French Drains & Drainage Systems in Fife, WA

Drainage & French drains in Fife: what to know

Level lots give a pipe little to work with. A drain needs steady fall from the wet area to the outlet, and in a valley where the water table can sit 10 to 15 feet down and the nearest ditch may be a long way off, we measure elevations before we promise a layout.

The outlets here come with rules. Where a driveway crosses an existing drainage ditch, the code requires a culvert or other structure, as the city engineer determines, at the abutting owner’s expense. Even the small channels are mapped: Fife Ditch Tributary 1 has a floodplain of its own. Shallow groundwater also limits infiltration, and the city’s low impact development rules require a soils report covering groundwater depth through every season.

Permits and rules in Fife

A French drain by itself is not usually a building-permit item, but Fife’s drainage chapter regulates land-disturbing activity and new impervious surface, and its storm drainage permit goes through Public Works. The code exempts low impact retrofits on residential lots from the stormwater permit when the facility takes water from no more than 1,250 square feet, so a small on-site fix can be simpler than a piped connection. We look up Fife’s outlet rules for your lot before we lay any pipe.

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

How we approach it

Shoot elevations from the wet area to every possible outlet
Call for utility locates and read the lot’s flood and critical-area maps
Use catch basins and tightlines where the lot has too little fall
Add cleanouts so a long, shallow-grade pipe can be flushed

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

Questions from Fife homeowners

Where can my Fife French drain discharge if there is no slope?

To an outlet that can legally take it: a roadside ditch or storm connection the city approves, or another approved on-site route. Flat lots sometimes need a catch basin or sump to reach it. We map the outlet before quoting the trench.

Do I need a culvert if my Fife driveway crosses a ditch?

Yes. The code requires a suitable culvert or other drainage structure, as the city engineer determines, at the abutting owner’s expense, wherever a driveway crosses an existing drainage ditch. We get the engineer’s requirement before any pour or backfill.

Can I connect my drain to the storm system under the street in Fife?

Possibly, but that is right-of-way work needing a city permit, and the code restricts cutting a street for five years after it is paved or resurfaced, with exceptions. We confirm with Public Works whether a connection exists first.