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→Types of bioretention by underground design
<table class="table table-striped">
<table class="table table-striped">
<caption><strong>Types of bioretention by underground design</strong></caption>
<caption><strong>Types of bioretention by underground design</strong></caption>
<tr class ='success'><th>Type</th><th>Mechanisms</th><th>Gravel layer</th>Underdrain</th><th>Liner</th><th>Examples</th></tr>
<tr class ='success'><th>Type</th><th>Mechanisms</th><th>Gravel layer</th><th>Underdrain</th><th>Liner</th><th>Examples</th></tr>
<tr><td>[[Rain gardens]]</td><td>These are the simplest construction, often used by residents or community groups. Volume reduction is through infiltration and evapotranspiration. </td><td>-</td>-</td><td>-</td><td>Image of Raingarden</td></tr>
<tr><td>[[Rain gardens]]</td><td>These are the simplest construction, often used by residents or community groups. Volume reduction is through infiltration and evapotranspiration. </td><td>-</td>-</td><td>-</td><td>Image of Raingarden</td></tr>
<tr><td>Infiltrating bioretention</td><td>This is the most highly desirable type of bioretention where the soils permit infiltration at a great enough rate to empty the facility between storm events. Volume reduction is primarily through infiltration to the underlying soils, with some evapotranspiration. As there is no outflow from this BMP, it is particularly desirable in areas where nutrient management is a concern to the watershed.</td><td>yes</td>-</td><td>-</td><td>Diagram of bioretention without underdrain.</td></tr>
<tr><td>Infiltrating bioretention</td><td>This is the most highly desirable type of bioretention where the soils permit infiltration at a great enough rate to empty the facility between storm events. Volume reduction is primarily through infiltration to the underlying soils, with some evapotranspiration. As there is no outflow from this BMP, it is particularly desirable in areas where nutrient management is a concern to the watershed.</td><td>yes</td>-</td><td>-</td><td>Diagram of bioretention without underdrain.</td></tr>