Bioswale design, landscaping, and stormwater management for Northeast Seattle. Every bioswale we install upstream keeps sewage out of the creek downstream.
Serving the Thornton Creek Watershed since 2026
Free AssessmentThornton Creek is one of the most polluted urban streams in Washington State. And it starts in your neighborhood.
When it rains hard in Northeast Seattle, the combined sewer system can't handle the volume. The result: raw sewage overflows directly into Thornton Creek and out to Lake Washington at Matthews Beach - where families swim.
Every impervious surface in the watershed - every roof, driveway, and compacted lawn - accelerates runoff into a system that was never designed for this much water. The city's solution is massive infrastructure projects that cost hundreds of millions.
The homeowner's solution is simpler: absorb the water before it hits the pipe. That's what a bioswale does.
A single residential bioswale can absorb up to 90% of the stormwater runoff from your property.
Engineered soil layers and native plantings capture rainwater on your property before it enters the storm drain. Up to 90% on-site absorption.
Seven-layer bioretention system removes 99% of sediment, heavy metals, and petroleum products before water reaches Thornton Creek.
Professional landscaping that pays for itself. Reduce your stormwater utility bill while adding curb appeal that stands out on the block.
Thornton Creek flows 7+ miles from its headwaters to Lake Washington. Here's the journey - and where your bioswale fits in.
The North Fork begins near Jackson Park Golf Course in Shoreline. Water from Haller Lake and surrounding neighborhoods feeds into the creek's upper reaches. This is where the watershed starts.
The creek flows south through Pinehurst, picking up residential runoff from one of the densest parts of the watershed. Victory Heights contributes from the east. Every yard matters here.
The South Fork originates near Licton Springs and North Seattle College. It flows through Northgate, gathering volume as it moves east toward the confluence.
The heart of the watershed. Maple Leaf sits between the two forks. Lake City is where density meets the creek - the commercial district adds significant impervious surface to the system.
The North and South Forks converge at Meadowbrook Pond - a constructed wetland that serves as the creek's last major filtration point before the final stretch to the lake.
Thornton Creek enters Lake Washington at Matthews Beach Park. Everything upstream - every yard, every roof, every bioswale or lack thereof - shows up here. This is where the watershed's health is measured.
We serve every neighborhood in the Thornton Creek Watershed. Find yours.
Commercial district at the watershed's heart. Landscaping, bioswales, and stormwater solutions.
North Fork headwaters. Your yard drains directly to the creek's upper reaches.
Between the forks. Dense residential, prime bioswale territory.
East side of the North Fork. Hilltop drainage feeds the creek system.
Near the confluence. Last chance to filter before the creek merges.
Where the creek meets Lake Washington. Ground zero for watershed health.
Home to Meadowbrook Pond, the creek's constructed wetland and filtration hub.
South Fork origins. Major redevelopment zone with stormwater impact.
Sacred springs, historic headwaters. The South Fork begins here.
Eastern edge of the watershed. Established residential with mature tree canopy.
Every bioswale installed in the Thornton Creek Watershed is one more property absorbing its own stormwater instead of sending it to an overwhelmed sewer system.
Serving the Thornton Creek Watershed since 2026
Ravenna, Bryant, Green Lake, University District
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