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rect 544 56 606 114 [[Forebays]]
rect 544 56 606 114 [[Forebays]]
rect 366 579 282 529 [[Forebays]]
rect 366 579 282 529 [[Forebays]]
poly 378 571 486 571 602 577 599 130 504 124 493 206 390 209 371 362 [[Perennial: List]]
poly 378 571 486 571 602 577 599 130 504 124 493 206 390 209 371 362 [[Perennials: List]]
poly 459 1110 363 1111 366 1030 594 1025 599 1109 496 1110 497 1092 465 1093 [[Perennial: List]]
poly 459 1110 363 1111 366 1030 594 1025 599 1109 496 1110 497 1092 465 1093 [[Perennials: List]]
poly 285 469 362 472 354 335 375 203 478 191 492 74 393 109 334 159 297 224 285 291 [[Graminoids: List]]
poly 285 469 362 472 354 335 375 203 478 191 492 74 393 109 334 159 297 224 285 291 [[Graminoids: List]]
rect 287 1040 353 1114 [[Graminoids: List]]
rect 287 1040 353 1114 [[Graminoids: List]]
rect 279 1114 470 1142 [[Mulch]]
rect 279 1114 470 1142 [[Mulch]]
rect 492 1115 60 1141 [[Mulch]]
rect 492 1115 600 1141 [[Mulch]]
rect 282 1145 468 1217 [[Bioretention: Filter media]]
rect 282 1145 468 1217 [[Bioretention: Filter media]]
rect 491 1147 603 1217 [[Bioretention: Filter media]]
rect 491 1147 603 1217 [[Bioretention: Filter media]]
rect 282 1250 469 1299 [[Reservoir gravel]]
rect 282 1250 469 1299 [[Reservoir gravel]]
rect 491 1250 602 1299 [[Reservoir gravel]]
rect 491 1250 602 1299 [[Reservoir gravel]]
poly 3 1325 471 1322 474 1292 47 1096 487 1095 487 1339 3 1340 [[Overflow: Routing]]
poly 3 1325 471 1322 474 1292 474 1096 487 1095 487 1339 3 1340 [[Overflow]]
</imagemap>
</imagemap>
{{TOClimit|2}}
Hydraulically separated or connected with an [[underdrain]], these are often quite small units of 5 - 50 m<sup>2</sup> each. In urban settings the bioretention may be bounded entirely with hardscape, restricting options for [[pretreatment]] and sheet flow. Amenity and safety can be enhanced on sidewalks with a short (~ 45 cm wall) for seating, although the finished grade is usually only slightly lower than surroundings. Where underground space permits, shade [[trees]] are common feature of these facilities, enhancing the streetscape experience and optimizing transpiration. This type of bioretention is often designed offline, with bypass [[overflow]].
An excellent opportunity for integrating more bioretention into the street is through careful design of curb extensions for traffic control. See [[Roadside safety]] for design advice specific to this application.
==Gallery==
{{:Curb extensions: Gallery}}
{{:Extended tree pits: Gallery}}
==See Also==
==See Also==
*[[Bioretention cells]]
*[[Bioretention cells]]
*[[Stormwater planters]]
*[[Stormwater planters]]
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----
*[[Curb cuts]]
*[[Curb cuts]]
*[[Forebays]]
*[[Forebays]]
*[[Overflow:_Routing|Overflow]]
*[[Overflow]]
*[[Mulch]]
*[[Mulch]]
*[[Bioretention:_Filter_media|Filter media]]
*[[Bioretention:_Filter_media|Filter media]]
*[[Choking layer]]
*[[Choker layer]]
*[[Reservoir_gravel|Reservoir]]
*[[Reservoir_aggregate|Reservoir]]
*[[Trees]]
*[[Soil cells]]