Lake Lefroy is a large ephemeral salt lake located in the Goldfields-Esperance region of Western Australia, situated approximately 55 kilometres south of Boulder. The town of Kambalda sits on the northern shore, while the hamlet of Widgiemooltha lies near the southern edge. With an estimated surface area of around 554 square kilometres, Lake Lefroy is a naturally occurring salt lake — a clay pan covered with a crust of salt that supports little vegetation. The lake fills episodically in response to heavy rainfall, and when water is present, it is shallow and highly dynamic, blown back and forth across the lake bed by prevailing winds. Due to high evaporation rates, surface water may persist for only a few months following inundation. Given its saline, ephemeral nature, Lake Lefroy does not support recreational fishing and is not a viable fishing destination.