The E.J. Beardmore Dam, an earth-fill embankment dam with a concrete gravity wall across the Balonne River, is located in South West Queensland, Australia. The main purpose of the dam is for irrigation. The resultant reservoir is called Lake Kajarabie.

Location and features

Located 17 km north-east of St George, the dam wall was completed in 1972. The dam wall is 15.2 m high and 2571 m long and holds back 81800 ML of water when at full capacity. The surface area of the reservoir is 2850 ha and the catchment area is 75032 km2. The uncontrolled spillway has a discharge capacity of 5550 m3/s. Lake Kajarabie has an average depth of 2.4 m and, when full, impounded water can back up some 75 km along the Balonne River and almost 20 km along the Maranoa River.