The dams are up near Hungry Bear (thus the walls up there) and at Indian village, which isn't visible from the front of the river. So the only way someone will get pics of the dams is if they are backstage, or are really really tall. haha
The Fantasmic boat staging area is behind the Indian Village and is part of the reconstruction.
I learned from one of the Mark Twain lead CMs that they plan to keep the Columbia in dry dock this spring to give it some much needed TLC and then they hope to open it up like the Mark Twain as a living museum sort of attraction.
By the way, They will let you take food and drinks aboard the Mark Twain while it is docked. They have a few tables and chairs set up on the lower two decks of the bow of the ship. A great spot for a snack with a view.
You can also ask the Pilots (The guys who steer the ship) for a tour and climb up into the upper cabin, learn how the ship is steered, and ring the bell and blow the horn and see where Walt liked to hide out.