Infiltration Trenches are shallow, excavated trenches that are designed to capture, temporarily store, infiltrate and convey runoff from an area up to 5 acres. They are typically linear and filled with a rock storage bed below the surface. Water infiltrates into naturally permeable soils or can be conveyed to another drainage area.
Infiltration basins, dry wells, infiltration trenches, and subsurface infiltration beds provide similar stormwater management capabilities. Determining the right BMP to use will depend on your site needs, landscape limitations, space, and budget.