Granite Falls takes the mountain rain and sits on ground that falls away toward the river and the falls. Steep sides of lots are normal. Water concentrates, finds the weak spot in a bank, and leaves a rill where the lawn used to be. Foothill drives fail where water runs down the wheel track. The rock needs a crown, a ditch, and a size that does not float away.
Snohomish County · ZIP 98252 · 2020 population 3,572
A drive that can take the wash
We use crushed rock that locks, and we give the water a ditch that is not the middle of the drive. Culvert crossings get cleaned or replaced if the old pipe is the reason the rock keeps disappearing.
Steep sections may need more than gravel. If the grade is a slide waiting for rain, we talk about a wall or a different route before we spread three loads that end up at the bottom.
The ground in Granite Falls
Properties on the edge of town back into fir and alder. The lawn, if there is one, is a cleared bench. The rest is slope, stump, and shade. We get called when a bank has started to slump after a wet winter, or when a path down to the lower yard has turned into a creek.
Rock walls and a drain at the top of the slope do more than plants will. Beauty bark in the deep shade keeps the weeds down and the mud off the house, but it will not hold a bank by itself. Tree work is practical: limbs over the roof, and sightlines where the forest is closing the drive. Aerator and seed belong on the flat piece only. Treating the whole hillside like a turf job is how you waste a season.
How we do the work
Gravel stays put when it has a compacted base, a fabric or a separation from the clay, a slight crown or a cross slope, and an edge. A load of rock dumped on the grass is a mud pit by spring. We dig out the soft soil, build the base, and top it with the rock you actually walk and drive on.
The top rock is not the same as the base rock. Base is angular and locks. The surface might be smaller crushed rock or a cleaner gravel, depending on whether this is a drive, a dog run, or a path.
What we look at first
- Cars, foot traffic, or both
- How soft the ground is in March
- Where the water crosses the drive today
- An edge against lawn or beds so the rock does not migrate
Edges and weeds
Steel, timber, or a paved border on a walking path. On a farm drive, the ditch is the edge. Weeds in gravel get pulled or treated early, before the root is a shrub. A thick, clean surface grows fewer of them than a dirty thin one.
Fabric
Separation fabric keeps clay from pumping up. It is not weed magic, and it is not a substitute for digging out the mud. We lap it and we cover it. Sun-baked fabric at the edge means the gravel was spread too thin.
Base rock and top rock
The base is larger, angular, and compacted in lifts until it stops moving under the machine. The top is smaller and thick enough to cover, not thick enough to rut into piles. One material dumped once is not a drive section.
More from this crew
- Gravel installation across Snohomish County
- French drain installation in Granite Falls
- Fence installation in Granite Falls
- Hardscaping in Granite Falls
- Paver installation in Granite Falls
- Gravel installation in Arlington
- Gravel installation in Lake Stevens
- Gravel installation in Marysville
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.
