how deep is lake eyre in australia?
<answer> Lake Eyre was 6 m or 20 ft deep. <context> In 1974 Lake Eyre was 6 m (20 ft) deep. Local rain filled Lake Eyre to 3.5 m (11 ft) in 1984 and 1989. Very heavy rain in January 2007 took about six weeks to reach the lake but put only a small amount of water into it.