Urban Ecoist

A very wet example of a rain garden...

I was just reading the City of Chicago’s Green Alleyways Handbook, and I came across the idea of building a rain garden to help with storm water runoff. Then I started thinking about it, and with Spring’s showers on the way, now would be a good time for us all to consider building a rain garden in our urban spaces.

Now, obviously, some urbanites will not have the option to construct a rain garden, large or small, as they may not have any yard space at their disposal. It’s not like you can build a container rain garden (or can you?) — but you can find a way to capture your own fair share of rainwater to save from the sewer (but make sure it’s not in a copper bowl like in that one episode of Different Strokes when Dana Plato’s hair turned green), for example, in a rain barrel. But that’s another topic, another day.

...And a very dry one.

Rain gardens are not rocket science, but you do have to do some planning and a little science will come into the project before it’s done. It is best for your back if you already have noticed a spot in your yard where there is a depression where rain water already collects during storms. If you have multiple low-spots, choose areas next to paved areas like patios or roadways or by downspouts. Although remember that you will not want the water too close to your house (within 10 feet) or large trees, either. Sure, a rain garden may be dry 85% of the time, but there is still that other 15% of the time.

A great place to start your planning is a site called Raingardens.org. appropriately enough. It’s a really comprehensive site, which I won’t do justice to by gleaning pertinent info and passing it off as my own, so check it out by clicking here. The organization is based in Western Michigan, but anyone living anywhere can learn from the site’s extensive information.

Whether you have a little space or a lot of space, you give a little something back to the groundwater that supports your life by letting a bit of your garden space work to recharge that groundwater. Rain is filtered naturally through your rain garden, where it finds its way down, down into the deep soil and into the groundwater supply. If it were not for your rain garden, that same storm water may instead find its way into a swollen roadway which picks up all the leaking fluids from cars young and old and then into the sewer system, where it will meet more microbial friends, before being treated at a facility and then returned to your groundwater supply.

Maybe I’m being overly dramatic, but with the inevitable Water Wars coming…start planning now.

rain garden, garden, gardening, rain water, storm water, rain, water management, sewer, treatment, groundwater, water supply