Changes

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=Planning Considerations=

===Planning Considerations===

==Watershed scale==

<h4>Watershed scale</h4>

Traditional rain barrels require a high degree of owner compliance to perform as a reliable stormwater management control strategy at watershed scale. To overcome this limitation, electronically monitored and controlled rain barrels are  a new adaptation on the market in Ontario[https://www.raingrid.com/]. This system forecasts rain and automatically discharges the contents of the rain barrel to a designated infiltration area of the property in advance of the storm.   

Traditional rain barrels require a high degree of owner compliance to perform as a reliable stormwater management control strategy at watershed scale. To overcome this limitation, electronically monitored and controlled rain barrels are  a new adaptation on the market in Ontario[https://www.raingrid.com/]. This system forecasts rain and automatically discharges the contents of the rain barrel to a designated infiltration area of the property in advance of the storm.   

==Site Scale==

<h4>Site Scale</h4>

===Place in the Treatment Train===

<h5>Place in the Treatment Train</h5>

In most cases the catchment area will be the roof of the building and the rain barrel will be the first interception of water from the downspout.<br>

In most cases the catchment area will be the roof of the building and the rain barrel will be the first interception of water from the downspout.<br>

How many downspouts does the roof have?  Will more than one barrel be required? Do the downspouts require reconfiguration?

How many downspouts does the roof have?  Will more than one barrel be required? Do the downspouts require reconfiguration?

===Cistern===

 

<h4>Cistern</h4>

Expansion caused by freezing water will damage the barrel. The easiest way to prevent this damage is to  drain and disconnect the system in advance of [[Winter|sub-zero temperatures]][http://climate.weather.gc.ca/climate_normals/].

Expansion caused by freezing water will damage the barrel. The easiest way to prevent this damage is to  drain and disconnect the system in advance of [[Winter|sub-zero temperatures]][http://climate.weather.gc.ca/climate_normals/].

It is recommended that an overflow strategy be part of designing a rain barrel system. Excess water should be directed away from the property foundations. Suitable discharge points for overflow include: a [[rain garden]], a [[french drain]], or the base of a [[tree]].

It is recommended that an overflow strategy be part of designing a rain barrel system. Excess water should be directed away from the property foundations. Suitable discharge points for overflow include: a [[rain garden]], a [[french drain]], or the base of a [[tree]].

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=Design=

===Design===

==Filter==

<h4>Filter</h4>

[[File:Leaf Screens.jpg|right|300px|border|caption]]

[[File:Leaf Screens.jpg|right|300px|border|caption]]

The water in the barrel will remain fresher for use if leave litter is excluded. Leaves can be filtered out by a screen on top of the cistern, or by using a device fitted into the downspout.

The water in the barrel will remain fresher for use if leave litter is excluded. Leaves can be filtered out by a screen on top of the cistern, or by using a device fitted into the downspout.

==Sizing and Cisterns==

<h4>Sizing Barrels</h4>

Roof catchment area can be estimated using one of many online digital maps. e.g. Distance can be measured on Google maps by right clicking on the desired start point. <br>

Roof catchment area can be estimated using one of many online digital maps. e.g. Distance can be measured on Google maps by right clicking on the desired start point. <br>

1 mm of rain landing on 1 m² of roof top  produces 1 litre of water to store. <br> So a 5 mm storm on a 75 m² roof would require 375 L of storage volume. <br>

1 mm of rain landing on 1 m² of roof top  produces 1 litre of water to store. <br> So a 5 mm storm on a 75 m² roof would require 375 L of storage volume. <br>

Rain barrels or cisterns are readily available in pre-formed plastic up to around 500L. <br>  

Rain barrels or cisterns are readily available in pre-formed plastic up to around 500L. <br>  

Alternatives include:  

Alternatives include:  

*modular systems to increase total storage capacity,  

*slim designs to fit small spaces,

<li>modular systems to increase total storage capacity, </li>

*aesthetic designs for high profile locations,  

<li>slim designs to fit small spaces, </li>

Many people choose to reuse or recycle a container as a rain barrel or cistern. Repurposed containers should be screened to prevent [[mosquitoes]] from breeding, and should be opaque to prevent algae from growing.  

<li>aesthetic designs for high profile locations, </li>

Many people choose to reuse or recycle a container as a rain barrel or cistern. Re-purposed containers should be screened to prevent [[mosquitoes]] from breeding, and should be opaque to prevent algae from growing.  

 

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===Performance===

=Performance=

<strong>CSA STANDARD !!!</strong>

<strong>CSA STANDARD !!!</strong>

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=Incentives and Credits=

===Incentives and Credits===

Region of Peel offers rain barrels for sale at their Community Recycling Centres[http://www.peelregion.ca/watersmartpeel/residents/rainbarrels.htm].  

Region of Peel offers rain barrels for sale at their Community Recycling Centres[http://www.peelregion.ca/watersmartpeel/residents/rainbarrels.htm].  

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=See Also=

===See Also===

*[[Rain gardens]]

*[[Rain gardens]]

*[[Downspout disconnection]]

*[[Downspout disconnection]]

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=References=

===References===

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=External Links=

===External Links===