Bothell · Snohomish County
French Drain Installation in Bothell, WA
French drains, curtain drains and downspout tightlines in Bothell that collect water before it reaches the house and carry it to an approved outlet. Serving Downtown, Canyon Park, Thrasher's Corner and Westhill.
Why Bothell yards hold water
Valley bottoms are soft river deposits with a high water table. The hills are glacial till, firm to dig but slow to drain. That is the root of most soggy lawns, wet crawlspaces and ponding patios we see in Bothell: water that cannot soak in perches on the hard layer and runs to the lowest point.
The Sammamish River valley runs through downtown, with North Creek cutting north through Canyon Park. Westhill and the north end climb onto upland plateaus with some steep side slopes. Slopes push water onto the next lot down, and flat ground leaves it nowhere to go, so the drain route and the grade around the house matter as much as the pipe.
The Sammamish River, North Creek and their tributaries are salmon-bearing streams with wide buffers, and much of the North Creek corridor is protected wetland. Where a drain can legally discharge depends on these features, so we plan the outlet first and the trench second.
Common french drains projects in Bothell
Soggy lawns
French drains for Bothell lawns that stay wet all winter because water perches on the hard till below.
Wet crawlspaces
Curtain and footing-side drains that keep water away from foundations and crawlspaces in Downtown and Canyon Park.
Downspout tightlines
Roof water carried in solid pipe away from Bothell foundations to an approved outlet.
Hillside water control
Curtain drains across Bothell slopes that stop water before it sheets over a bank or onto the next lot.
Flat-ground drainage
Drains, catch basins and ditch work for flat, low Bothell properties where water has nowhere to go.
What our french drains work in Bothell covers
- French Drains
- Curtain Drains
- Downspout Tightlines
- Catch Basins
- Yard Regrading
- Material Delivery
Permits & Rules
Drainage rules in Bothell
Small yard drains usually do not need a permit, but connecting to a storm system, working near a stream or wetland, or changing how water leaves the property can need approval from the City of Bothell. Outside city limits, Snohomish County Planning and Development Services (PDS) handles it.
Water can go to an existing storm system, a dispersion area or an infiltration trench where the soil allows. It cannot be pointed at a neighbor or dumped over a slope.
Cost & Timing
What affects the cost of french drains in Bothell
We do not publish flat prices because no two Bothell sites are the same. These are the things that move the number most here.
Slope and access
Steep Bothell lots take smaller machines, more careful staging and sometimes engineering, which adds time compared with flat, open ground.
Soft ground
Where Bothell soils are soft or wet, over-excavation, fabric and imported rock are often part of the job, and we price that in up front.
Size of the property
On Bothell acreage, longer haul distances inside the property and bigger volumes change the math. Bigger jobs often cost less per unit.
Haul-off and disposal
How much material leaves the site, and what it is, drives cost. Our own trucks keep that predictable on Bothell jobs.
When to schedule french drains in Bothell
French Drains in Bothell goes best in the drier months, when soil compacts properly and trenches stay open. Wet-season work is doable with erosion control and the right material, and we plan for it in the quote.
Bothell's till soils hold water through the winter, which is when drainage problems show up. That is a good time to see where water goes, and the dry season is the time to fix it.
Where We Work
Drainage work across Bothell
Bothell straddles the King and Snohomish county line, and the City of Bothell handles permitting on both sides. Downtown has been almost completely rebuilt in the last decade, and the north end around Canyon Park and Thrasher's Corner keeps adding homes on former wooded parcels.
We install French and curtain drains, catch basins and downspout tightlines across Downtown, Canyon Park, Thrasher's Corner, Westhill, Maywood, Queensborough and Country Village. A mix of older homes near downtown and Westhill, 1980s and 90s subdivisions in the north end, and new construction on subdivided acreage.
Drain rock, fabric and pipe are delivered on our own trucks, and the excavated soil is reused for regrading or hauled away.
We also do french drains nearby in Kenmore, Woodinville, Brier and Lake Forest Park. See everything we do in Bothell, read our full guide to french drains, or browse all service areas.
Why DirtRaptor
Why Bothell owners call us for french drains
Owner on the machine
On Bothell jobs you talk to the person who walks the site, writes the quote and runs the equipment.
Trees and dirt, one crew
If trees are in the way of your Bothell project, we take them down ourselves instead of waiting on a separate tree service.
Our own trucks
Haul-off and deliveries run on our schedule along I-405 and SR 522, not a subcontractor's.
Built for slopes
We plan machine placement, drainage and erosion control for Bothell's sloped ground before we start.
How a french drains job runs
- 01
Find the Water
- 02
Plan the Outlet
- 03
Trench, Fabric, Rock & Pipe
- 04
Backfill & Grade
Real Jobs
Recent DirtRaptor work near Bothell
Demolition · Edmonds, WA
Driveway Removal & Concrete Prep
Tearing out an old blacktop driveway and prepping the ground for a new concrete pour — broken material hauled off, base left clean and ready.
Demolition · Everett, WA
Condemned 100-Year-Old Shed Teardown
A 100-year-old shed, condemned and unsafe, brought down and hauled off — the site left graded flat and clean.
Questions
French Drain Installation in Bothell: FAQs
Will a French drain fix my wet yard in Bothell?
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Often, especially combined with regrading. Valley bottoms are soft river deposits with a high water table. A drain plus better grading handles most of what that causes.
Where can drainage water go in Bothell?
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To an approved outlet: a storm system, a dispersion area or an infiltration trench where the soil allows. The Sammamish River, North Creek and their tributaries are salmon-bearing streams with wide buffers, and much of the North Creek corridor is protected wetland.
Do I need a permit for a French drain in Bothell?
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Usually not for a small yard drain. Storm connections or work near streams, wetlands or slopes can need approval from the City of Bothell. We confirm before digging.
How much does french drains cost in Bothell?
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It depends on the site, so we quote after a free site walk rather than guessing on the phone. The biggest drivers in Bothell are usually slope and access, soft ground, size of the property. You get a written number with inclusions and exclusions spelled out.
When is the best time to schedule french drains in Bothell?
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French Drains in Bothell goes best in the drier months, when soil compacts properly and trenches stay open. Wet-season work is doable with erosion control and the right material, and we plan for it in the quote.
Is Bothell in King or Snohomish County for permits?
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Both. The city limits cross the county line, but inside city limits the City of Bothell is the permitting authority either way. Outside city limits, the county your parcel sits in takes over.
Can you clear a wooded lot near North Creek?
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We can clear what the rules allow. Land near North Creek or its tributaries usually carries a stream buffer that has to stay vegetated. We map the buffer on the site walk so the clearing plan and the quote match what can actually be done.
What is the difference between a French drain and a curtain drain?
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They are built the same way. A curtain drain is placed across a slope to intercept water before it reaches the house; a French drain collects water where it already pools.
Ready for a real number in Bothell?
Send the address and a few photos. We walk the site for free and come back with a written quote.
