French Drains & Drainage Systems in Everett, WA

Drainage & French drains in Everett: what to know

On flat ground a French drain depends on an outlet low enough to carry the flow, so we survey that outlet before any trench is marked. On a slope, the trench intercepts water moving downhill and falls steadily toward its outlet. A curtain line set across the slope intercepts seeping water above the turf, and its outlet is fixed on paper before any trench opens.

The stormwater page names a small-project template for projects in the combined-sewer zone that add less than 5,000 square feet of new and replaced hard surface. Roof tightlines run in solid pipe to an outlet of their own, kept apart from the perforated run, and that outlet is sited on ground able to absorb the flow. The drawing goes into the job record once the route is agreed.

Permits and rules in Everett

We confirm whether the trench reaches the public right-of-way, whether it ties into a storm system, and whether the parcel sits in the combined-sewer zone, and we total the new and replaced hard surface, all before quoting. A line that reaches the right-of-way gets its own review, and we ask city staff which office handles it. That review is listed as its own line in the estimate.

Rules change and vary by parcel, so we confirm the current requirements with the city before we start.

How we approach it

Survey for the lowest workable outlet before any layout
Cut curtain drains across the slope above the wet area
Send downspout flow through solid pipe to a separate outlet
Settle any right-of-way review before the trench opens

For the full process, see our Drainage Systems & French Drains page.

Questions from Everett homeowners

Where can an Everett French drain discharge?

Onto ground that can absorb the flow, and into a storm connection only after the city answers. Our design keeps the outlet off the street, the sidewalk, and a neighbor’s lot.

Does a yard drain on an Everett lot require review?

The cut depth, the outlet location, and any contact with the public right-of-way decide it. We confirm the answer with city staff before the trench opens.

Will a drain help a wet Everett hillside yard?

It can, when water moves downhill from above the yard. We survey the grade and the drainage path first, then recommend a drain only where it addresses that flow.