Wanted to share with you one of the ways we have used all the rocks we're digging out of our mountaintop property in TN. It starts with a small pond with a 40 ft. stream going into a large pond. My husband dug it with a shovel and pick ax and I helped gather the stones and do the surrounding landscaping. I'm sure it will look better in a couple years after the plants have grown but we love it, especially the sound of running water.

Here is a link that might be useful: backyard pond