Cotter Dam

Location: Cotter River

Storage Capacity: 3,856 million litres* fed from a 482 square kilometre catchment area which also contains the Bendora and Corin Dams.

Top water level: 500.69m above sea level

Facts: Cotter Dam is a concrete gravity dam built in 1912 (height raised in 1951). Cotter Dam was not used for water supply for many years as Bendora and Corin Dams usually have better water quality. In December 2004 ActewAGL brought the Cotter Dam online in response to the ongoing drought.

* A review of reservoir volumes in 2005/2006 has resulted in ACTEW adjusting reported volumes. The change in volumes is a direct result of more accurate mapping methods used to determine volumes compared with methods used in the 1960s, when the previous volumes were calculated. A review of volumes of the Corin and Bendora reservoirs, effective 1 November 2005, has resulted in ACTEW adjusting the reported volumes from 75.4 gigalitres (GL) to 70.90 GL for Corin and from 10.7 GL to 11.54 GL for Bendora. A review of volumes of the Cotter and Googong reservoirs, effective 1 October 2006, has resulted in ACTEW adjusting the reported volumes from 4.7 gigalitres (GL) to 3.86 GL for Cotter and from 124.5 GL to 121.1 GL for Googong.