8,254
edits
Changes
Jump to navigation
Jump to search
Line 5:
Line 5: Line 52:
Line 50: <p><strong>The fundamental components of a swale are:</strong> <ul> <li>Graded channel</li> <li>Planting</li> </ul> <strong>Additional components may include:</strong> <ul> <li>[[Filter media]] - an engineered soil mix</li> <li>[[Underdrain]] with clean out and inspection ports</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> </ul></p>
no edit summary
===Overview===
===Overview===
<p>Swales are linear landscape features consisting of a drainage channel with gently sloping sides. Underground they may be filled with engineered soil and/or contain a water storage layer of coarse gravel material. Two variations on a basic swale are recommended as low impact development strategies, although using a combination design of both may increase the benefits:
<p>Swales are linear landscape features consisting of a drainage channel with gently sloping sides. Underground they may be filled with engineered soil and/or contain a water storage layer of coarse gravel material. Two variations on a basic swale are recommended as low impact development strategies, although using a combination design of both may increase the benefits:
<br><strong>Bioswales</strong> are sometimes referred to as 'dry swales', 'vegetated swales', or 'water quality swales'. This type of structure is similar to a [[Bioretention cells|bioretention cell]] but with a long linear shape (surface area typically >2:1 length:width )
<br><strong>[[Bioswales]]</strong> are sometimes referred to as 'dry swales', 'vegetated swales', or 'water quality swales'. This type of structure is similar to a [[Bioretention cells|bioretention cell]] but with a long linear shape (surface area typically >2:1 length:width )
<br><strong>Enhanced Grass Swales</strong> are a lower maintenance alternative, but generally have lower stormwater management potential. The enhancement over a basic grass swale is in the addition of check dams to slow surface water flow and create small temporary pools of water which can infiltrate the underlying soil.
<br><strong><strong>Enhanced Grass Swales</strong></strong> are a lower maintenance alternative, but generally have lower stormwater management potential. The enhancement over a basic grass swale is in the addition of check dams to slow surface water flow and create small temporary pools of water which can infiltrate the underlying soil.
</p>
</p>
{{TextBox|1=Swales are an ideal technology for:
{{TextBox|1=Swales are an ideal technology for:
*Sites with long linear landscaped areas, such as parking lots
*Sites with long linear landscaped areas, such as parking lots
*Connecting with one or more other types of LID}}
*Connecting with one or more other types of LID}}
<table class="table-responsive" table class="table table-striped">
<table class="table-responsive" table class="table table-striped">
<caption><strong>Types of Swales</strong></caption>
<caption><strong>Types of Swales</strong></caption>
</tr>
</tr>
</table>
</table>
</div>
</div>
<div class="col-md-4">
<div class="col-md-4">
<panelSuccess>
<panelSuccess>