The Thomson River, a
perennial river
A perennial stream is a stream that has continuous flow of surface water throughout the year in at least parts of its catchment during seasons of normal rainfall, Water Supply Paper 494. as opposed to one whose flow is intermittent. In the abse ...
of the
West Gippsland
West Gippsland, a region of Gippsland in Victoria, Australia, extends from the southeastern limits of metropolitan Melbourne and Western Port Bay in the west to the Latrobe Valley in the east, and is bounded by the Strzelecki Ranges to the so ...
catchment, is located in the
Gippsland
Gippsland is a rural region that makes up the southeastern part of Victoria, Australia, mostly comprising the coastal plains to the rainward (southern) side of the Victorian Alps (the southernmost section of the Great Dividing Range). It covers ...
region of the
Australian state of
Victoria
Victoria most commonly refers to:
* Victoria (Australia), a state of the Commonwealth of Australia
* Victoria, British Columbia, provincial capital of British Columbia, Canada
* Victoria (mythology), Roman goddess of Victory
* Victoria, Seyche ...
.
Location and features
The Thomson River rises below Newlands at the north western end of the
Baw Baw Plateau of the
Great Dividing Range
The Great Dividing Range, also known as the East Australian Cordillera or the Eastern Highlands, is a cordillera system in eastern Australia consisting of an expansive collection of mountain ranges, plateaus and rolling hills, that runs roug ...
, where it shares a watershed with the
Yarra and
Tanjil rivers. From its source, the river flows generally north, then east, then south southeast through its impoundment, then southeast, then east, and finally east by south, joined by seventeen
tributaries
A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...
including the
Jordan
Jordan ( ar, الأردن; tr. ' ), officially the Hashemite Kingdom of Jordan,; tr. ' is a country in Western Asia. It is situated at the crossroads of Asia, Africa, and Europe, within the Levant region, on the East Bank of the Jordan Rive ...
,
Aberfeldy, and
Macalister rivers, before reaching its
confluence
In geography, a confluence (also: ''conflux'') occurs where two or more flowing bodies of water join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); o ...
with the
Latrobe River
The Latrobe River (or sometimes La Trobe or LaTrobe) is a perennial river of the West Gippsland catchment, located in the West Gippsland region of the Australian state of Victoria. The Latrobe River and its associated sub-catchment is an import ...
near
Sale. The river descends over its
course
Course may refer to:
Directions or navigation
* Course (navigation), the path of travel
* Course (orienteering), a series of control points visited by orienteers during a competition, marked with red/white flags in the terrain, and corresponding ...
.
[
The Thomson Valley was intensively mined for gold during the latter half of the 19th and early 20th centuries. Prospector "Ned" Stringer discovered significant quantities of alluvial gold at the junction of what is now known as Stringers Creek. A short distance up that creek the gold mining township of Walhalla was established. The first person to walk the entire length of the river was Ronald Le Sage, father of David Le Sage, who explored its viability for a cattle droving route in 1959.
The river is impounded not far below its source by the ]Thomson Dam
The Thomson Dam is a major Clay core and rockfill embankment dam with a Uncontrolled, Ogee-shaped overflow weir and chute spillway across the Thomson River, located about east of Melbourne in the West Gippsland region of the Australian state ...
, creating Thomson Reservoir. The reservoir provides around 70% of Melbourne's water storage and supplies about 30% of Melbourne's water needs. This takes about 50% of the river's natural flow, which places a great environmental stress downstream. It particularly affects the Gippsland Lakes
The Gippsland Lakes are a network of coastal lakes, marshes and lagoons in East Gippsland, Victoria, Australia covering an overall area of about between the rural towns of Lakes Entrance, Bairnsdale and Sale. The largest of the lakes are ...
, which include Lake Wellington, Lake Victoria and Lake King. This area has international significance as a Ramsar Ramsar may refer to:
* Places so named:
** Ramsar, Mazandaran, city in Iran
** Ramsar, Rajasthan, village in India
* Eponyms of the Iranian city:
** Ramsar Convention
The Ramsar Convention on Wetlands of International Importance Especial ...
listed wetland site.Environment Victoria - Thomson River
/ref>
Diversion tunnel
The Victorian heritage-listed diversion tunnel is located on the river near its junction with Coopers Creek (and the locality of Platina), approximately south-west of . Tunnelling commenced in August 1911 and was completed around October 1912; making the diversion tunnel one of thirteen river diversions surviving from the Victorian gold rush
The Victorian gold rush was a period in the history of Victoria, Australia approximately between 1851 and the late 1860s. It led to a period of extreme prosperity for the Australian colony, and an influx of population growth and financial capita ...
.
Etymology
In the Australian Aboriginal
Aboriginal Australians are the various Indigenous peoples of the Australian mainland and many of its islands, such as Tasmania, Fraser Island, Hinchinbrook Island, the Tiwi Islands, and Groote Eylandt, but excluding the Torres Strait Islands ...
Brataualung language the river is given two names, , with no defined meaning;[ and or , meaning "]brackish water
Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuari ...
".[
The river was given its English name in 1840 by ]Angus McMillan
Angus McMillan (14 August 1810 – 18 May 1865) was a Scottish-born explorer, pioneer pastoralist, and perpetrator of several of the Gippsland massacres of Gunai people.
Arriving first in New South Wales in 1838, McMillan rose swiftly in Au ...
in honour of Sir Edward Thomson, the Chief Secretary of the Colony of New South Wales, based in Sydney.[
]
See also
* Rivers of Victoria
References
External links
*
*
{{Authority control
Rivers of Victoria (Australia)
West Gippsland catchment
Rivers of Gippsland (region)
Ramsar sites in Australia