 A water feature is a great way to start a backyard retreat because it will work in almost any size space or budget. It provides a visual focal point while the sound of moving water creates a soothing atmosphere and blocks out neighborhood noises like traffic. Large or small, the basic components are the same. The upper pool or basin and a lower one. The two pools are connected together by plumbing while a small pump moves the water from the bottom back to the top after gravity brings it back down.