Drainage, Stormwater & Hardscape in Northwest Washington, DC

Drainage in the Rock Creek quadrant

Rock Creek Park bisects the Northwest quadrant, and the Potomac River forms its western edge — so nearly every Northwest property ultimately drains toward one of the two. Longtime residents even split the quadrant into "west of the park" and "east of the park" (WOTP and EOTP), the line Rock Creek Park draws between neighborhoods like Georgetown and Spring Valley and the rest of the city.

That west-of-the-park / east-of-the-park line is a useful drainage clue, too: as a general pattern, lots on the west side tend to shed toward the Potomac, while those on the east feed the Rock Creek side of the watershed. Where a property sits relative to the park is often the first thing that tells us which way its runoff wants to go.

Most of Northwest is also served by DC's combined sewer system — the older network, built before 1900, that carries stormwater and sewage in the same pipe. When heavy rain overwhelms that system, runoff backs up across yards and toward the creek. Actaeon's drainage work — French drains, regrading, downspout extensions, dry wells, and yard leveling — keeps water moving off the lot and away from the foundation before it becomes the combined sewer's problem, or yours.

Hardscape and drainage for established homes

Northwest is home to many of the District's historic neighborhoods, and it is the wealthiest quadrant of the city — particularly west of 16th Street. Established homes come with established problems: grades that have settled over the decades, original downspouts that dump against the foundation, and older retaining walls holding back sloped lots.

Actaeon rebuilds and installs retaining walls, patios, walkways, and stone features, and regrades the ground around them so water sheds the way it should. On a mature Northwest lot, hardscape and drainage are the same job — a patio or wall that ignores where the water goes will move the problem, not solve it. In Washington, DC, most retaining-wall installations require a building permit from the Department of Buildings (DOB) with concurrent review by the Department of Energy and Environment (DOEE), and we build to that standard.

DC permits and the RiverSmart rebates you can actually use

Washington, DC building permits are issued by the Department of Buildings (DOB), at 1100 4th Street SW — not a county office. Land-disturbing work and most retaining walls require a DOB permit, with DOEE reviewing the stormwater side. We build to that standard.

On the incentive side, DOEE's RiverSmart Homes program is the one most Northwest homeowners ask about — but which parts you can use depend on your sewershed. Start with the pieces open to essentially any DC home: DOEE installs rain barrels for a $100 copayment (up to two per property) and plants shade trees at no cost, and RiverSmart Rewards can take up to 55% off the DOEE stormwater fee and 20% off DC Water's Clean Rivers charge for properties with qualifying green infrastructure.

The larger permeable-pavers and re-vegetation rebate — up to $6,000 — is different. DOEE limits it to homes within the MS4 sewershed, in Ward 7, or in Ward 8. Because most of Northwest sits in the combined sewer system, most Northwest addresses don't qualify. The likeliest exceptions are on the outer, west-of-the-park edge of the quadrant, but eligibility is set address by address — confirm yours with DOEE before you count on it. Either way, the drainage and hardscape work stands on its own.

Neighborhoods We Serve in Northwest DC

Serving Northwest DC neighborhoods including Georgetown, Cleveland Park, Tenleytown, Friendship Heights, Chevy Chase, Spring Valley, American University Park, the Palisades, Glover Park, Woodley Park, Cathedral Heights, Adams Morgan, Mount Pleasant, Columbia Heights, Petworth, Shepherd Park, Brightwood, 16th Street Heights, Takoma, and Bloomingdale.