Dogwood Canyon Nature Park in Southwestern Missouri is one of the jewels of the state. They have about 4 miles of paths that follow this stream through a valley/canyon south all the way to Arkansas. On the way you will view spectacular scenery including never ending waterfalls. A few ways to experience the area is by tram or walking. I prefer to walk in order to get the full experience.
It is an amazing place. Click here for more photos of Dogwood Canyon and its parent facility, Big Cedar Lodge.
To get a photo like this, use a tripod, use the lowest ISO you can, the highest f stop and a very dark ND Filter. You want the shutter open as long as possible to get the falls to blur and have white tint.
Great Rivers Imaging 