In the front yard, the streambed is edged by a manicured lawn and a perennial border that reflects the homeowners’ passion for gardening and affection for bold colors
Native Plants: The More the Merrier
make a dry river bed - Bing Images
Another dry stream bed - this one is probably more realistic as far as landscaping goes.love the small arch footbridge.
Dry Stream Does Double Duty. Fine Gardening also has a great tutorial on making a dry stream bed, but to get to the actual directions, you need to go to page 3 in their post. The first two pages has good information though, so take a peek.
Sharing Nature's Garden: Reducing your lawn with beautiful alternatives