Department of Natural Science
Edgewood College
Madison, Wisconsin
Rain Garden #1 Construction, Spring 2000 |
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| Rain Garden #1
Before construction (April 2000)- rainwater collected at the upstream
end of the swale that had been intended to direct water to the lake via
a culvert at the far end. The orange line marks the area that was later
planted to increase infiltration. |
Rain Garden #1 during construction (April 2000). The soil, consisting largely of clay with some silt loam, has been turned over in preparation for planting. |
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| Planting the rain garden (May 2000). | After planting and mulching with hay (May 2000) |
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Rain Garden #1 ends at a stormwater culvert that drains to Lake Wingra.
Our goal is for the rain garden to retain the water, and filter organic
material and other pollutants, to prevent them from entering the lake.
This photo, taken after a torrential rain the day before (more than 1
inch in about an hour), shows how much of the stormwater backed up at
the dam we created at the culvert. |
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rain garden doing its job of retaining storm runoff after the June 14
rainfall. We anticipate that the infiltration rate will greatly increase
as the plants become established in what was originally solid clay and
gravel fill. |
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| Constructing the extension to Rain Garden #1, Spring, 2001 | |
