Yes, there's natural de-watering of redds all over the place. That's not an unusual circumstance. You can point those out; they are very clear in their demarcation. Recently de-watered gravel has a very different colour. It hasn't dried out yet; it is still moist. De-watering of redds is a natural occurrence on the Fraser.
On June 1st, 2006. See this statement in context.