We are doing some landscaping in our front yard in a south-north (front door facing north) facing house. I'm thinking of putting in a decorative rock dry creek (similar to the attached photo). Dry creek symbolize water, but it's made of stone. So in feng shui, is it considered as water or stone/earth? Is it a good idea to have dry creek in the front yard? If so, which direction should the dry creek flow symbolically? Toward the house, away from the house or parallel the house (east-