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MO: Rain Gardens - Sustainable Solutions for Storm Water Runoff

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Rain Gardens - Sustainable Solutions for Storm Water Runoff …

Rain Gardens - Sustainable Solutions for Storm Water Runoff


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  • 1. RainGardensSustainable Solutions for Storm Water Runoff
  • 2. What is a rain garden? 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 Rain gardens can also be a solution to low areas with moist soils
  • 3. Surrounding terrain that drains into the rain gardenTransition zone of the rain garden Bioswale Surrounding terrain that drains into the rain garden Rain garden basin
  • 4. Surrounding terrain draining towards rain garden = driest zone Bioswale = alternately wet/dry zone Transition zone surrounds the basin of rain garden = alternately wet/dry zone What is a rain garden Rain garden basin = this zone stays wet the longest, sometimes permanently Overflow spillway is similar to the bioswale and directs flow towards traditional stormwater systemExamples of small residential size rain gardens
  • 5. N.C. State University
  • 6. Design Styles Reconstructed wetlands…
  • 7. Or…Conventional/traditional style
  • 8. Design should include elements for interaction The benefit of natural aestheticsand replaced habitat offers other opportunities for communities,such as education and recreation
  • 9. Rain Gardens of any size will reduce the quantity andvelocity of storm water runoff. Any reduction is a benefit. Water quality is improved as well
  • 10. A Few Tips to Keep in Mind*Size is approx. 20-30% of surfacedraining towards rain garden*A rain garden should be no closer than10 ft. from a building*Basin should be 4-8” minimum*Grade to ensure that water flows fromthe source to the rain garden andbeyond to convention storm water
  • 11. Surrounding terrain
  • 12. Always maintain a clean edge to give a finished, ‘garden’ lookSt. Phillips Church in Annapolis, MD Olivette MO
  • 13. Sturtevant, WIFranklin, NH Springfield, MO
  • 14. Geauga County, Ohio
  • 15. Rhode Island10,000 rain gardens in KC, MO Connecticut www.capecodgroundwater.org
  • 16. www.ci.liberty.mo.us
  • 17. Bioswales …can be planteddry stream beds www.swtdesign.com
  • 18. Okeechobee County Cincinnati Zoo Lincoln, NE
  • 19. St. Charles Boathouse
  • 20. Columbia, MO
  • 21. Shaw Nature Reserve
  • 22. Contrast foliar texture and plant form Choose plants with different bloom periods
  • 23. Native Landscaping Manual is part of the Native Plant Schoolheld at Shaw Nature Reserve Great plant lists of Missourinative plants for rain gardens www.shawnature.org