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*Biomedia - an engineered soil mix*Planting *Underdrain with clean out and inspection ports*Impermeable membrane to prevent infiltration to soils below*Check dams
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*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">
<caption><strong>Types of Swales</strong></caption>
<tr class ='success'><th>Property</th><th>Bioswale</th><th>Enhanced Grass Swale</th></tr>
<tr><td>Surface water</td><td>Minimal<br>Any surface flow can be slowed with check dams</td><td>Ponding encouraged with check dams</td></tr>
<tr><td>Engineered soil</td><td>Biomedia required</td><td>Amendment preferable when possible</td></tr>
<tr><td>Udnerdrain</td><td>Common</td><td>Uncommon</td></tr>
<tr><td>Maintenance</td><td>Medium to high</td><td>Low</td></tr>
<tr><td>Stormwater benefit</td><td>High</td><td>Medium</td></tr>
<tr><td>Biodiversity benefit</td><td>Increased with native planting</td><td>Lower</td></tr>
<p><strong>The fundamental components of a swale are:</strong>
<p><strong>The fundamental components of a swale are:</strong>
<ul>
<li> graded channel</li>
<li> planting </li>
</ul>
</p>
</p>
<p><strong>Additional components may include:</strong>
<p><strong>Additional components may include:</strong>
<ul>
<li>Biomedia - an engineered soil mix</li>
<li>Planting </li>
<li>Underdrain with clean out and inspection ports</li>
<li>Impermeable membrane to prevent infiltration to soils below</li>
<li>Check dams</li>
</p>
</p>