Changes

Typically, this is only worth exploring over sandy textured native subsoils with rapid infiltration.  

Typically, this is only worth exploring over sandy textured native subsoils with rapid infiltration.  

Note that narrow, linear bioretention features (or [[bioswales]]) drain faster than round or blocky footprint geometries.  

The drainage time calculator noted above can be used to calculate drainage time assuming three dimensional drainage as well.

*Begin the drainage time calculation by dividing the area of the practice (''A_p'') by the perimeter (''x'')

*Begin the drainage time calculation by dividing the area of the practice (''A_p'') by the perimeter (''x'')

*''x'' is the perimeter of the practice (m), and

*''x'' is the perimeter of the practice (m), and

*''d_r'' is the depth of the storage reservoir (m).}}

*''d_r'' is the depth of the storage reservoir (m).}}

The drainage time calculator noted above can be used to calculate drainage time assuming three dimensional drainage as well.

 

Note that narrow, linear bioretention features (or [[bioswales]]) drain faster than round or blocky footprint geometries.

===Groundwater mounding===

===Groundwater mounding===