In landscapes, water functions and behaves according to the ecological quality of a place. Water collects on the surface of the land in channels (rivers, streams, pipes) or in sinks as lakes, ponds, pools, or reservoirs. Wetlands are sinks for water, but not as primary receivers of water. In their natural form, edges of channels and sinks are usually flexible, able to adapt to a moderate amount of varied flow conditions and are composed of a variety of materials. The amount of impervious surfaces in a watershed has much influence on the condition, behavior and possibilities for constructing or restoring edges. In watersheds with less than ten percent of land area composed of impervious surfaces, the biotic diversity for that watershed can be maximized. At Living Habitats, we specialize in the planning and design of healthy watersheds at a variety of scales.