Rain Gardens A beautiful choice for stormwater - PowerPoint PPT Presentation

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Rain Gardens A beautiful choice for stormwater

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  1. Rain GardensA beautiful choice for stormwater Stormwater Division

  2. Stormwater Runoff

  3. Water Quality Water Quantity

  4. Kansas River Wakarusa River

  5. 19th Century Lawrence

  6. 20th Century Lawrence

  7. 21st Century Lawrence

  8. Increased Runoff Flooding Pollution

  9. Pollutants In Our Stormwater Pet Waste Sediment Fertilizers and Lawn Chemicals Detergents and Paint Yard Waste Motor Oil and Antifreeze

  10. -Rain Garden- • Collects runoff from roof and yard, keeping it out of stormwater drainage system. • Allows pollutants to be filtered out and decreases localized flooding.

  11. Unlike bog or wetland gardens, Rain Gardens hold water for only 1 to 2 days. • Compared to a conventional lawn, a Rain Garden can allow 30% more water to soak into the ground. Rain Gardens are also wonderful habitat for wildlife and can be an attractive asset to any property.

  12. Site Selection • How large • Foundation • Property lines • Downspouts • Overflow • Location of trees • Locate utilities

  13. Urban • Design & Plant Selection • Front or back yard • Formal or natural • Full sun or shade • Native plants, shrubs, grasses • Wet and dry conditions Natural

  14. SWAN Rain Garden 320 Industrial Lane

  15. Design Plant species Number of plants needed

  16. Construction • 2-8 inches deep • Flat bottom • Man or machinery • Amend poor soils Source: Rain Gardens – A how-to manual for homeowners

  17. Planting • Zones • Plant placement - height • Defined edge • Mulch

  18. Connect downspout underground or with a grass or rock lined swale.

  19. Protect inflow from scouring and erosion.

  20. First Growing Season

  21. Maintenance • Do not fertilize • Limit soil/debris • Remove weeds – no herbicides • Water 1st year • Limit compaction

  22. Downspout Rain Garden

  23. Visitation Church 5141 Main, Kansas City

  24. Douglas County ExtensionWest Rain Garden BEFORE

  25. Douglas County ExtensionWest Rain Garden AFTER

  26. Douglas County ExtensionEast Rain Garden BEFORE

  27. Douglas County ExtensionEast Rain Garden AFTER

  28. Douglas County ExtensionEast Rain Garden AFTER AFTER

  29. Rose Turtlehead Cardinal Flower Marsh Milkweed Butterfly Milkweed Prairie Coreopsis New England Aster Sideoats Grama Prairie Blazing Star Blue Lobelia Golden Alexanders Culver’s Root Little Bluestem Yellow Coneflower Frank’s Sedge Blue Flag Iris

  30. Daylily Garden Source: City of Maplewood, MN

  31. Shrub Garden Source: City of Maplewood, MN

  32. Prairie Garden Source: City of Maplewood, MN

  33. Butterfly Garden Source: City of Maplewood, MN

  34. Shade Garden Source: City of Maplewood, MN

  35. Sunny Border Garden Source: City of Maplewood, MN

  36. Questions?