Rain Gardens

Hiram College Century House Rain Garden 6/25/13 Photo taken by Ryan Astalos

  Q&As What is a rain garden? A rain garden is a bioretention area designed to retain or detain stormwater before it is filtered downstream. What are the benefits of a rain garden? Rain gardens can be used to benefit flood control, channel protection, groundwater recharge, and pollutant removal. Where can a rain garden be built? A rain garden can be built in areas such as residential yards, commercial developments, parking lot islands, and roadways. What are the costs associated with rain gardens? The cost of a rain garden depends on the area being landscaped. Costs per acre of development range from $5,000 to $10,000 for larger areas and range from $3.00 to $15.00 per square foot. Are there any risks of having rain gardens? They do require some maintenance to ensure proper function. Some areas, such as over septic tanks, are not ideal locations for rain gardens. Links 1) Bioretention areas, or rain gardens, are landscaped features adapted to provide on-site treatment of stormwater runoff. This link demonstrates the applicability of rain gardens, siting and design considerations, maintenance considerations, limitations, costs, and effectiveness. http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=factsheet_results&view=specific&bmp=72 2) The University of Florida provides a PDF for information on a rain garden, which can be found in the link below. The PDF outlines applications of rain gardens, benefits, design considerations, operation and maintenance, and lastly, regulatory considerations. http://buildgreen.ufl.edu/Fact_sheet_Bioretention_Basins_Rain_Gardens.pdf 3) The EPA created a PDF brochure that can be found in the link below. It illustrates the purpose of rain gardens, the best locations to plant them, what plants to use, when rain gardens aren’t beneficial, and how to create a rain garden. http://cfpub.epa.gov/npstbx/files/cwc_raingardenbrochure.pdf

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