MO: Rain Gardens - Sustainable Solutions for Storm Water Runoff


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Rain Gardens - Sustainable Solutions for Storm Water Runoff

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MO: Rain Gardens - Sustainable Solutions for Storm Water Runoff

  1. 1. RainGardensSustainable Solutions for Storm Water Runoff
  2. 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. 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. 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. 5. N.C. State University
  6. 6. Design Styles Reconstructed wetlands…
  7. 7. Or…Conventional/traditional style
  8. 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. 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. 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. 11. Surrounding terrain
  12. 12. Always maintain a clean edge to give a finished, ‘garden’ lookSt. Phillips Church in Annapolis, MD Olivette MO
  13. 13. Sturtevant, WIFranklin, NH Springfield, MO
  14. 14. Geauga County, Ohio
  15. 15. Rhode Island10,000 rain gardens in KC, MO Connecticut
  16. 16.
  17. 17. Bioswales …can be planteddry stream beds
  18. 18. Okeechobee County Cincinnati Zoo Lincoln, NE
  19. 19. St. Charles Boathouse
  20. 20. Columbia, MO
  21. 21. Shaw Nature Reserve
  22. 22. Contrast foliar texture and plant form Choose plants with different bloom periods
  23. 23. Native Landscaping Manual is part of the Native Plant Schoolheld at Shaw Nature Reserve Great plant lists of Missourinative plants for rain gardens