earth-wise guide to
Rain Gardens
What is a
rain garden?
A rain garden is a shallow, vegetated
depression designed to absorb and
filter runoff from hard (impervious)
surfaces like roofs, sidewalks, and
driveways.
Rain gardens are usually
planted with colorful native plants
and grasses.
They not only provide
an attractive addition to...
Plus
earth-wise guide to Rain Gardens What is a rain garden? A rain garden is a shallow, vegetated depression designed to absorb and filter runoff from hard (impervious) surfaces like roofs, sidewalks, and driveways. Rain gardens are usually planted with colorful native plants and grasses. They not only provide an attractive addition to the yard, but also help to conserve water and protect our water quality. How does a rain garden help? As Austin becomes increasingly urbanized, native landscapes are replaced with impervious surfaces that prevent rainwater from soaking into the ground. Stormwater quickly runs off these hard surfaces, picking up any pollutants from the land and carrying them to our creeks. This rapidly flowing water also increases the chances of flooding and erosion. The goal of a rain garden is to keep water on the land. Rain gardens, with their shallow depressions, capture stormwater and provide for natural infiltration into the soil. This provides water for the plants
Moins
Par Fokides Emmanuel
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10 feet wide;
full to partial
shade with clay
soils
Total Area:
70 sq.
ft.
Symbol Scientific Name Common Name Number
of plants
Ac Acorus calamus Sweet flag 5
Cp Caltha palustris Marsh marigold 7
Ca Campanuta americana Tall bellflower 6
Cxg Carex grayii Bur sedge 7
Cxl Carex lupulina Hop sedge 3
Iv Iris versicolor Blue flag 13
Lc...
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10 feet wide; full to partial shade with clay soils Total Area: 70 sq. ft. Symbol Scientific Name Common Name Number of plants Ac Acorus calamus Sweet flag 5 Cp Caltha palustris Marsh marigold 7 Ca Campanuta americana Tall bellflower 6 Cxg Carex grayii Bur sedge 7 Cxl Carex lupulina Hop sedge 3 Iv Iris versicolor Blue flag 13 Lc Lobelia cardinalis Cardinal flower 7 Mv Mertensia virginica Virginia bluebells 25 Os Onoclea sensibilis Sensitive fern 2 Total Plants Needed: 70 20 feet wide; full to partial shade with clay soils Symbol Scientific Name Common Name Number of plants Ac Acorus calamus Sweet flag 16 Cp Caltha palustris Marsh marigold 5 Ca Campanuta americana Tall bellflower 9 Cxg Carex grayii Bur sedge 9 Cxl Carex lupulina Hop sedge 15 Iv Iris versicolor Blue flag 121 Lc Lobelia cardinalis Cardinal flower 15 Mv Mertensia virginica Virginia bluebells 25 Os Onoclea sensibilis Sensitive fern 25 Total Plants Needed: 140 25
Moins
Par Fokides Emmanuel
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Lectures: 3
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Start-to-Finish
Rain Garden Design
A Workbook for Homeowners
Your Contact Information
Name __________________________________________________
Phone or E-mail _______________________________________
Address ________________________________________________
_________________________________________________________...
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Start-to-Finish Rain Garden Design A Workbook for Homeowners Your Contact Information Name __________________________________________________ Phone or E-mail _______________________________________ Address ________________________________________________ _________________________________________________________ _________________________________________________________
Moins
Par Fokides Emmanuel
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Publiée le 4 Mai 2011
Pages: 14
Lectures: 0
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Detailed design guidelines can be found in the Design
Guidelines 2005 report, available at www.
gvrd.
bc.
ca
Goya Ngan
Landscape Architect
DESIGN PRINCIPLES
■ Literature suggests rain garden areas
of about 10-20% of upstream
impervious area.
For GVRD, calculate
rain garden area by continuous flow
modelling.
Optimum rain garden...
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Detailed design guidelines can be found in the Design Guidelines 2005 report, available at www. gvrd. bc. ca Goya Ngan Landscape Architect DESIGN PRINCIPLES ■ Literature suggests rain garden areas of about 10-20% of upstream impervious area. For GVRD, calculate rain garden area by continuous flow modelling. Optimum rain garden size is about 50sq. m. draining 250sq. m. of impervious area. ■ Smaller, distributed rain gardens are better than single large scale facilities. ■ Locate rain gardens a minimum 30. 5m from wells, 3m downslope of building foundations, and only in areas where foundations have footing drains and are not above steep slopes. ■ Provide pretreatment and erosion control i. e. grass filter strip to avoid introducing sediment into the garden. ■ At point-source inlets, install non-erodable material, sediment cleanout basins, and weir flow spreaders. ■ Bottom width - 600mm (Min. ) to 3000mm (desirable). Length-width ratio of 2:1. ■ Side slopes - 2:1 maximum, 4:1
Moins
Par Fokides Emmanuel
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Publiée le 4 Mai 2011
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Lectures: 2
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City of Rock Island
RAIN GARDENS FOR ROCK ISLAND
Improving the Environment, One Garden at a Time
City of Rock Island
Rain Garden Facts:
· Rain gardens reduce flooding,
absorb pollutants, and sustain
wildlife.
· Rain gardens come in a number
of shapes and do not require
much space.
· A typical rain garden is only four
to eight...
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City of Rock Island RAIN GARDENS FOR ROCK ISLAND Improving the Environment, One Garden at a Time City of Rock Island Rain Garden Facts: · Rain gardens reduce flooding, absorb pollutants, and sustain wildlife. · Rain gardens come in a number of shapes and do not require much space. · A typical rain garden is only four to eight inches deep. · Many different types of perennials can be used but native plants are typically the better choice. · Before you dig, call JULIE at 1-800-892-0123. · The City will reimburse citizens based on the total square footage of the rain garden at the rate of $4. 00 per square foot. · If you are able to incorporate the use of a rain barrel into your rain garden, the City will supply one free of charge. City of Rock Island Public Works Department 1309 Mill Street Rock Island, IL 61201 309-732-2200 www. rigov. org What is a Rain Garden? Rain gardens are shallow depressions planted with perennial plants that are located near a downspout or an area that she
Moins
Par Fokides Emmanuel
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A PROGRAM
OF
NORTH CAROLINA COOPERATIVE EXTENSION
Par Fokides Emmanuel
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Lectures: 2
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The Native Plant Society of New Jersey
Office of Continuing Professional Education
Cook College 102 Ryders Lane New Brunswick, NJ 08901-8519
www.
npsnj.
org
Par Fokides Emmanuel
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Publiée le 4 Mai 2011
Pages: 24
Lectures: 1
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ReducingStormwaterImpacts inHeavily
DevelopedAreas; WinooskiRainGarden Project
Wi n o o s k i R a i n G a r d e n P r o j e c t
S e p t e m b e r
2 0 0 7
The Winooski Rain Garden project
was developed through a partnership between
UVM Extension Lake Champlain Sea Grant
program’s NEMO program and the city of
Winooski.
A study of the...
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ReducingStormwaterImpacts inHeavily DevelopedAreas; WinooskiRainGarden Project Wi n o o s k i R a i n G a r d e n P r o j e c t S e p t e m b e r 2 0 0 7 The Winooski Rain Garden project was developed through a partnership between UVM Extension Lake Champlain Sea Grant program’s NEMO program and the city of Winooski. A study of the Morehouse Brook found it to be severely impaired by stormwater inputs just below Mallets Bay Avenue. Winooski, a historic city that is heavily developed, has little area to build traditional engineered stormwater facilities. In the process of looking for an alternative way to reduce the stormwater inputs to the Morehouse Brook, the rain garden project was developed to demonstrate to residence and business owners the low cost and low maintenance practice to manage their stormwater runoff. Rain gardens originate from the stormwater practice called bio-infiltration or bio-retention. This practice mimics an upland forest’s natural functions of interception,
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Par Fokides Emmanuel
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Rain Gardens
Illustration by
Doug Adamson,
RDG Planning & Design
Iowa Rain Garden
Design and Installation Manual
Par Fokides Emmanuel
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Publiée le 4 Mai 2011
Pages: 32
Lectures: 12
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RAIN
GARDENSA RAIN GARDEN MANUAL FOR SOUTH CAROLINA
As development increases, so
does the area of impervious
surface.
Impervious surfaces
include roadways, rooftops,
parking lots and sidewalks.
Without planning and appropriate management, water that
runs over these surfaces picks
up pollutants along the way
and carries them directly...
Plus
RAIN GARDENSA RAIN GARDEN MANUAL FOR SOUTH CAROLINA As development increases, so does the area of impervious surface. Impervious surfaces include roadways, rooftops, parking lots and sidewalks. Without planning and appropriate management, water that runs over these surfaces picks up pollutants along the way and carries them directly to our lakes, rivers and estuaries. These pollutants include bacteria, nutrients, litter, sediment, oils and metals. Water that heats up on parking lots and roadways also can lead to warmer than normal water entering nearby waterways. This runoff, called “stormwater,” is generated by precipitation, snow melt and irrigation water that runs off the land. Stormwater is the greatest threat to our nation’s surface waters. As well as creating hard surfaces where pollutants can be washed into waterways, impervious surfaces also prevent the natural infiltration process that occursinforests,fieldsandopen areas. Instead of adding to the groundwater supply, st
Moins
Par Fokides Emmanuel
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Publiée le 4 Mai 2011
Pages: 16
Lectures: 2
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