Steep slopes, older homes, and no stormwater infrastructure. When it rains in Maple Leaf, gravity sends everything downhill into Thornton Creek.
Apply for Pilot ProgramMaple Leaf's topography is the problem. The neighborhood sits on steep slopes that drain directly into the Thornton Creek corridor. When it rains, water doesn't pool here - it moves. Fast. Downhill. Picking up lawn chemicals, motor oil from driveways, and sediment along the way.
The homes are mostly mid-century builds with no stormwater management. No rain gardens, no detention, no filtration. Just gutters pointed at the street and gravity doing the rest. Underneath is the same alderwood soil profile as every neighborhood in the watershed - loose topsoil over impermeable hardpan.
A bioswale on a Maple Leaf hillside lot does something no other landscaping can: it interrupts the flow. Instead of water rushing downhill unchecked, engineered contours capture it, filter it through native soil media, and release it slowly. Your yard becomes a brake pedal for the entire slope.
Tailored stormwater and landscaping solutions for your property.
Custom-engineered bioswales for Maple Leaf's mid-watershed position. Designed for the neighborhood's mature soils and established landscapes.
Rain gardens, French drains, permeable surfaces, and grading solutions. Reduce runoff from your property before it enters either fork of Thornton Creek.
Full-service landscaping using Pacific Northwest native species. Low-maintenance designs that complement Maple Leaf's established tree canopy.
We're selecting 5 founding homeowners for our first residential bioswale installations. Maple Leaf's hillside lots are exactly the kind of high-impact properties the pilot was designed for.
Explore the Thornton Creek Watershed