Keep snowblower and shovels clear of drain paths
Where you pile snow matters. Snow piled over catch basins, yard drains, or downspout outlets blocks the meltwater that needs to move away from your foundation during the frequent warm-spell melt cycles of a North Idaho winter.
Post Falls typically sees 3–6 significant melt events between November and March. These freeze-thaw cycles can move more water in a week than a summer rainstorm. Blocked drainage during these events is a primary cause of foundation water intrusion and ice-dam formation.
Step-by-Step
- 1
Locate all drainage outlets before first snow
Walk your property in November and identify: downspout outlets, area drain grates, French drain outlets, swale channels, and any low-point drain structures. Mark them with orange flags or stakes you can see in snow.
- 2
Establish no-pile zones around drains
When using a snowblower or plowing, never direct snow toward drain grates, over swales, or against the foundation. Establish a clear mental map of where snow should NOT go.
- 3
Clear drain grates after major snowfall
After each significant snowfall, physically uncover area drain grates and downspout outlets. A 5-minute walk-through prevents a weekend of water damage cleanup.
- 4
Create a path for melt water from foundation
Ensure that during warm-weather melt, water can flow away from the foundation. If snow is piled against the house, create a channel through the snow pile for melt to escape.
- 5
Watch for ice dam formation on rooflines
Ice dams form when roof heat melts snow that refreezes at the cold eave. The resulting dam backs water under shingles. Adequate attic insulation is the root fix, but a roof rake after heavy snowfall prevents accumulation that leads to dams.
- The most dangerous drain-blocking scenario: snow piled against the house + warm melt event + refreeze before the water can escape = ice wedge against the foundation that can crack masonry.
- Window well covers in winter prevent snow accumulation that creates drainage pressure directly at the most vulnerable foundation opening.
- A frozen downspout outlet is a common culprit — the ice plug blocks drainage and backs water to the foundation. Clear downspout outlets after each freeze cycle.
When to Call LandscapePros
Our commercial snow management contracts include drainage path protocols. If your property has chronic winter drainage issues or ice formation near the foundation, ask us to evaluate grading and drainage on a spring site visit.
Let us handle the whole calendar.
From spring cleanup to winter dormancy — we know what North Idaho landscapes need, season by season.
Keep snowblower and shovels clear of drain paths: Questions We Get Asked
Post Falls typically sees 3–6 significant melt events between November and March. These freeze-thaw cycles can move more water in a week than a summer rainstorm. Blocked drainage during these events is a primary cause of foundation water intrusion and ice-dam formation.
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