Lake Gregory, also known as the Isis Balancing Storage or simply as The Duckpond is a small impoundment between Bundaberg and Childers in Queensland, Australia completed in 1986. Since 1991, lake has been stocked with 80,000 bass and 25,000 Silver Perch. Garfish and eel-tailed catfish occur naturally. Lake Gregory is the closest freshwater storag…Lake Gregory, also known as the Isis Balancing Storage or simply as The Duckpond is a small impoundment between Bundaberg and Childers in Queensland, Australia completed in 1986. Since 1991, lake has been stocked with 80,000 bass and 25,000 Silver Perch. Garfish and eel-tailed catfish occur naturally. Lake Gregory is the closest freshwater storage lake to Bundaberg and is surrounded by the Elliott State Forest. A Stocked Impoundment Permit is required to fish in the dam.