Category:Level 3 - General information, reference, tables, images, and archives/Tables/Infiltration basin, trench, underground infiltration

Category:Level 3 - General information, reference, tables, images, and archives/Tables/Infiltration basin, trench, underground infiltration

Photo of a Infiltration trench in Lino Lakes

Photo of an infiltration basin. Source: Clark County, Washington, with permission.

Infiltration best management practices (bmps) treat urban stormwater runoff as it flows through a filtering media and into underlying soil, where it may eventually percolate into groundwater. The filtering media is typically coarse-textured and may contain organic material, as in the case of bioinfiltration BMPs. These BMPs are sites ranging from small to relatively large. They are primarily designed for removal of stormwater runoff volume and pollutants in that runoff. They are effective at removing total suspended solids (TSS), particulate phosphorus, metals, bacteria, nitrogen, and most organics. Soluble pollutants such as chloride and nitrate typically through these BMPs and into underlying groundwater.

Infiltration practices include several practices, designed to infiltrate water (no underdrain).

• Infiltration basin
• Infiltration trench
• Underground infiltration
• Bioinfiltration
• Permeable pavement
• Swale with check dams

This page (Category) provides links to tables that provide information on infiltration practices.