I like the first and third ones the best. I would be tempted to crop off the right hand side of number 2, but then it would similiar to number 1. - Paul
Don't know how I could have missed these, very nice. I think I'd take out that tree to the right in number 2 even if it does create similarities, it's just not helping. I definitely love the primeval forest of the last.
Very nice series of Nooksack falls. For people that have never seen the falls it is not easy to shoot at all you are contained in a small area with a chain link fence. It is almost impossible to get a image of the whole falls unless you are using a UWA lens then there is lots of distractions to the right side of the frame.
You did a nice job here capturing a cool falls.