Grateandgate.jpg|Combination of trench drain and winter shut off gate: King Street, Kitchener, ON
Grateandgate.jpg|Combination of trench drain and winter shut off gate: King Street, Kitchener, ON
−
+
Bioretention system, or rain garden, in Portland, US.jpg|Bioretention system, or rain garden, in Portland, US Taken in April 2013 <br>Photo credit:[[Acknowledgements|EmilyBlueGreen]]