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<div class="mainpage_pagetitle">'''LOW IMPACT DEVELOPMENT STORMWATER MANAGEMENT PLANNING AND DESIGN GUIDE'''
 
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<h3 Class="title-black"><strong><center>Welcome to the Low Impact Development Stormwater Management Practice Planning and Design Guide</center></strong></h3>
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<p>The Low Impact Development Stormwater Management Planning and Design Guide
(LID SWM Guide) has been developed by Credit Valley Conservation (CVC) and
Toronto and Region Conservation Authority (TRCA) as a tool to help developers,
consultants, municipalities and landowners understand and implement more sustainable
stormwater management planning and design practices in their watersheds. Many
jurisdictions have defined the term low impact development. For this document, the
following definition, adapted from the United States Environmental Protection Agency
(U.S. EPA, 2007) will be used:
 
{{TextBox|1=Low impact development (LID) is a stormwater management strategy that seeks to mitigate the impacts of increased runoff and stormwater pollution by managing runoff as close to its source as possible. LID comprises a set of site design strategies that minimize runoff and distributed, small scale structural practices that mimic natural or predevelopment hydrology through the processes of infiltration, evapotranspiration, harvesting, filtration and detention of stormwater. These practices can effectively remove nutrients, pathogens and metals from runoff, and they reduce the volume and intensity of stormwater flows.}}</p>
[[Read more|Definitions]]
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<h4 class="subtitle-black">CONTENTS</h4>
We have many more articles. If you don't see what you're looking for, please check the '''[[Table of contents|contents]]''' page or use the search bar
</div>
<gallery mode="packed-overlay" heights=170px>
<div class="col-md-12">
File:Factsheet LIDBMPS.png|[[LID BMP Fact Sheets]]|link= LID BMP Fact Sheets
<div class="toccolours mw-collapsible mw-collapsed">
Community planning.jpg|[[Better site design]]|link=Better site design
<strong><i class="fa fa-bars" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;INTRODUCTION TO THE LOW IMPACT DEVELOPMENT PLANNING AND DESIGN GUIDE</strong>
O connor Park Bioretention.JPG|[[Bioretention|Bioretention]]|link=Bioretention
<div class="mw-collapsible-content">           
calculator.jpg|[[Cost analysis resources]]|link=Cost analysis resources
[[About this Document|<font color="#44A755"><strong>About this Document</strong>]]</font><br>
Curb inlet grade.jpg|[[Curb cuts|Curb inlets]]|link=Curb cuts
[[Acknowledgements|<font color="#565656">&nbsp;&nbsp;&nbsp;Acknowledgements]]</font><br>
YorkU1.jpg|[[Green roofs]]|link=Green roofs
[[Definition of Low Impact Development|<font color="#565656">&nbsp;&nbsp;&nbsp;Definition of Low Impact Development]]</font><br>
Image from StormTech.jpg|[[Infiltration chambers|Infiltration Chambers]]|link=Infiltration chambers
[[Ontario Stormwater Management Manuals and Guides|<font color="#44A755"><strong>Ontario Stormwater Management Manuals and Guides</strong>]]</font><br>
Infiltration Testing 2.jpeg |[[Design infiltration rate|Infiltration testing]]|link=Design infiltration rate
[[Ontario Legislative Framework Related to Stormwater Management|<font color="#44A755"><strong>Ontario Legislative Framework Related to Stormwater Management</strong>]]</font><br>
Clogged pipe.JPG|[[Inspections and Maintenance]]|link=Inspections and maintenance
[[The Evolution of Stormwater Management in Ontario|<font color="#44A755"><strong>The Evolution of Stormwater Management in Ontario</strong>]]</font><br>
LIDTTT.png|[[Low impact development treatment train tool|Low Impact Development Treatment Train Tool]]|link=Low impact development treatment train tool
[[Principles of Low Impact Development|<font color="#44A755"><strong>Principles of Low Impact Development</strong>]]</font><br> </div>
PaveDrain.jpg|[[Permeable pavements|Permeable pavements]]|link=Permeable pavements
Green raindrops (2650764957).jpg|[[Plants]]|link=Plants
Site Conditions Road Right of Way Cover.jpg|[[Screening LID options|Site assessment]]|link=Screening LID options
LSRCA planters.jpg|[[Stormwater planters|Stormwater planters]]|link=Stormwater planters
TRCA YorkU grass swale 3.jpg|[[Swales]]|link=swales
Pipe with connector.jpg|[[Underdrains|Underdrains]]|link=Underdrains
Snow piles.jpg|[[Winter|Winter]]|link=Winter
File:Central Parkway - soil cell, stormwater planter.JPG|[[Stormwater Tree Trenches]]|link=Stormwater Tree Trenches
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'''Welcome user! We have been looking forward to your arrival.'''


<div class="toccolours mw-collapsible mw-collapsed">
In anticipation we have prepared a short printable form to help direct your critique of the wiki.
<strong><i class="fa fa-bars" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;INTEGRATING STORMWATER MANAGEMENT INTO THE PLANNING PROCESS</strong>
<div class="mw-collapsible-content">
[[Overview of Integrating Stormwater Management Into the Planning Process|<font color="#44A755"><strong>Overview of Integrating Stormwater Management Into the Planning Process</strong>]]</font><br>
[[Landscape-based Stormwater Management Planning Process and Team|<font color="#565656">&nbsp;&nbsp;&nbsp;Landscape-based Stormwater Management Planning Process and Team]]</font><br>
[[Environmental, Land Use and Stormwater Management Planning|<font color="#565656"><em>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Environmental, Land Use and Stormwater Management Planning</em>]]</font><br>
[[Integrating Stormwater Infrastructure Into the Urban Fabric and the Landscape|<font color="#44A755"><strong>Integrating Stormwater Infrastructure Into the Urban Fabric and the Landscape</strong>]]</font><br>
[[Landscape-based SWM Planning and Design Principles|<font color="#565656">&nbsp;&nbsp;&nbsp;Landscape-based SWM Planning and Design Principles]]</font><br>
[[Landscape-based stromwater planning in accord with site geologic context|<font color="#565656">&nbsp;&nbsp;&nbsp;Landscape-based stromwater planning in accord with site geologic context]]</font><br>
[[Landscape-based Stormwater Management Planning at Different Scales|<font color="#565656">&nbsp;&nbsp;&nbsp;Landscape-based Stormwater Management Planning at Different Scales]]</font><br>
[[Stormwater Management Opportunities at the Community Scale|<font color="#565656"><em>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Stormwater Management Opportunities at the Community Scale</em>]]</font><br>
[[Stormwater Management Opportunities at the Neighbourhood Scale|<font color="#565656"><em>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Stormwater Management Opportunities at the Neighbourhood Scale</em>]]</font><br>
[[Stormwater Management Opportunities at the Site Scale|<font color="#565656"><em>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Stormwater Management Opportunities at the Site Scale</em>]]</font><br>
[[Stormwater Management Opportunities for Infill and Redevelopment Sites|<font color="#565656"><em>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Stormwater Management Opportunities for Infill and Redevelopment Sites</em>]]</font><br>
[[Treatment Train Approach to Stormwater Management System Design|<font color="#44A755"><strong>Treatment Train Approach to Stormwater Management System Design</strong>]]</font><br>
[[Influence of Stormwater Source Area on Treatment Train Design|<font color="#44A755"><strong>Influence of Stormwater Source Area on Treatment Train Design</strong>]]</font><br> </div>
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<strong><i class="fa fa-bars" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;URBANIZATION, CLIMATE CHANGE AND THE LOW IMPACT DEVELOPMENT APPROACH</strong>
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[[Principles of Low Impact Development|<font color="#44A755"><strong>Principles of Low Impact Development</strong>]]</font><br>
[[The Impact of Urbanization and CC and how Low Impact Development can Help|<font color="#44A755"><strong>The Impact of Urbanization and CC and how Low Impact Development can Help (Interdisciplinary section)</strong>]]</font><br>
[[Flooding and Stream Flows|<font color="#565656">&nbsp;&nbsp;&nbsp;Flooding and Stream Flows]]</font><br>
[[Environmental Flows|<font color="#565656"><em>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Environmental Flows</em>]]</font><br>
[[Erosion and Sedimentation (Geomorphology)|<font color="#565656">&nbsp;&nbsp;&nbsp;Erosion and Sedimentation (Geomorphology)]]</font><br>
[[Surface and Groundwater Water Quality|<font color="#565656">&nbsp;&nbsp;&nbsp;Surface and Groundwater Water Quality]]</font><br>
[[Aquatic Habitats (incl. thermal impacts)|<font color="#565656">&nbsp;&nbsp;&nbsp;Aquatic Habitats (incl. thermal impacts)]]</font><br>
[[Terrestrial|<font color="#565656">&nbsp;&nbsp;&nbsp;Terrestrial]]</font><br>
[[Hydrogeology|<font color="#565656">&nbsp;&nbsp;&nbsp;Hydrodeology]]</font><br>
[[Climate Change|<font color="#565656">&nbsp;&nbsp;&nbsp;Climate Change]]</font><br>
[[Landscape and Recreation|<font color="#565656">&nbsp;&nbsp;&nbsp;Landscape and Recreation]]</font><br>
[[Climate Change Resiliency through Stormwater Management|<font color="#44A755"><strong>Climate Change Resiliency through Stormwater Management</strong>]]</font><br>
[[Climate Change in Ontario|<font color="#565656">&nbsp;&nbsp;&nbsp;Climate Change in Ontario]]</font><br>
[[Anticipated Impacts of Climate Change in Ontario|<font color="#565656">&nbsp;&nbsp;&nbsp;Anticipated Impacts of Climate Change in Ontario]]</font><br>
[[Enhancing Climate Change Resiliency With LID|<font color="#565656">&nbsp;&nbsp;&nbsp;Enhancing Climate Change Resiliency With LID]]</font><br>
[[Examples of LID Strategies to Enhance Climate Change Resiliency|<font color="#565656">&nbsp;&nbsp;&nbsp;Examples of LID Strategies to Enhance Climate Change Resiliency]]</font><br>
[[Factoring Predicted Climate Change into Stormwater Infrastructure Design|<font color="#565656">&nbsp;&nbsp;&nbsp;Factoring Predicted Climate Change into Stormwater Infrastructure Design]]</font><br>
[[Low Impact Development Site Design Strategies|<font color="#44A755"><strong>Low Impact Development Site Design Strategies</strong>]]</font><br>
[[Adapting Structural Low Impact Development Practices for Ontario|<font color="#44A755"><strong>Adapting Structural Low Impact Development Practices for Ontario</strong>]]</font><br>
[[Cold Climates|<font color="#565656">&nbsp;&nbsp;&nbsp;Cold Climates]]</font><br>
[[Low permeability soils|<font color="#565656">&nbsp;&nbsp;&nbsp;Low permeability soils]]</font><br>
[[High density development|<font color="#565656">&nbsp;&nbsp;&nbsp;High density development]]</font><br>
[[The Low Impact Development Design Process|<font color="#44A755"><strong>The Low Impact Development Design Process (Screening Section)</strong>]]</font><br>
[[Design Principles for Flood Control|<font color="#565656">&nbsp;&nbsp;&nbsp;Design Principles for Flood Control]]</font><br>
[[Design Principles for Nutrient Management|<font color="#565656">&nbsp;&nbsp;&nbsp;Design Principles for Nutrient Management]]</font><br>
[[Modelling Treatment Train|<font color="#565656">&nbsp;&nbsp;&nbsp;Modelling Treatment Train]]</font><br>[[Costs and Benefits of Low Impact Development Approaches|<font color="#44A755"><strong>Costs and Benefits of Low Impact Development Approaches</strong>]]</font><br> </div>
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<strong><i class="fa fa-bars" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;DESIGN OF STRUCTURAL LOW IMPACT DEVELOPMENT PRACTICES FOR STORMWATER MANAGEMENT</strong>
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[[Bioretention|<font color="#44A755"><strong>Bioretention</strong>]]</font><br>
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[[Bioretention Overview|<font color="#565656">&nbsp;&nbsp;&nbsp;Overview]]</font><br>
[[Bioretention Design Guidance|<font color="#565656">&nbsp;&nbsp;&nbsp;Design Guidance]]</font><br>
[[Bioretention BMP Sizing|<font color="#565656">&nbsp;&nbsp;&nbsp;BMP Sizing]]</font><br>
[[Bioretention Design Specifications|<font color="#565656">&nbsp;&nbsp;&nbsp;Design Specifications]]</font><br>
[[Bioretention Construction Considerations|<font color="#565656">&nbsp;&nbsp;&nbsp;Construction Considerations]]</font><br>
[[Bioretention Inspection and Maintenance Needs|<font color="#565656">&nbsp;&nbsp;&nbsp;Inspection and Maintenance Needs]]</font><br>
[[Bioretention Life Cycle Costs|<font color="#565656">&nbsp;&nbsp;&nbsp;Life Cycle Costs]]</font><br>
[[Bioretention Case Studies|<font color="#565656">&nbsp;&nbsp;&nbsp;Case Studies]]</font><br>
[[Bioretention Typical Design Drawings|<font color="#565656">&nbsp;&nbsp;&nbsp;Typical Design Drawings]]</font><br>
[[Bioretention Supporting Material and External Resources|<font color="#565656">&nbsp;&nbsp;&nbsp;Supporting Material and External Resources]]</font><br>
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[[Service Two|<font color="#44A755"><strong>Service Two</strong>]]</font><br> </div>
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<div class="toccolours mw-collapsible mw-collapsed">
<strong><i class="fa fa-bars" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;MONITORING OF STORMWATER MANAGEMENT PRACTICES</strong>
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[[Monitoring|<font color="#44A755"><strong>Monitoring</strong>]]</font><br>
[[Compliance Monitoring|<font color="#565656">&nbsp;&nbsp;&nbsp;Compliance Monitoring]]</font><br>
[[Performance Monitoring|<font color="#565656">&nbsp;&nbsp;&nbsp;Performance Monitoring]]</font><br>
[[Environmental Effects Monitoring|<font color="#565656">&nbsp;&nbsp;&nbsp;Environmental Effects Monitoring]]</font><br>
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{{Clickable button|[[Media:Comments.pdf|Download pdf feedback form]]}}
<div class="toccolours mw-collapsible mw-collapsed">
<strong><i class="fa fa-bars" aria-hidden="true"></i>&nbsp;&nbsp;&nbsp;TOOLS</strong>&nbsp;&nbsp;&nbsp;
<div class="mw-collapsible-content">
[[Life Cycle Costing Tool|<font color="#44A755"><strong>Life Cycle Costing Tool</strong>]]</font><br>
[[Planting Guide Tool|<font color="#44A755"><strong>Planting Guide Tool</strong>]]</font><br> </div>
</div>


If you have a shorter comment or observation please use the anonymous feedback box at the bottom of every page.


  </div>
{{Clickable button|[[Table of Contents]]}}


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*[[Definition of Low Impact Development|What is low impact development?]]
<h4 class="subtitle-black">HOT TOPICS</h4>
*[[Photographs]]
</div>
*[[Wander_lonely_as_a_cloud|Browse random pages!]]
*[[Acknowledgements]]
*[[Updates|Subscribe to updates]]
*[[How to contribute| email us]]


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<h4Blue>Common concerns about groundwater interaction</h4Blue>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing dolor sit amet e.</p>
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<h4Blue>Infiltration on tight soils: it's possible!</h4Blue>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing dolor sit amet e.</p>
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<h4Blue>Water-loving perennials</h4Blue>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing dolor sit amet e.</p>
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<h4Blue>Budgeting for a BMP's life cycle</h4Blue>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing dolor sit amet e.</p>
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<h4Blue>Tendering for LIDs</h4Blue>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing dolor sit amet e.</p>
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<h4Blue>Maintaining BMPs</h4Blue>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing dolor sit amet e.</p>
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<h4 class="subtitle-black">BEST MANAGEMENT PRACTICES</h4>
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<h5>BIORETENTION</h5>
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<h5>PERMEABLE PAVEMENT</h5>
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<h5>UNDERGROUND INFILTRATION SYSTEMS</h5>
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<h5>[[Rainwater_Harvesting|RAINWATER HARVESTING]]</h5>
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<h5>ENHANCED GRASS SWALES</h5>
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<h5>ABSORBENT LANDSCAPES</h5>
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<h5>NON-STRUCTURAL BMPs</h5>
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LOW IMPACT DEVELOPMENT STORMWATER MANAGEMENT PLANNING AND DESIGN GUIDE

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