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→Planning considerations
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File:Dry pond-labelled update.png|thumb|700 px|The following image showcases an extended detention dry pond. For more details click [https://dr6j45jk9xcmk.cloudfront.net/documents/1757/195-stormwater-planning-and-design-en.pdf here.]<ref> Ministry of the Environment. Stormwater Management Planning and Design Manual. https://dr6j45jk9xcmk.cloudfront.net/documents/1757/195-stormwater-planning-and-design-en.pdf. 2003. Accessed 3 September, 2021</ref>. <span style="color:red">''A note: The following is an "image map", feel free to explore the image with your cursor and click on highlighted labels that appear to take you to corresponding pages on the Wiki.''</span>
rect 704 662 1517 837 [[Pretreatment features| Sediment Forebays]]
rect 165 1106 458 1269 [[Inlets| Inlet]]
rect 676 1673 930 1761 [[Inlets| Inlet]]
rect 34 1630 434 1987 [[Stone| Stone Erosion Control]]
rect 934 1661 1065 1848 [[Stone| Stone Erosion Control]]
rect 1879 1479 2474 1626 [[Berms| Forebay Berms]]
rect 2664 1535 2958 1689 [[Berms| Berms]]
rect 1514 349 2406 599 [[Plant lists| Vegetation]]
rect 2648 4 3565 178 [[Flow Control| Outlet]]
rect 3815 325 4072 539 [[Flow Control| Outlet]]
rect 3826 611 3886 480 [[Pipes| Outlet Pipe]]
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[[File:Dryponds map.PNG|thumb|link=https://goo.gl/68Ewnz|Click here to see map of Dry Ponds in Scarborough and surroundings]]
[[File:Dryponds map.PNG|thumb|link=https://goo.gl/68Ewnz|Click here to see map of Dry Ponds in Scarborough and surroundings]]
See also [[Water squares]]
See also [[Water squares]]
Dry ponds are a useful tool for managing flooding during larger storm events. They are well suited to being placed downstream of other smaller distributed BMPs for occasional backup flood protection.
Dry ponds are a useful tool for managing flooding during larger storm events. They are well suited to being placed downstream of other smaller distributed BMPs for occasional backup flood protection.
Where possible they should be integrated into amenity space, given that users rarely wish to continue outdoor activities during such intense rainstorms.
Where possible they should be integrated into amenity space, given that users rarely wish to continue outdoor activities during such intense rainstorms.
Compared to wet ponds “Dry ponds… …are less expensive to install, require less maintenance and may involve less liability for the communities around them.”
https://www.fairfaxcounty.gov/soil-water-conservation/understanding-stormwater-ponds
===Infiltration===
For information about constraints to infiltration practices, and approaches and tools for identifying and designing within them see [[Infiltration]].
For guidance on infiltration testing and selecting a design infiltration rate see [[Design infiltration rate]].
===Risk===
===Risk===
|Avoid clogging/freezing
|Avoid clogging/freezing
|style="text-align: left|
|style="text-align: left|
*Minimum 450 mm;
*Minimum 450 mm diameter inlet pipe;
*Preferred pipe slope: > 1 %;
*Preferred pipe slope: > 1 %;
*If submerged, obvert 150 mm below expected maximum ice depth
*If submerged, obvert 150 mm below expected maximum ice depth
|Avoid clogging/freezing
|Avoid clogging/freezing
|style="text-align: left|
|style="text-align: left|
*Minimum: 450 mm outlet pipe;
*Minimum: 450 mm diameter outlet pipe;
*Preferred pipe slope: > 1 %;
*Preferred pipe slope: > 1 %;
*If orifice control used, 75 mm diameter minimum;
*If orifice control used, 75 mm diameter minimum;
==External links==
==External links==
*[https://www.edmonton.ca/residential_neighbourhoods/PDF/handout_nov_ld.pdf Edmonton Dry Ponds]
*[https://www.edmonton.ca/residential_neighbourhoods/PDF/handout_nov_ld.pdf Edmonton Dry Ponds]
==To review==
https://www.google.com/imgres?imgurl=http%3A%2F%2Fwww.calgary.ca%2FUEP%2FWater%2FPublishingImages%2FBraeside-Dry-Pond-610px.jpg&imgrefurl=http%3A%2F%2Fwww.calgary.ca%2FWWCDI&docid=RBtJ2qx0jhourM&tbnid=-OUrotj9LMYmfM%3A&vet=10ahUKEwjpwbyNt-bfAhXlguAKHS1pDtQQMwhjKBcwFw..i&w=610&h=299&bih=723&biw=1536&q=traplow%20stormwater&ved=0ahUKEwjpwbyNt-bfAhXlguAKHS1pDtQQMwhjKBcwFw&iact=mrc&uact=8
https://www.fairfaxcounty.gov/publicworks/sites/publicworks/files/assets/documents/drypond_1.pdf
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[[category: Modeling]]
[[Category:Infiltration]]
[[Category:Green infrastructure]]
[[Category: Modeling]]