Waterfalls and water features are more than just pleasing aesthetics for your garden landscaping, they are a peaceful and mind-relaxing addition that brings ambiance to your outdoor living space. Whether in quantities of large or small, trickling water makes your yard look more spacious. Outdoor waterfalls come in all shapes and sizes and make for emphatic focal points. When mulling over your design options, the main consideration is how to achieve the necessary height for the waterfall.