Mersey River (Tasmania)
| Mersey River | |
|---|---|
 Mersey River near Latrobe | |
  | |
| Location | |
| Country | Australia |
| State | Tasmania |
| Physical characteristics | |
| Source | Lake Meston |
| • location | Walls of Jerusalem National Park |
| • coordinates | 41°53′56″S 146°13′40″E / 41.89889°S 146.22778°E |
| • elevation | 1,022 m (3,353 ft) |
| Mouth | Bass Strait |
• location | Devonport |
• coordinates | 41°10′S 146°22′E / 41.167°S 146.367°E |
| Length | 147 km (91 mi)[1] |
| Basin features | |
| Bridges | Victoria Bridge, Devonport |
| Inland ports | Port of Devonport |
The Mersey River is a river on the north-west coast of Tasmania, Australia. The city of Devonport is situated at the river's mouth on Bass Strait.
Geography
[edit]The Mersey River originates in Lake Meston, located within the Walls of Jerusalem National Park in Tasmania’s Central Highlands. The river descends through a series of alpine lakes, including Lake Youd, Lake Rowallan, and Lake Parangana, before reaching the Bass Strait at Devonport. The river’s course is characterised by its passage through glaciated landscapes, including U-shaped valleys and moraines formed during the Pleistocene epoch.[2]
Key tributaries of the Mersey River include Lees Creek, Feather Creek, Campfire Creek, Overflow Creek, and Mole Creek. The river’s flow is also supplemented by water from the Fisher River and its tributaries. Several smaller creeks, such as Lobster Rivulet and the Dasher River, join the Mersey downstream.
Hydroelectric System
[edit]The Mersey River is a vital component of Tasmania’s hydroelectric power system. The Rowallan Power Station at Lake Rowallan and the Parangana Power Station at Lake Parangana generate electricity, with water diverted westward to the Lemonthyme Power Station on the Forth River. A portion of the river’s flow continues downstream to support environmental and recreational needs.[3]
History
[edit]The Mersey River was significant to the Panninher people, who relied on its resources for sustenance and cultural practices. Following European settlement in the early 19th century, the river became a hub for timber milling and agriculture. Later, mining activities in the surrounding areas further contributed to the region’s economic development.[4]
The river gained attention in 2016 when severe flooding caused significant damage to infrastructure, including bridges and riverbanks, and created logjams in narrow sections. These events highlighted the challenges of managing extreme weather impacts on the Mersey River system.[5]
Ecology
[edit]The Mersey River supports diverse ecosystems, including habitats for platypuses, trout, and native fish species. It is also home to the Tasmanian giant freshwater crayfish (Astacopsis gouldi), the world's largest freshwater invertebrate, which inhabits the river and its tributaries. Conservation efforts aim to protect this vulnerable species from habitat disturbance and illegal fishing.[6][7]
The river's health is monitored by the Environment Protection Authority, which assesses water quality and ecosystem conditions. Reports focus on protecting aquatic ecosystems and managing environmental challenges, such as agricultural runoff and invasive species.[8]
Annual reports from the Department of Natural Resources and Environment provide data on streamflow, water allocation, and river health, contributing to sustainable management of the Mersey River.[9]
The upper reaches of the Mersey, within the Walls of Jerusalem National Park, are home to unique alpine flora and fauna. Conservation initiatives aim to preserve these environments while balancing the needs of tourism and hydroelectric development.
Recreation
[edit]
The Mersey River is renowned for trout fishing, offering opportunities to catch brown and rainbow trout.[10]
Recreational activities along the river include whitewater rafting, kayaking, and water skiing. The river hosts events such as the annual Devonport Regatta, which features boat racing, swimming, and woodchopping competitions. The Henley-on-Mersey festival in Latrobe celebrates Australia Day with unique activities like ferret racing, cherry spitting, and gumboot throwing.
See also
[edit]
References
[edit]- ^ "Mersey Catchment" (PDF). Department of Primary Industry Water and Environment. Retrieved 23 April 2017.
- ^ Spry, A. (1958). "Precambrian Rocks of Tasmania" (PDF). Papers and Proceedings of the Royal Society of Tasmania. Retrieved 28 December 2024.
- ^ "Energy Our-Power-Stations Mersey-Forth". Hydro Tasmania. Retrieved 18 April 2017.
- ^ Enever, G. (2009). "Mining and Industry in the Mersey Valley" (PDF). Journal of Australasian Mining History. Retrieved 28 December 2024.
- ^ "Two People Missing, One Dead, Hundreds Rescued as Tasmania Floods". 6 June 2016.
- ^ "Fears for Tasmanian giant freshwater lobsters after carcasses found following major flooding". ABC News. 4 August 2016. Retrieved 29 December 2024.
- ^ "Draft Recovery Plan for the Giant Freshwater Lobster (Astacopsis gouldi)" (PDF). Retrieved 29 December 2024.
- ^ "Mersey River Environmental Reports". EPA Tasmania. Retrieved 28 December 2024.
- ^ "Mersey River Annual Report" (PDF). Department of Natural Resources and Environment Tasmania. Retrieved 28 December 2024.
- ^ Gilmore, Don (2000). Trout Fishing Guide to Tasmania. Launceston: Telegraph Printery. p. 92. ISBN 095859905X.
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