Why Are Raingardens Important?
First and foremost, raingardens provide attractive landscaping that can turn drainage or erosion problems into beauty for your yard. But they also provide benefits to our communities, streams, and lakes in the process.
Becker SWCD has partnered with Blue Thumb partnership to promote native plants, raingardens, and shoreline plantings to improve water quality. Blue Thumb has excellent information on raingarden and native garden designing. BlueThumb.org
RAINGARDENS SERVE A VERY IMPORTANT PURPOSE
They are Independent of Shorelines
Raingardens are functional. They filter excess polluted water from streets and parking lots and make the water clean enough to respectably return to our lakes and streams, something that storm sewers just don't accomplish. Raingardens should carefully select native plants because, among other things, they have deep roots, some going down 70 inches, making them blessed with phenomenal absorption abilities. Kentucky bluegrass roots cannot begin to compete with native grasses and wildflowers for holding water.
Raingardens are built to alleviate water ponding because of nearby impervious surfaces. An impervious surface is any surface that does NOT allow the water to soak into the ground: houses, garages, hard surface driveways and roads for examples. Built correctly, a raingarden will hold water 48 hours and less, saving the concern that mosquitoes can reproduce at the raingarden site.