Lake Corella is a concrete-faced (gunite) rockfill embankment dam built across the Corella River in north-western Queensland, Australia. Completed between 1956 and 1957, the resultant reservoir provides potable water for the Mary Kathleen Uranium Mine. The dam is located immediately south of the Barkly Highway, about west of .
The dam originally had a gated control structure, which was removed in 2004, lowering the spillway and reducing the full supply level. When full, the reservoir has a surface area of and holds of water.
Clem Walton Park is a popular camping area on the shore of the lake.