The Tinaroo Dam, officially the Tinaroo Falls Dam, is a major ungated concrete gravity dam with a central ogee spillway across the Barron River located on the Atherton Tableland in Far North Queensland, Australia. The dam's purpose includes irrigation for the Mareeba-Dimbulah Irrigation Scheme, water supply, hydroelectricity generation, and recreation. C…The Tinaroo Dam, officially the Tinaroo Falls Dam, is a major ungated concrete gravity dam with a central ogee spillway across the Barron River located on the Atherton Tableland in Far North Queensland, Australia. The dam's purpose includes irrigation for the Mareeba-Dimbulah Irrigation Scheme, water supply, hydroelectricity generation, and recreation. Completed between 1953 and 1958, the dam creates the impounded reservoir, Lake Tinaroo.