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Rain Gardens & Bioswales Construction (Brownsburg, January 2011)

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Rain Gardens & Bioswales Construction (Brownsburg, January 2011)

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ain Gardens and bioswales are some of our most effective tools in implementing sustainable water practices.

In the presentation, Barrett will discuss how rain gardens and bioswales protect, restore, and mimic the natural water cycle. Additionally, Tom will explain how rain gardens and bioswales can help develop a natural solution for water efficiency, and relieve storm water management issues. Rain Gardens and bioswales create natural filters through which our rainwater can flow. We are in essence helping to remove the contaminants, while reducing the speed and volume in which the water runs to the storm drains. By choosing to create a rain garden or other environmentally responsible landscape solution, we can reduce the contaminants that collect in the sewer systems, and make a significant improvement for a cleaner and healthier environment.

ain Gardens and bioswales are some of our most effective tools in implementing sustainable water practices.

In the presentation, Barrett will discuss how rain gardens and bioswales protect, restore, and mimic the natural water cycle. Additionally, Tom will explain how rain gardens and bioswales can help develop a natural solution for water efficiency, and relieve storm water management issues. Rain Gardens and bioswales create natural filters through which our rainwater can flow. We are in essence helping to remove the contaminants, while reducing the speed and volume in which the water runs to the storm drains. By choosing to create a rain garden or other environmentally responsible landscape solution, we can reduce the contaminants that collect in the sewer systems, and make a significant improvement for a cleaner and healthier environment.

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Rain Gardens & Bioswales Construction (Brownsburg, January 2011)

  1. 1. Rain Gardens & Bioswales By Tom Barrett Green Water Infrastructure, Inc. www.ThinkGWI.com Follow us on Twitter @TomBarrett_GWI Tom.Barrett@ThinkGWI.com © 2011 Tom Barrett
  2. 2. The GREEN Economy
  3. 3. How Much Rain Falls in Chicago? January - 1.86" Image of Rain Falling February - 1.58" March - 2.59" April - 3.28" May - 3.75" June - 4.08" July - 3.39" August - 3.38" September - 2.91" October - 2.65" November - 2.09" December - 1.88" Total 33.44"
  4. 4. How Much Water Falls in Chicago? 2,500 sq. ft. Roof January - ,727 gallons 2 Image of Rain Falling February - ,540 2 March - ,130 4 April - 5,735 May - ,268 5 June - 5,657 July - ,470 5 August - ,200 7 September - ,096 5 October - ,223 4 November - 4,691 December - 3,787 Total 6,525 5
  5. 5. How Much Water Falls in Chicago? 3 Acre Commercial Property January - 42,560 gallons 1 Image of Rain Falling February - 32,784 1 March - 15,876 2 April - 299,783 May - 75,344 2 June - 295,710 July - 85,934 2 August - 76,358 3 September - 66,383 2 October - 20,764 2 November - 245,203 December - 197,954 Total 2,954,654
  6. 6. How Much Water Falls in Chicago? City Block (660’ x 660’ – 10 acres) January - 75,195 gallons 4 February - 42,610 4 March - 19,581 7 April - 999,267 May - 17,805 9 June - 985,690 July - 53,105 9 August - ,254,515 1 September - 87,936 8 October - 35,873 7 November - 817,335 December - 659,842 Total 9,848,756
  7. 7. Low Impact Site Development
  8. 8. Stormwater Mitigation Stormwater Mitigation Stormwater Mitigation Stormwater Mitigation Stormwater Mitigation
  9. 9. Peak Flow (2,500 ft. sq. Roof) Grass Field Roof 1 Year Storm 36 gpm 111 gpm 2 Year Storm 54 gpm 139 gpm 10 Year Storm 111 gpm 206 gpm 25 Year Storm 147 gpm 245 gpm 100 Year Storm 206 gpm 309 gpm gpm – gallons per minute
  10. 10. Peak Flow (1 Acre Site) Grass Field Roof 1 Year Storm 630 gpm 1,932 gpm 2 Year Storm 942 gpm 2,424 gpm 10 Year Storm 1,932 gpm 3,588 gpm 25 Year Storm 2,556 gpm 4,266 gpm 100 Year Storm 3,588 gpm 5,388 gpm gpm – gallons per minute
  11. 11. Change in Peak Runoff Flow Before and after Development 300% 225% 150% 75% 0% m m m m m S tor S tor S tor S tor S tor ar r r r r Ye ea Ye a Ye a Ye a 1 2Y 10 25 0 10 Stormwater Effects of Urbanization
  12. 12. Image of Rain Falling
  13. 13. Pesticide Issues Atrazine, Nitrogen, Phosphorous
  14. 14. Stormwater Mitigation – Collection runoff near the source – Slow it down – Soak it in – Filter it – Apply it to the landscape – Create habitats
  15. 15. Simple Rain garden
  16. 16. Bioswales Engineered Soils Underdrain
  17. 17. Location Plant Choices Rain gardens are often located at the end of a roof or drain spout. Choose plants based on the need for light and soil type. Depth Size Soil A Rain Garden usually A tpical mix is 65% A typical Rain Garden five to ten percent of sand, 15% top soil, is between four to the impervious surface 25% organic matter. eight inches deep. area. Rain Gardens
  18. 18. Rain Garden
  19. 19. Bioswales Burnsville, Minnesota
  20. 20. Native Vegetation www.epa.gov/greenacres/ www.for-wild.org
  21. 21. Street Edges & Medians
  22. 22. Parking Lot Edges
  23. 23. Parking Lot Islands
  24. 24. Driveway Edge
  25. 25. Neighborhoods
  26. 26. Rain Garden Indianapolis
  27. 27. Rain Garden Indianapolis - Fall Creek Parkway
  28. 28. Functional Landscapes
  29. 29. Thank You

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