This used to be the UPD Falls when we visited 30 years ago. We were the only ones there all day and overnight. It is truly beautiful and we swam for hours.
I don’t recall if there was any mention of crocs but it was fresh water so they would only have been the Johnston River variety.
I remember we were all swimming completely naked and my wife and I having a bit of fun in the water as our kids played nearby.
I’d love to return.