Damming
The Queanbeyan Weir was constructed originally in 1901-2 which provided a pool in the Queanbeyan River near the centre of the town for the town's water supply. It is now a place for town beautification with several parks located along the river, such as Blundell Park, Queen Elizabeth Park, and Ray Morton Park. The weir also provides for minor irrigation requirements. A buttressed concrete gravity wall which was 58 metres long, raised an extra one metre to the height of 4 metres in 1951-1952. The weir has had serious impacts on native fish migration in the Queanbeyan river.
The Googong Dam is located five kilometres upstream of the town of Queanbeyan. The dam was completed in 1979 and has a maximum carrying capacity of 124,500 million litres. The Commonwealth Government owns the dam which is operated by ACTEWAGL, the ACT's electricity, water and gas utility provider. The ACT Government manages the dam foreshores. Lower flows in the river downstream of the dam since its construction, together with below average rainfall for the past decade, have modified the river channel and led to an increase in colonisation by willows and river plants which enjoy low flows. Management of the river includes eradication of these weeds.
Read more about this topic: Queanbeyan River