From what others have told me and from what I have read, its closed to all motorized boats on sundays and Monday during the summer months between memorial day and labor day. Ive heard there is a rope that stops you from actually seeing the damn, some people said they have still driven up to the floating barriers with no problems. As far as dangers go, I haven't heard or seen anything, doesn't appear to be any big sand bars on the map. I hear the water is pretty cold up that way but its refreshing when its 110* out. I will post pics and let you know how it goes. The plan is to go that way, but, plans always change.