French Drains in Washington, DC

French Drains for Washington Homes

A French drain is a gravel-filled trench with perforated pipe that collects water underground and carries it to a safe outlet. In Washington it is one of the most effective fixes for wet basements, soggy side yards and water sheeting off a neighbor's lot. Local pros start by finding where water comes from, since in city lots the source is usually roof runoff, compacted soil or hardscape that slopes the wrong way rather than soil type alone.

The trench is dug along the problem line, lined with filter fabric, bedded with washed stone and fitted with perforated pipe set at a steady fall toward a dry well, a daylight outlet or another approved discharge point. Pros avoid pointing water at neighbors, the alley or a sidewalk, and they plan around tree roots, utility lines and patio footings. Calling 811 a few days before digging is part of the job.

English basements in Dupont Circle, Logan Circle and Capitol Hill are frequent candidates, as are sloped lots in Woodridge and the Palisades where water runs downhill toward the house. On detached Brookland and Michigan Park lots, a drain often pairs with downspout fixes and light regrading so the whole yard sheds water.