The reservoir created by Queensland's second largest dam,[3] Lake Maraboon was formed when the Fairbairn Dam was built on the river in 1972. The dam and a network of channels along the Nogoa River supplies water for the Emerald Irrigation Area.[4]
Sir Thomas Mitchell was the first European explorer to discover the river on 19 July 1846.[5]
Major flooding events
In January 2008, the Nogoa River reached record flood levels. During the flood, water levels in the Fairbairn Dam rapidly exceeded 100%.[6] Within a week inundations had caused severe disruptions to graziers, crops growers and to residents of Emerald when waters broke its banks. The Nogoa peaked at 15.4 m (51 ft) in Emerald on the night of January 22 2008, causing more than 2500 people to be evacuated.[7] The unprecedented floods washed through the Ensham coal mine, temporarily halting operations in two out of six coal pits, reducing output to less than 50% and rendering a huge dragline defunct after it had been submerged.[8]
The traditional owners include the Gayiri people who occupied the area for tens of thousands of years before European colonisation began in the nineteenth century. The Gayiri (Kairi, Khararya) language region takes in the landscape of the Central Highlands Regional Council, including Emerald and Nogoa River.[11]