Gold Bar is a foothill town on the Skykomish. The river is the flood story, and the banks above it are rock and thin soil. Spring water comes down the cuts fast, and a lawn or a driveway that ignores that ends up as a channel. On a hillside the drain belongs above the lawn and above the wall, where the water is still concentrated. A drain at the bottom is a mop.
Snohomish County · ZIP 98251 · 2020 population 1,918
Intercept the water at the top of the slope
We cut a line across the slope, deep enough to catch the seep, and we outlet it to the side, not down the middle of the yard. The pipe has to be protected from the rock and the fill that move every winter. Cleanouts go in where a mountain silt load will eventually arrive.
A French drain is not a retaining wall. If the bank is moving, the wall comes first or with it. Pipe alone in a slumping cut just becomes a crushed pipe.
The ground in Gold Bar
Lots here are not the flat rectangles of Marysville. Driveways climb, yards step down toward the river or the highway, and the native ground is rocky enough that a shovel stops early. When the river runs high, low ground remembers it. We do not put a finished lawn or a bark bed in a spot that has carried water.
What works is straightforward: rock and retaining where the bank is moving, gravel on the steep drive, and a drain that has a real outlet instead of a hole filled with hope. Plantings stay rugged. A manicured hedge is a maintenance bill in a town that gets the mountain rain. Cleanup is often storm debris and alder coming in from the edge of the clearing.
How we do the work
A French drain is a perforated pipe in washed rock, wrapped so the fines do not fill it, sloped to a place the water can actually leave. We do not end a drain in a dry well of hope, and we do not outlet it at the neighbor’s shed.
The trench is deep enough to catch the water you are chasing, which is often the downspout and the wet line along the foundation, not a decorative strip in the middle of the lawn. Surface grading still matters. A drain cannot fix a patio that pitches at the house.
What we look at first
- Where the water shows up, and where it can daylight
- Downspouts that are dumping at the footing
- Utilities before we trench
- Whether the wet spot is a seep that will need more than one line
Downspouts
Solid pipe until it is away from the house, then into the drain if the drain can take the roof. We do not dump a whole roof into a two-inch pop-up in the middle of the lawn and call it drainage.
Cost follows the outlet
A short line with an easy daylight is a different job from a line that has to cross a drive, miss a gas service, and reach a ditch fifty feet away. We price it after we see the outlet. We do not quote a per-foot number from the curb.
Maintenance
Silt arrives. Cleanouts and a flush every few years keep the pipe a pipe. Catch basins, if we used one, need the leaves emptied. A drain with no access becomes a dig when it clogs, so we put the access in.
More from this crew
- French drain installation across Snohomish County
- Retaining walls in Gold Bar
- Gravel installation in Gold Bar
- Landscaping in Gold Bar
- Patio installation in Gold Bar
- French drain installation in Sultan
- French drain installation in Index
- French drain installation in Monroe
Sources for the climate and the water
- USDA plant hardiness map for choosing plants that can take a Snohomish County winter.
- EPA WaterSense on watering less once a lawn or a new planting is established.
- EPA Soak Up the Rain on keeping roof and yard water from becoming someone else’s problem.
