollution problems by the late 19th century.

In the 20th century, the river was managed for flood mitigation and irrigation. The Meander Dam, a 45-metre-high earthfill structure, was built to secure water supply for the region, but it has been controversial due to environmental impacts and cost overruns.

The Meander River is one of the few rivers in Tasmania that flows north, a result of the island's complex geological history. It is also notable for its 'meanders'—the river's sinuous course gave rise to its name, which is unusual for a river that is not particularly winding compared to others.

In the 19th century, the river was used for log driving, with timber floated downstream to sawmills. A rare freshwater sponge, Ephydatia fluviatilis, has been recorded in the river, and the river is a site for the endangered Tasmanian giant freshwater lobster, though its presence is now rare. The river also features in local Aboriginal oral traditions, which describe it as a dreaming track.

Meander Dam

An earthfill dam on the Meander River, completed in 2007, used for irrigation supply.

Great Western Tiers

A mountain range in northern Tasmania, part of the Tasmanian Wilderness World Heritage Area.

Tamar River

A large estuary in northern Tasmania, into which the Meander River flows.