Stormwater Design · Whatcom County
Stormwater design across Whatcom County — county parcels, small cities, real approvals.
Whatcom County projects live under a different reviewer than Bellingham projects — and on county parcels the stormwater conversation usually starts with a land disturbance permit or a fill & grade permit, not a city site-plan review.
AXE designs stormwater for projects across the county: rural residential builds outside city limits, commercial work in Lynden and Ferndale, shoreline-adjacent lots near Blaine and Birch Bay. One PE-licensed bench in Bellingham, every jurisdiction in the county.
Who this page is for
- Owners building on unincorporated county parcels who hit the land disturbance permit threshold
- Builders working in Lynden, Ferndale, Everson, or Blaine, where each city runs its own review
- Developers platting county land who need stormwater engineered at the subdivision level
- Anyone told by Whatcom County PDS that their project needs an engineered drainage plan
What AXE handles
- Stormwater designs supporting Whatcom County land disturbance permits
- Fill & grade permit engineering — grading plans with drainage control
- On-site infiltration design where county soils allow it
- Stormwater for short plats and long plats on county land
- City-specific submittals in Lynden, Ferndale, Everson, and Blaine
- Critical areas coordination when wetlands or streams touch the parcel
The local picture
Unincorporated Whatcom County reviews stormwater through Planning & Development Services, generally following Ecology's Western Washington manual. The trigger is usually land disturbance: clear, grade, or fill past the county's thresholds and a permit with engineered drainage becomes part of your project.
The small cities each have their own flavor — Lynden has been active with commercial and plat work, Ferndale runs its own review timelines, and shoreline-adjacent work near Blaine and Birch Bay can add critical-areas review. We've submitted in all of them.
Commonly served ZIP codes in this area: 98226 · 98240 · 98244 · 98247 · 98264 · 98266 · 98295
How it works, start to stamp.
01 · Parcel + jurisdiction check
County or city? Which thresholds? Any critical areas mapped? We confirm what review you're actually facing before any design work starts.
02 · Soils and infiltration assessment
County stormwater lives or dies on soils. We establish infiltration feasibility early so the design uses the cheapest facility that will actually get approved.
03 · Engineered plan + permit package
Stamped grading and drainage plans assembled to match the reviewing jurisdiction's checklist — county PDS or city public works.
04 · Comments to approval
We carry the design through review responses until the permit issues.
PE-licensed. Founded 2017. One engineer of record from feasibility through approval.
Questions we hear about stormwater design in Whatcom County.
What triggers a land disturbance permit in Whatcom County?
Clearing, grading, or filling beyond the county's area and volume thresholds. Most single-home builds on county land cross them once driveway, building pad, and septic grading add up. We can check your project against the current thresholds in one quick review.
Is a fill & grade permit the same thing?
They're related but not identical — fill & grade focuses on earth movement, while land disturbance review pulls in drainage and erosion control. Many county projects need the engineering for both wrapped into one plan set, which is how we typically package it.
Do you work in Lynden and Ferndale, or just county land?
Both. The small cities run their own reviews with their own standards, and we submit in them regularly — including recent commercial and plat work in Lynden.
My parcel has a mapped wetland. Is the project dead?
Usually not — it means critical-areas review joins the permit path. Buffers and mitigation get designed around, and we coordinate the drainage plan with the critical-areas work so the two reviews don't fight each other.
County parcel? Small-city lot?
Send the parcel number. We'll tell you which permits the project triggers and what the stormwater design needs to look like — proposal within one business day.
Start the conversation