Mount Tabor Middle School Rain Garden 5800 SE 58th Ave • Portland, Oregon

The basic stormwater management concept at the Mount Tabor Middle School rain garden is capture, convey, cleanse, and infiltrate.  The rain garden captures runoff from almost an acre of impervious surfaces (roof, parking, and play areas): roof runoff drops via existing downspouts disconnected from the storm pipes; this water now discharges from the downspouts to at-grade runnels that cross a pedestrian zone surrounding the rain garden, then spill water into the recessed central garden zone; sheet runoff from adjacent asphalt areas is captured in trench drains and also directed to the rain garden.