The falls was dry for all intents and purposes (barely trickling) when we were there despite some sporadic rains that fell in the area. Under these conditions, it was probably more of a swimming hole. I reckon you'll have to time your visit for the rains of the wet season to see this one flow (but that means contending with higher numbers of box jellyfish and other fatally-poisonous organisms of the Great Barrier Reef ecosystem if you're also interested in going in the water).