Bioretention system, or rain garden, in Portland, US.jpg|[[Bioretention]] system, or [[rain garden]] with a decorative trench drain cover, in Portland, US Taken in April 2013. Photo credit:[[Acknowledgements|EmilyBlueGreen]] | Bioretention system, or rain garden, in Portland, US.jpg|[[Bioretention]] system, or [[rain garden]] with a decorative trench drain cover, in Portland, US Taken in April 2013. Photo credit:[[Acknowledgements|EmilyBlueGreen]] |