Changes

|Lower numbers indicate less surface obstruction and result in faster flow

|Lower numbers indicate less surface obstruction and result in faster flow

Suggested ranges:

Suggested ranges:

* Mown grass (dependent on density) 0.03 – 0.06&lt;ref name = SWMM&gt; Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233. <nowiki>https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt</nowiki> Accessed August 23, 2017.&lt;/ref&gt;

* Mown grass (dependent on density) 0.03 – 0.06<ref name = SWMM> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt  Accessed August 23, 2017.</>

* Rocks 0.03 – 0.05

* Rocks 0.03 – 0.05

* Planted (highly dependent on density) 0.05 – 0.15

* Planted (highly dependent on density) 0.05 – 0.15

|-

|-

|Surface slope (%)

|Surface slope (%)

|If the slope &gt; 3% ,<nowiki> a series of [[</nowiki>Checkdams]] or weirs should be included in the design.  

|If the slope > 3% a series of [[Checkdams]] or weirs should be included in the design.  

|-

|-

| colspan="2" |<center>'''Soil (bioretention filter media)'''</center>

| colspan="2" |<center>'''Soil (bioretention filter media)'''</center>

|-

|-

|Field capacity (fraction)

|Field capacity (fraction)

|Suggested range 0.10 - 0.12 &lt;ref name = SWMM/&gt;

|Suggested range 0.10 - 0.12 <ref name = SWMM/>;

|-

|-

|Wilting point (fraction)

|Wilting point (fraction)

|Suggested value 0.03 &lt;ref name = SWMM/&gt;

|Suggested value 0.03 <ref name = SWMM/>

|-

|-

|Conductivity (mm/hr)

|Conductivity (mm/hr)

|-

|-

|Offset height

|Offset height

|<nowiki>This is the height from the base of the cell to the height at which the drain discharges. In some designs this may be the height of the perforated pipe within the storage layer [[Bioretention: Partial infiltration]]. In other designs this height is adjusted by creating an upturn in the discharge pipe. [[Bioretention: Internal storage]] </nowiki>

|This is the height from the base of the cell to the height at which the drain discharges. In some designs this may be the height of the perforated pipe within the storage layer [[Bioretention: Partial infiltration]]. In other designs this height is adjusted by creating an upturn in the discharge pipe. [[Bioretention: Internal storage]]

|}

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