How to Prepare Your Yard for Heavy Winter Rain in Northwest Washington (Checklist)
Heavy winter rain is hard on yards across Skagit, Whatcom, and Snohomish County. By November and December the ground is already saturated, so every new storm turns into runoff, and that’s when a small drainage problem becomes a flooded patio, a washed-out slope, or a lawn that stays soggy until spring.
The good news is that most of the prep work is simple, and doing it now, before the heavy rain, makes a big difference. This guide walks through what to check, what to do before and after a storm, and which problems are worth calling a professional about.
The Pre-Winter Yard Checklist
1. Clear Drains, Grates, and Downspouts
Leaves, needles, and debris are the most common reasons drainage fails. Clear gutters and downspouts, and clean off any catch basin grates, yard drains, and open French drain surfaces. If you have a catch basin, check that water can flow down into it and out through the outlet.
2. Check Where Your Downspouts Empty
A downspout that drops water right next to the house or onto a slope sends it somewhere you don’t want it. Make sure the water is carried well away from the foundation, and look at the exit point for erosion or
pooling.
3. Look for Low Spots and Soggy Areas
Walk the yard, especially after a rain, and note where water sits, runs, or seeps. Mark low spots and wet patches. These are the places where a French drain, catch basin, or regrading usually makes the
most difference.
4. Make Sure Water Is Moving Away From the House
The ground near your home should slope away from it, not toward it. If water collects along the foundation, patio, or garage, that’s a sign
the grading needs
attention.
5. Check Retaining Walls & Rock
Walls
Look for leaning, bulging, new cracks, or gaps between blocks. Make sure any weep holes or drain outlets at the base are open. A wall under pressure from saturated soil can move quickly. For what to look for, see our guide on leaning and cracking retaining walls.
6. Look at Pavers and Walkways
Check for low spots, wobbling pavers, washed-out joint sand, and water running onto the surface. These are early signs that water is getting into the base. See our guide on sinking and cracking pavers.
7. Refresh Mulch and Rock Where It’s Thin
Mulch and river rock that have thinned out or washed away leave soil exposed. Top up beds, and use river rock where water tends to flow, like around downspout outlets. Keep organic mulch back from the foundation and siding.
8. Adjust Your Irrigation
If you have a sprinkler or drip system, switch it off or cut back the schedule for the wet season, and use a rain sensor if you have one. Watering on top of heavy rain adds to the saturation problem.
9. Protect New Lawns and Plantings
Newly seeded, hydroseeded, or sodded lawns are the most vulnerable to washout. Watch them closely, and make sure water has a route away from them. See our care guides for new hydroseeded lawns and new sod.
H2
Signs the Problem Is Bigger Than a Quick Fix
Clearing a grate helps, but some problems point to something deeper:
Standing water that takes more than a day or two to drain
The same spot flooding every time it rains
Water pooling against the foundation, patio, or garage
A lawn that stays soggy and squishy all winter
Soil washing downhill
A retaining wall that is leaning, cracking, or bulging
Pavers that keep sinking in the same area
These usually mean water has no good path away from the area, and the fix is a drainage system, not a cleanup.
Want Help Before the Rain Hits?
If your yard checklist turns up a problem, the sooner it’s looked at the better. Get a free on-site drainage assessment from our team, and we’ll walk your property, find where the water is coming from, and recommend a fix.
Whether you’re in Mount Vernon, Oak Harbor, Bellingham, Ferndale, Marysville, Lake Stevens, or on Camano Island, contact us today for a free consultation. We provide hardscape and landscape serevice throughout Skagit, Whatcom, and Snohomish County and on Camano Island.
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