MO: Rain Gardens - Sustainable Solutions for Storm Water Runoff
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Transcript of MO: Rain Gardens - Sustainable Solutions for Storm Water Runoff
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RainGardensSustainable Solutions for Storm Water Runoff
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The design of a rain garden emulates natural watersheds and wetlands.
A rain garden is a shallow basin that slows down, temporarily holds rainwater, allowing it to be. absorbed into the soil and by the plants
What is a rain garden?
Rain gardens can also be a solution to low areas
with moist soils
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Surrounding terrain that drains into the rain garden
Surrounding terrain that
drains into the rain garden
Rain garden basin
BioswaleTransition zone of
the rain garden
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What is a rain garden
Bioswale = alternately wet/dry zone
Surrounding terrain draining towards rain garden = driest zone
Transition zone surrounds the basin of rain garden = alternately wet/dry zone
Rain garden basin = this zone stays wet the longest, sometimes permanently
Overflow spillway is similar to the bioswale and directs flow towards traditional stormwater system
Examples of small residential size rain gardens
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N.C. State University
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Design Styles
Reconstructed wetlands…
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Or…Conventional/traditional
style
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The benefit of natural aesthetics and replaced habitat offers other opportunities for communities,
such as education and recreation
Design should include elements for interaction
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Rain Gardens of any size will reduce the quantity and
velocity of storm water runoff.Any reduction is a benefit.
Water quality is improved as well
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A Few Tips to Keep in Mind
*Size is approx. 20-30% of surface draining towards rain garden
*A rain garden should be no closer than 10 ft. from a building
*Basin should be 4-8” minimum
*Grade to ensure that water flows from the source to the rain garden and beyond to convention storm water
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Surrounding terrain
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Always maintain a clean edge to give a finished, ‘garden’ look
St. Phillips Church in Annapolis, MD
Olivette MO
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Sturtevant, WI
Franklin, NH
Springfield, MO
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Geauga County, Ohio
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Rhode Island
Connecticut
10,000 rain gardens in KC, MO
www.capecodgroundwater.org
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www.ci.liberty.mo.us
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www.swtdesign.com
Bioswales …can be planted dry stream beds
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Okeechobee County Cincinnati Zoo
Lincoln, NE
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St. Charles Boathouse
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Columbia, MO
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Shaw Nature Reserve
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Contrast foliar texture and plant form
Choose plants with
different bloom periods
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Native Landscaping Manualis part of the
Native Plant School held at Shaw Nature Reserve
Great plant lists of Missouri native plants for rain gardens
www.shawnature.org