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Rain Gardens A beautiful choice for stormwater

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Rain Gardens A beautiful choice for stormwater Stormwater Division Water Quality Douglas County Extension West Rain Garden Douglas County Extension West Rain Garden ... – PowerPoint PPT presentation

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Title: Rain Gardens A beautiful choice for stormwater


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
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10
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11
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12
Pollutants In Our Stormwater Pet
Waste Sediment Fertilizers and Lawn
Chemicals Detergents and Paint Yard Waste Motor
Oil and Antifreeze
13
  • -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.

14
  • 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.

15
  • Site Selection
  • How large
  • Foundation
  • Property lines
  • Downspouts
  • Overflow
  • Location of trees
  • Locate utilities

16
Urban
  • Design Plant Selection
  • Front or back yard
  • Formal or natural
  • Full sun or shade
  • Native plants, shrubs, grasses
  • Wet and dry conditions

Natural
17
SWAN Rain Garden 320 Industrial Lane
18
Design Plant species Number of plants needed
19
  • Construction
  • 2-8 inches deep
  • Flat bottom
  • Man or machinery
  • Amend poor soils

Source Rain Gardens A how-to manual for
homeowners
20
  • Planting
  • Zones
  • Plant placement - height
  • Defined edge
  • Mulch

21
  • Connect downspout underground or with a grass or
    rock lined swale.

22
Protect inflow from scouring and erosion.
23
  • First Growing Season

24
  • Maintenance
  • Do not fertilize
  • Limit soil/debris
  • Remove weeds no herbicides
  • Water 1st year
  • Limit compaction

25
  • Downspout Rain Garden

26
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27
Visitation Church 5141 Main, Kansas City
28
Douglas County ExtensionWest Rain Garden
BEFORE
29
Douglas County ExtensionWest Rain Garden
AFTER
30
Douglas County ExtensionEast Rain Garden
BEFORE
31
Douglas County ExtensionEast Rain Garden
AFTER
32
Douglas County ExtensionEast Rain Garden
AFTER AFTER
33
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34
Rose Turtlehead
Cardinal Flower
Marsh Milkweed
Butterfly Milkweed
Prairie Coreopsis
New England Aster
Sideoats Grama
Prairie Blazing Star
Golden Alexanders
Blue Lobelia
Culvers Root
Franks Sedge
Blue Flag Iris
Little Bluestem
Yellow Coneflower
35
Daylily Garden
Source City of Maplewood, MN
36
Shrub Garden
Source City of Maplewood, MN
37
Prairie Garden
Source City of Maplewood, MN
38
Butterfly Garden
Source City of Maplewood, MN
39
Shade Garden
Source City of Maplewood, MN
40
Sunny Border Garden
Source City of Maplewood, MN
41
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