LoamTrail outlook
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Why North Slope dries this way
Terrain & soilNorth Slope is a mountain bike network in the Seattle & Snoqualmie region of WA, riding on loam soil that drains well over terrain that sheds water and dries quickly. Heavy tree cover holds the damp in, so it stays wet longer than the sky overhead would suggest. What really sets the timing here is how quickly that ground gives back a firm, dry surface, not what the day’s forecast says. The terrain here is steep (a 14.7° average grade at 781 ft) and sheds water fast once the rain stops, while the N-facing aspect keeps the dirt shaded for much of the day, so moisture lingers after rain and snow is slow to clear.
Network profile
- Soil
- Loamdrains well
- Drainage
- Sheds waterdries quickly
- Tree cover
- 82%Dense
- Elevation
- 781 ft
- Average grade
- 14.7°
- Predominant aspect
- N-facing
How these factors affect drying
SoilLoam
Loam balances drainage with water retention, so it typically takes a day or two to dry after meaningful rain.
CanopyDense 82%
Heavy tree cover shades the soil and blocks wind, so these trails dry slowly and can hold morning damp even after dry days.
TerrainSheds water
Water runs off this terrain rather than pooling, which helps the surface dry out after rain.
Around North Slope
Trail stewards
Trail work here is done by Friends of Capitol Forest. Support your local builders.
FAQ
Common questionsCan you ride North Slope right now?
As of the latest update, North Slope is Rideable now (PRIME). No significant rain in the forecast. No measurable rain in the past week.
What is the soil and trail surface like at North Slope?
North Slope sits on loam soil that drains well. Loam balances drainage with water retention, so it typically takes a day or two to dry after meaningful rain.
How long does North Slope take to dry after rain?
North Slope usually needs about a day or two to dry after meaningful rain. Its terrain sheds water, which speeds drying. Heavy tree cover slows drying further.
Does North Slope get snow in winter?
Yes. At 781 ft, North Slope typically sees winter snow and freeze-thaw that can pause riding. Loam flags a FROZEN state when the ground is snow-covered or frozen, then clears it as things thaw and dry.
What's the terrain and elevation like at North Slope?
North Slope sits at roughly 781 feet, faces mostly N, and averages a 14.7° grade with about 82% tree cover. That makes it a shady network that holds moisture longer than sunnier neighbors, and the steep grade means it sheds water quickly. Loam models this exact ground against live weather rather than using one regional forecast.
When is the best time of year to ride North Slope?
The reliable season at North Slope runs late spring through fall: at around 781 feet it holds real winter snowpack, and freeze-thaw makes the shoulder seasons hit or miss. Its shady aspect means it needs longer after storms than sunnier networks nearby. Loam flags FROZEN days and posts a live verdict, so the calendar never has to be the tiebreaker.