The Molonglo Plain generally refers to the

flood plain A floodplain or flood plain or bottomlands is an area of land adjacent to a river which stretches from the banks of its channel to the base of the enclosing valley walls, and which experiences flooding during periods of high discharge.Goudi ...

of the

Molonglo River The Molonglo River, a perennial river that is part of the Murrumbidgee catchment within the Murray–Darling basin, is located in the Monaro and Capital Country regions of New South Wales and the Australian Capital Territory, in Australia. ...

and specifically the one located in the

Australian Capital Territory The Australian Capital Territory (commonly abbreviated as ACT), known as the Federal Capital Territory (FCT) until 1938, is a landlocked federal territory of Australia containing the national capital Canberra and some surrounding township#Aust ...

that was inundated during the mid-1960s in order to create

Lake Burley Griffin Lake Burley Griffin is an artificial lake in the centre of Canberra, the capital of Australia. It was completed in 1963 after the Molonglo River, which ran between the city centre and Parliamentary Triangle, was dammed. It is named after Wal ...

. This plain was one of fours plains - the Ginninderra Plain, the Limestone Plain, and the Tuggeranong Plain (Isabella's Plain) are the others - upon which the city of

Canberra Canberra ( ) is the capital city of Australia. Founded following the federation of the colonies of Australia as the seat of government for the new nation, it is Australia's largest inland city and the eighth-largest city overall. The ci ...

is situated. The term Molonglo Plains refers collectively to the flood plains along the entire length of the

, including the flood plain located north-east of Queanbeyan on the Molonglo River. The upper Molonglo Plain sometimes referred to as the Hoskinstown Plain is bordered to the east by the low ridges of the Turallo Range, Forbes Creek Ridge and Thurralilly Hill before the steep rise up to the top of the Great Dividing Range. The area is noted as the birthplace of

cricket Cricket is a bat-and-ball game played between two teams of eleven players on a field at the centre of which is a pitch with a wicket at each end, each comprising two bails balanced on three stumps. The batting side scores runs by st ...

er and

Australian rules football Australian football, also called Australian rules football or Aussie rules, or more simply football or footy, is a contact sport played between two teams of 18 players on an oval field, often a modified cricket ground. Points are scored by k ...

pioneer Tom Wills.

Upper Molonglo Plain

Some of the Queanbeyan district's most successful rural stations specifically 'Gidleigh', 'Foxlow', 'Carwoola' and 'Primrose Valley' were located on the Molonglo flood plain. 'Foxlow' was established by HC Antill who relinquished the grant to John Hoskings after whom the village of

Hoskinstown Hoskinstown is a locality in Queanbeyan-Palerang Regional Council, New South Wales, Australia. The locality, and what remains of the cluster of settlement of the same name, is 38 km southeast of Canberra the Capital city of Australia, and 299 k ...

is named.

Lower Molonglo Plain

Prior to Lake Burley Griffin's inception the fertile soils of the Molonglo plain were some of most productive in the Canberra region. John Joshua Moore was the first pastoralist to occupy land on the present site of Canberra, preceding Robert Campbell by about a year. It was, however, only an outstation formed by an overseer and a few convict stockmen. Moore's property took in the present sites of the hospital, of Civic Centre and of the Australian National University and the portions of the Molonglo Plain ''(2006), Australian Dictionary of Biography'', Australian National University In 1843 during a depression he sold the land to Lieutenant Lieutenant Arthur Jeffreys, R.N., son-in-law of Robert Campbell. Of the original buildings situated on the former Molonglo Plain, only 'Blundells cottage' remains today. It was constructed in the year 1858 by Robert's son George Campbell for the use of his ploughman William Ginn at a point above the natural flood level, about 400 metres north of the course of the Molonglo River. A number of others building situated near to or on the Molonglo Plain have been lost to Canberra's urban development over the past 70 years. The Klensendorlffe villa is one of the most impressive, a substantial oblong stone ten-roomed stone house, which stood until the mid-1920s near the present site of Albert Hall. The Acton homestead established in about 1843 by Lieutenant Arthur Jeffreys survived until 1941 when it was demolished to make way for the Canberra Community Hospital..

River flow changes

The viability of the floods plains relies of regular flood events that deposit soil and other water borne nutrients onto the plain. The Googong Dam was constructed in 1979 on the Queanbeyan River at a point about 5 km above Queanbeyan. This structure regulates river flows below the junction of the Queanbeyan and Molonglo River. The lower Molonglo River experienced its last major flooding event in 1971.

References

{{coord missing, New South Wales Landforms of the Australian Capital Territory Landforms of New South Wales Plains of Australia