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|  | This article is about installations designed to capture and convey surface runoff along a vegetated channel, whilst also promoting infiltration. <br> |  | This article is about installations designed to capture and convey surface runoff along a vegetated channel, whilst also promoting infiltration. <br> | 
| − | For underground conveyance which promotes infiltration, see [[Exfiltration trenches]]. | + | 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]]. | 
| − |   | + | <div class="col-md-8">{{TOClimit|2}} | 
| − | <p><strong>The fundamental components of a swale are:</strong> | + | ===Overview=== | 
|  | + | <p><strong>The fundamental components of a bioswale are:</strong> | 
|  |      <ul> |  |      <ul> | 
| − |          <li>Graded channel</li> | + |          <li>A graded channel</li> | 
|  |          <li>Planting</li> |  |          <li>Planting</li> | 
|  | + |         <li>[[Bioretention: Filter media | Filter media]], to permit infiltration into the facility (not necessarily to soils below)</li> | 
|  |      </ul> |  |      </ul> | 
| − |     <strong>Additional components may include:</strong>
 | + | <strong>Additional components may include:</strong> | 
|  |      <ul> |  |      <ul> | 
| − |         <li>[[Filter media]] - an engineered soil mix</li>
 |  | 
|  |          <li>[[Underdrain]] with clean out and inspection ports</li> |  |          <li>[[Underdrain]] with clean out and inspection ports</li> | 
|  |          <li>[[Liner|Impermeable membrane]] to prevent infiltration to soils below</li> |  |          <li>[[Liner|Impermeable membrane]] to prevent infiltration to soils below</li> | 
| − |         <li>[[Turf reinforcement]] to prevent scour</li>
 |  | 
|  |          <li>[[Check dams]] to facilitate short tern ponding</li> |  |          <li>[[Check dams]] to facilitate short tern ponding</li> | 
|  |      </ul> |  |      </ul> | 
|  | </p> |  | </p> |