A soak refers to water located under the surface of the sand of a dry river or creekbed. In times of low rainfall, the water can be recovered by digging a hole. (271)
Reference: Dame Mary Durack, Hugh Swarey, R.M. Williams, Olaf Ruhen, Ron Iddon, Keith Willey, Marie Mahood, The Stockman, Lansdowne, Sydney, 1984