7sigma RainGarden64.JPG|The sunken curb holds the edge of the asphalt pavement and lets water freely flow to the [[bioretention cell]] beside the 7sigma parking lot in Minneapolis, MN (USA)<br>Photo credit:[[Acknowledgements|BrianAsh]] | 7sigma RainGarden64.JPG|The sunken curb holds the edge of the asphalt pavement and lets water freely flow to the [[bioretention cell]] beside the 7sigma parking lot in Minneapolis, MN (USA)<br>Photo credit:[[Acknowledgements|BrianAsh]] |