Changes

For underground conveyance which promotes infiltration, see [[Exfiltration trenches]]. <br>

For underground conveyance which promotes infiltration, see [[Exfiltration trenches]]. <br>

For design recommendations on grassed channels, see [[Enhanced grass swales]].

For design recommendations on grassed channels, see [[Enhanced grass swales]].

==Overview==

===Overview===

<strong>The fundamental components of a bioswale are:</strong>

<p><strong>The fundamental components of a bioswale are:</strong>

*A graded channel

*Planting

        <li>A graded channel</li>

*[[Bioretention: Filter media | Filter media]], to permit infiltration into the facility (not necessarily to soils below)

        <li>Planting</li>

        <li>[[Bioretention: Filter media | Filter media]], to permit infiltration into the facility (not necessarily to soils below)</li>

<strong>Additional components may include:</strong>

<strong>Additional components may include:</strong>

*[[Underdrain]] with clean out and inspection ports

        <li>[[Underdrain]] with clean out and inspection ports</li>

*[[Liner|Impermeable membrane]] to prevent infiltration to soils below

        <li>[[Liner|Impermeable membrane]] to prevent infiltration to soils below</li>

*[[Check dams]] to facilitate short tern ponding

        <li>[[Check dams]] to facilitate short tern ponding</li>