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→Underdrain
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Image:Stormwater planter.png|thumb|700 px|This is an image map of a stormwater planter, clicking on components will load the appropriate article.
Image:Stormwater planter.png|thumb|700 px|This is an image map of a stormwater planter, clicking on components will load the appropriate article.
rect 480 400 534 517 [[Forebays]]
rect 480 400 534 517 [[Forebays]]
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circle 190 169 26 [[Overflow]]
rect 188 1298 156 1071 [[Overflow]]
rect 152 1166 340 1189 [[mulch]]
rect 200 1118 498 1146 [[Mulch]]
rect 65 1164 538 1190 [[mulch]]
rect 195 1151 528 1235 [[Bioretention:_Filter_media|Filter media]]
rect 341 1104 363 1303 [[Overflow]]
rect 195 1235 528 1250 [[Choking layer]]
rect 152 1191 339 1301 [[Biomedia]]
rect 195 1250 528 1305 [[Reservoir_gravel|Reservoir]]
rect 366 1194 541 1302 [[Biomedia]]
poly 162 1305 533 1307 352 1343 [[Underdrains]]
rect 229 1162 151 1079 [[Grasses]]
rect 227 1019 340 1164 [[Perennials]]
rect 369 972 483 1162 [[Shrubs]]
poly 139 1158 149 1155 151 1303 352 1343 542 1305 541 1165 550 1161 553 1311 354 1355 139 1311 [[Liner]]
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[[File:Stormwater planter pu.png|thumb|An above ground planter with downspout and overflow illustrated.]]
Over subsurface infrastructure, soils prone to subsidence, or pollution hotspots, it may be necessary to prevent all [[infiltration]]. These BMPs can also be squeezed into tight urban spaces, adjacent to buildings and within the usual setbacks required for infiltrating facilities. Stormwater planters can also be used as a means of providing building-integrated LID by capturing a portion of the rainwater from the rooftop.
Over subsurface infrastructure, soils prone to subsidence, or pollution hotspots, it may be necessary to prevent all [[infiltration]]. These BMPs can also be squeezed into tight urban spaces, adjacent to buildings and within the usual setbacks required for infiltrating facilities. Stormwater planters can also be used as a means of providing building-integrated LID by capturing a portion of the rainwater from the rooftop.
This type of cell can be constructed above grade in any waterproof and structurally sound container, e.g. in cast concrete or a metal tank.
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==Overview==
==Overview==
{{textbox|Stormwater planters are an ideal technology for:
{{textbox|Stormwater planters are an ideal technology for:
'''The design may benefit from:'''
'''The design may benefit from:'''
*A [[level spreaders| level spreader]]
*A [[level spreaders| level spreader]]
==Planning Considerations==
==Planning Considerations==
Stormwater Planters are a type of bioretention practice. Please defer to planning considerations in [[Bioretention]]
==Design==
==Design==
[[Underdrain#Underdrains for non-exfiltrating practices]]
{{:Planters: Sizing}}
===Storage media===
[[filter media]]
===Underdrain===
Stormwater planters differ from full and/or partial infiltration [[bioretention]] practices in that the storage function is provided only by the [[water retention capacity]] of the [[filter media]]. As such, there is no storage reservoir and the only purpose to the aggregate layer is to drain water to the perforated [[pipe]]. For this, a medium aggregate as described in [[choker layer]] is recommended as it negates the need for a separating layer to the filter media. Design details can be found here [[Underdrains#Underdrains for non-exfiltrating practices|Underdrains]] for non-exfiltrationg practices.
===Planting===
*Planters must be designed in a way that insulates the soil through freezing temperatures, or plant species that can survive the winter season in raised planters must be used.
*Stormwater planters routinely capture only rainwater flowing from adjacent rooftops. This means that [[salt]] may be less of a concern than in [[Bioretention: Parking lots]] or [[Bioretention: Streetscapes]].
*The [[plant lists]] are still a good place to start when selecting species for LID in Ontario.
*A more formal aesthetic for the planting design is appropriate for the urban hardscape setting.
===Liners===
{{:Liner}}
==Surface==
As stormwater planters are often quite small and receive very rapid flow, both a [[level spreader]] and the use of [[stone]] mulch are strongly recommended.
==Gallery==
==Gallery==
==Performance==
==Performance==
{{:lit review}}
Water quality <ref>Macnamara, J.; Derry, C. Pollution Removal Performance of Laboratory Simulations of Sydney’s Street Stormwater Biofilters. Water 2017, 9, 907.;doi:10.3390/w9110907</ref>
===Hydrology===
<ref>Davis, Allen P., Robert G. Traver, William F. Hunt, Ryan Lee, Robert A. Brown, and Jennifer M. Olszewski. “Hydrologic Performance of Bioretention Storm-Water Control Measures.” Journal of Hydrologic Engineering 17, no. 5 (May 2012): 604–14. doi:10.1061/(ASCE)HE.1943-5584.0000467.</ref>
<ref>Yeakley, J.A., and K.K. Norton. “Performance Assessment of Three Types of Rainwater Detention Structures for an Urban Development in Wilsonville, Oregon, USA,” 70. Portland, 2009.</ref>
===Water quality===
<ref>Macnamara, J.; Derry, C. Pollution Removal Performance of Laboratory Simulations of Sydney’s Street Stormwater Biofilters. Water 2017, 9, 907.;doi:10.3390/w9110907</ref>
<ref>Lucke, T., & Nichols, P. W. B. (2015). The pollution removal and stormwater reduction performance of street-side bioretention basins after ten years in operation. Science of The Total Environment, 536, 784–792. https://doi.org/10.1016/J.SCITOTENV.2015.07.142</ref>
<ref>Lucke, T., & Nichols, P. W. B. (2015). The pollution removal and stormwater reduction performance of street-side bioretention basins after ten years in operation. Science of The Total Environment, 536, 784–792. https://doi.org/10.1016/J.SCITOTENV.2015.07.142</ref>
<ref>Macnamara, J.; Derry, C. Pollution Removal Performance of Laboratory Simulations of Sydney’s Street Stormwater Biofilters. Water 2017, 9, 907. doi:10.3390/w9110907</ref>
<ref>Macnamara, J.; Derry, C. Pollution Removal Performance of Laboratory Simulations of Sydney’s Street Stormwater Biofilters. Water 2017, 9, 907. doi:10.3390/w9110907</ref>
==See Also==
==See Also==
*[[Bioretention cells]]
*[[Bioretention: Parking lots]]
*[[Extended tree pits]]
*[[Bioretention: Streetscapes]]
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*[[Shrubs: List|Shrubs]]
*[[Shrubs: List|Shrubs]]
*[[Overflow]]
*[[Overflow]]
*[[Mulch]]
*[[Mulch]]
*[[Bioretention:_Filter_media|Filter media]]
*[[Filter media]]
*[[Choking layer]]
*[[Choking layer]]
*[[Reservoir_gravel|Reservoir]]
*[[Reservoir_gravel|Reservoir]]