Rain gardens for home drainage help, david dods, 06 09-12


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Rain gardens for home drainage help, david dods, 06 09-12

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Rain gardens for home drainage help, david dods, 06 09-12

  1. 1. Rain Gardens for Home Drainage Help Based on: The Blue Thumb Guide to Raingardens by Rusty Schmidt, Dan Shaw, and David Dods by David Dods
  2. 2. TAME THE RAIN Thanks to our Sponsors: Mid-America Regional Council (MARC) and City of Overland Park, Kansas with funding through KDHE from an EPA 319 GrantPhotos: David Dods; Andy Dandino, MARC
  3. 3. Overland Park Residential Stormwater Treatment Cost-Share Reimbursement Program: http://www.opkansas.org/Resident-Resources/STF-Cost-Share-Program or go to: www.opkansas.org and type “cost share” in the search boxPhotos: David Dods
  4. 4. David Dods’ Contact Information Day Job: Environmental Engineer Green Solutions Stormwater Controls for Municipal, Commercial, and Industrial Sites URS Corp. 8300 College Blvd., Suite 200 Overland Park, Kansas 66210 david.dods@urs.com 913.344.1022 In my Spare Time: Co-author, The Blue Thumb Guide to Raingardens Published by Waterdrop Innovations Available at www.Terracehorticulturalbooks.com www.Amazon.com email: raingardens@yahoo.comPhotos: David Dods; Lynn Hinkle
  5. 5. What is a Rain Garden? • A garden made to catch rain water • Collects drainage from downspouts, driveways, patios, sump pumps • With deep-rooted plants that don’t mind getting wet occasionallyPhoto: David Dods
  6. 6. What is a Rain Garden? • A garden with a shallow bowl to collect water • Soaks water into the ground; Slows runoff • Dries out in 1 day • Is not a wetland or Koi pond • Creates attractive landscaping and habitatIllustration: Dan Shaw, Waterdrop Innovations
  7. 7. Rain Garden Examples
  8. 8. My Home Rain Garden (early Spring) Collects Runoff from Driveway Prevents Erosion in YardPhoto: David Dods
  9. 9. My Home Rain Garden Filling up with WaterPhoto: David Dods
  10. 10. Front Yard Roof Downspout to Rain Garden in Flower BedPhoto: Rusty Schmidt & Washington Conservation District
  11. 11. Runoff from Downspout Behind Shallow Retaining Wall on Sloped YardYard: Lynn Hinkle, Weatherby LakePhotos: 1) Lynn Hinkle, 2) David Dods
  12. 12. Sump Pump Drain PointYard: Scott Cahail, Kansas City, MOPhoto: David Dods
  13. 13. Controlling Parking Lot Runoff Pine Ridge Presbyterian ChurchPhoto: David Dods
  14. 14. Urban Street Edges - Kansas City Keeping Water Out of Sewers to Reduce OverflowsPhoto: David Dods
  15. 15. Rain Water in Your Back Yard:Typical Home Drainage Problems When a rain garden can help, and when it can’t
  16. 16. Let’s Aim Our Downspouts at Each Other’s YardPhoto: David Dods
  17. 17. Are there any drainage issues here?Photo: David Dods
  18. 18. Same Yard, Different ViewsPhoto: David Dods
  19. 19. Most common causes of water in basements • Downspout drains right next to foundation • Foundation excavation has settled over time, creating a depression right next to house • Yard drains toward house Can a rain garden help? Extend downspout, grade yard to drain around house, place rain garden in side yard to catch drainagePhoto: David Dods
  20. 20. A Good Place for a Raingarden? Maybe. If a little water ponds here, but not for long periods of time, a rain garden may work. Need to pick plants carefully depending on how long water sits here. It is usually better to place rain gardens uphill of the ponding area – catch the water where it originates, not at the bottom of the hill.Photo: Rusty Schmidt, Waterdrop Innovations
  21. 21. Can You Do Anything Here? Probably can’t manage this much water, especially if drainage area is large. But a rain garden may help the yard somewhat.Photo: Rusty Schmidt, Waterdrop Innovations
  22. 22. Rain Garden Plants Along the Edge Where Water Collects in Yard Will need to pick plants carefully, depending on how much water stands here.Photo: Rusty Schmidt, Waterdrop Innovations
  23. 23. Yikes ! Half the Neighborhood Drains to My Yard A rain garden alone won’t solve this. Drainage from many yards is running downhill to this yard. This needs a yard drain or creek bed around the house. A rain garden may help dry up the yard around the drain inlet or outlet.Photo: Jessi Veach, URS
  24. 24. Rain Garden ConstructionPhoto: Rusty Schmidt
  25. 25. Locating the Garden Locations: Near downspouts, driveways, sump pump outlets. Stay 10 – 20 ft away from buildings +/-. Use judgment. Farther if you have an old basement foundation, closer OK if no basement.Photo: David Dods
  26. 26. Places to Avoid Utility Lines Septic Systems Uphill of Buildings: Don’t soak water into ground uphill of house Lots of utility Behind Retaining Walls if lines in side Not Designed for Water yardPhoto: David Dods
  27. 27. Inspect & Test Your Soil Inspect site soils Dig a hole. Look for soil type, fill material, compaction Conduct a percolation testPhoto: David Dods
  28. 28. Percolation Test Measure how much water soaks into the ground over 24 hoursIllustration:Marjorie Vigoren, City of Plymouth, MNSource: The Blue Thumb Guide to Raingardens,by Schmidt, Shaw, & Dods. Copyrighted.
  29. 29. Select Garden Depth so That Water Soaks Away in One Day • Large plant selection available • No mosquitoes • Tolerates spring rains & summer droughtIllustration: Dan Shaw, Waterdrop Innovations
  30. 30. Sizing the Garden For residential yards, the bed depth is more important than the area. Make sure it drains in a day. Average size: about 6’ x 8’ near one downspout Fit it to your landscaping Book has detailed sizing instructionsPhoto: David Dods
  31. 31. Preparing the Garden Bed • Remove Sod • Dig out bowl shape • Double-dig compacted clay to help plant root penetration • Add 2-3” compost • Till or dig in • Rake to shape Put as much effort into preparing the soil as you do selecting plants. Healthy soil grows healthy plants.Photos: Rusty Schmidt, Carla Dods
  32. 32. Shape & Depth of the Garden Dig out center to create shallow bowl. Use soil to create berm.Illustrations: Dan Shaw, Waterdrop Innovations LLC. From The Blue Thumb Guide to Raingardens. Copyrighted.
  33. 33. Minnetonka near Shady Oak LakePhoto courtesy of Washington Conservation District
  34. 34. Test Infiltration Before Planting the GardenPhoto: Rusty Schmidt
  35. 35. Planting Include Cute Kids for PhotosPhoto: Lynn Hinkle
  36. 36. Selecting Plants for Rain GardensPhoto: Andy Dandino, Mid-America Regional Council (MARC)
  37. 37. Deep Roots Improve Soil, Improve Infiltration, Survive Drought Turf Grass: tiny Native Grass: roots thick & deep rootsPhotos: David Dods
  38. 38. Really Deep RootsPhoto: David Dods Photo courtesy of Fred Rozumalski,Powell Gardens prairie restoraton Barr Engineering
  39. 39. The Right Plant in the Right Place Good Advice for Any Garden First Considerations for Rain Gardens: • Moisture Preferences • Soil Type and DrainagePhoto: David Dods
  40. 40. Rain Gardens are not Wetlands or Water Gardens Water should soak away in 1 day Garden dries out between rainsPhoto: David Dods
  41. 41. Rain Garden Planting Zones and Moisture Preferences Edges: Dry Sides: Average Bottom: Moist to WetIllustration: Dan Shaw, Waterdrop InnovationsSource: The Blue Thumb Guide to Raingardens. Copyrighted.
  42. 42. Rain Garden Planting Zones Center bottom is wetter longer; Edge dries out quicklyPhoto: David Dods
  43. 43. Garden Bottom if Soil is Poorly Drained and Moist to Wet Sedges & Rushes: Some species tolerate wet and dry Palm Sedge Soft Rush Carex Muskingumensis Juncus effususPhotos: David Dods
  44. 44. Garden Bottom if Soil is Well-Drained: Selected Grasses: Moisture tolerant species Switchgrass, ‘Shenandoah’ Switchgrass, ‘Northwind’Photos: 1) Missouri Botanical Garden, 2) David Dods
  45. 45. Garden Bottom: Flowers Some Wetland Edge & Floodplain Species Work Marsh Milkweed Southern Blue Flag IrisPhotos: David Dods
  46. 46. Garden Sides: Average to Dry Most of the Flowers Often Go Here Purple Coneflower Black-Eyed Susan Prairie Blazing Star I often use sedges, rushes, and grasses as the foundation plants in the bottom, then add color on the sides and edgesPhotos: David Dods
  47. 47. Garden Edges: Dry Lots of Beautiful ChoicesPhoto: David Dods,Location: Lady Bird Johnson Wildflower Center, Austin, TX
  48. 48. Additional Considerations: • Sun – Shade • Plant Size • Plant AggressivenessPhoto: David Dods
  49. 49. Sun Preferences Sun Shade Rain gardens work in shade. Fewer plant choices and color selections, but still some nice optionsPhotos: David Dods
  50. 50. Plant Size Tall and Sprawling vs. Compact example: New England Aster Native tolerates water and attracts butterflies, but is too large for many yards ‘Purple Dome’ cultivar of the native is similar, but smallerPhotos: David Dods
  51. 51. Plant Aggressiveness Switchgrass (native)Will it take over the garden and yard?Some plants are good for erosion control or habitat restoration, but not home gardens Prairie Cord Grass Obedient Plant River Oats http://www.lib.ksu.edu/wildflower Photo: Rusty Schmidt Photos: David Dods
  52. 52. Trees & Shrubs Shade & Energy Savings Witch Hazel Black Gum Bald CypressPhotos: David Dods
  53. 53. Plant Material Choices (Olathe North High School Rain Garden Workshop) Pots: Establish fast, More expensive Plugs: Cost effective for larger areas Seed: I never use for rain gardens. Takes too long to establishPhoto: David Dods
  54. 54. Mulch Use Coarse, Double- Shredded Hardwood Pinebark Nuggets & Cedar Chips FloatPhotos: David Dods
  55. 55. Getting Water to the Garden Downspout Extensions
  56. 56. Creek Bed Creek Bed Through Sidewalk Photos: Rusty Schmidt
  57. 57. Outlets Make sure the water overflows where you want it to go during large storms Protect against erosion if water flows over a bermPhotos: David Dods
  58. 58. Finishing Touches Make the Garden Look Deliberate Inlet Splash Blocks Edging Accents OutletPhoto: David Dods
  59. 59. Care & Maintenance First Growing Season • Limit standing water while plants are small • Water during dry periods • Pull weedsPhotograph: Rusty Schmidt, Waterdrop Innovations
  60. 60. Example Garden Construction Existing Garden BedPhotos Courtesy of: Shawn Tracy
  61. 61. Overflow (overland) depression bermPhotos: Shawn Tracy
  62. 62. Depression(w/ compost) Berm (w/ erosion control blanket) Photo: Shawn Tracy
  63. 63. Overflow point Depression BermPhotos: Shawn Tracy
  64. 64. Photos: Shawn Tracy
  65. 65. Questions ?Photo: David Dods
  66. 66. David Dods’ Contact Information Day Job: Environmental Engineer URS Corp. 8300 College Blvd., Suite 200 Overland Park, Kansas 66210 david.dods@urs.com 913.344.1022 In my Spare Time: Co-author, The Blue Thumb Guide to Raingardens Published by Waterdrop Innovations Available at www.Terracehorticulturalbooks.com www.Amazon.com email: raingardens@yahoo.comPhoto: David Dods