A rain garden is basically a plant pond ... You direct the rainwater from the downspouts to the garden via a swale (a stone channel) or plastic piping. Also, much likerain gardens, bioswale ...

Water from downspouts can be redirected to drain and soak into existing lawn or landscaping, porous pavement, a rain garden, swale, or rain barrels for storage and reuse. This inexpensive rainscaping ...