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Abstract
The purpose of this project was to determine whether there is a difference in the infiltration rates between new and established rain gardens. To test this, two rain gardens located in Wauwatosa, Wisconsin, were utilized. The flow of water into the gardens and the depth of water present in the gardens were measured over the course of several weeks, and direct infiltration tests were conducted in order to calculate the infiltration rates for each garden. After these data were analyzed, it appeared that there was no change in the infiltration rates between the newer and established gardens that were analyzed. It was found, however, that the infiltration rates of rain gardens in general may be underestimated in technical design standards.