Queensland State Archives posted a photo:
Tinaroo Falls Dam is a mass concrete gravity structure located on the Barron River above a series of rapids known locally as “Tinaroo Falls” and about 100 kilometres upstream of where the river discharges into the Coral Sea near Cairns.
Construction of the Tinaroo Falls Dam allowed conservation of the waters of the Barron River and the utilization of this water to irrigate some 9000 ha annually in portion of the basins of the Barron, Walsh and Mitchell Rivers at the northern end of the Atherton Tableland. Some 800 farms are supplied with water from the channel system or by private diversion from streams supplemented by Tinaroo Falls Dam.
The decision to build the dam was made in 1952 and construction began in 1953 and was completed in 1958. The capacity of the storage is 407,000 megalitres, which under normal conditions of operation is approximately two years