Overland Park KS Rain Garden Manual


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Overland Park KS Rain Garden Manual

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Overland Park KS Rain Garden Manual

  1. 1. How to Build a Rain Garden for Residential Yards Presented by: David Dods URS Overland Park, Kansas
  2. 2. How to Build a Rain Garden for Residential Yards 1. Locating the garden 2. Testing site soils & sizing the garden 3. Preparing the garden bed 4. Planting zones 5. Inlets & outlets 6. Finishing touchesPhoto: David Dods
  3. 3. Planting Beds - Two Approaches Using Native Soils (Preferred) With Engineered Soils and an UnderdrainIllustrations: Dan Shaw; Barr Engineering
  4. 4. Rain Garden Construction Using Native SoilsPhotos: David Dods; Rusty Schmidt
  5. 5. Locating the Garden • Downspouts • Driveways • Sump pump outlets • Drainageways • ~10 – 20 ft away from buildingsPhoto: David Dods, URS
  6. 6. Places to Avoid Utilities, Septic Systems Uphill of Buildings on Slopes Behind Structural Retaining Walls if Not Designed for Water/DrainagePhoto: David Dods
  7. 7. Testing Site Soils • Inspect site soils. Dig a hole. Look for soil type, fill material, compaction • Conduct a Percolation TestPhoto: David Dods, URS
  8. 8. Percolation Test How much water soaks in over 24 hours? Illustration: Marjorie Vigoren, City of Plymouth, MNSource: The Blue Thumb Guide to Raingardens,by Schmidt, Shaw, & Dods
  9. 9. Sizing the Garden • For residential yards, the bed depth is more important than the area • Average size: ~About 6’ x 8’ near one downspout • Fit it to your landscapingPhotograph: Rusty Schmidt
  10. 10. Preparing the Garden Bed • Rototill or double-dig • Over-dig clay soils • Amend with compostPhotos: Carla Dods; Rusty Schmidt
  11. 11. Shape & Depth of the Garden Pool DepthIllustration: Dan Shaw, Waterdrop Innovations LLC
  12. 12. Minnetonka near Shady Oak LakePhoto courtesy of Washington Conservation District
  13. 13. Bed is dug down Downhill edge is raised upPhotos: Shawn Tracy; David Dods
  14. 14. Rain Garden Planting Zones Edges: Dry Sides: Average Bottom: MoistIllustration: Dan Shaw, Waterdrop InnovationsSource: The Blue Thumb Guide to Raingardens, by Schmidt, Shaw, & Dods
  15. 15. Rain Gardens are not Wetlands or Water Gardens• Designed to Infiltrate Water in 1 – 1 ½ Day • Large plant selection • No mosquitoes • Tolerates spring rains & summer drought
  16. 16. Improving Infiltration: Its in the Roots Turf Grass Native Grass Root Depths Turf Grass: Inches Native Grasses & Wildflowers: FeetPhotos: David Dods, URS
  17. 17. Re-test Infiltration Before Planting the GardenPhotograph: Rusty Schmidt
  18. 18. Planting: Include Cute Kids for PhotosPhoto: Lynn Hinkle, Astra Communications
  19. 19. Mulch Use Coarse, Double- Shredded Hardwood Pinebark Nuggets & Cedar Chips FloatPhotos: David Dods
  20. 20. Getting Water to the Garden Downspout Extensions
  21. 21. Scupper Rain Chain Photos: Kurt Leuthold, Barr Engineering; Rusty Schmidt
  22. 22. Pipe Creek Bed Photos: Rusty Schmidt
  23. 23. Outlets Make sure the water overflowswhere you want itto go during large storms Photos: David Dods
  24. 24. Outlet at End of Berm Minnetonka near Shady Oak Lake
  25. 25. Outlet at End of Berm Minnetonka near Shady Oak Lake
  26. 26. Finishing Touches Make the Garden Look Deliberate Roy the Cat Inlet Splash Blocks Edging Accents OutletPhoto: David Dods
  27. 27. Borders and Edging: Make the Garden Look DeliberatePhotos: David Dods, URS; Barr Engineering
  28. 28. Care & Maintenance First Growing Season• Limit standing water while plants are small• Water during dry periods• Pull weeds Photograph: Rusty Schmidt, URS
  29. 29. Example Garden Existing Garden BedPhotos: Shawn Tracy
  30. 30. Overflow (overland) depression bermPhotos: Shawn Tracy
  31. 31. Depression(w/ compost) Berm (w/ erosion- control blanket) Photos: Shawn Tracy
  32. 32. Depression BermPhotos: Shawn Tracy
  33. 33. Photos: Shawn Tracy
  34. 34. Questions ? David Dods URS 8300 College Boulevard, Suite 200 Overland Park, Kansas 66210 913-344-1022 david_dods@urscorp.comPhoto: Washington Conservation District, Stillwater, MN