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Blue Marsh Lake

Mountain bike trail conditions · Lehigh Valley, PA 40.384° N  76.041° W   276 FT

STAY OFF: Active damage risk

No significant rain before then.

Recent rain
3.1″ of rain, 3h ago
Est. time to dry
~4 days
Today
79°Fheavy rain
Last 10 daysoldest to newest

Updated Aug 21, 2026, 00:00 UTC. Modeled hourly. Official closures and current trail conditions take priority.

Trail outlook

7 days back · 4 ahead
0.3″
0.4″
3.1″
0.1″
FORECAST
PRIME 7d 2026-08-13: 0.00 inches of rain, representative trail outlook PRIME
PRIME 6d 2026-08-14: 0.00 inches of rain, representative trail outlook PRIME
PRIME 5d 2026-08-15: 0.00 inches of rain, representative trail outlook PRIME
PRIME 4d 2026-08-16: 0.30 inches of rain, representative trail outlook PRIME
PRIME 3d 2026-08-17: 0.40 inches of rain, representative trail outlook PRIME
PRIME 2d 2026-08-18: 0.00 inches of rain, representative trail outlook PRIME
PRIME 1d 2026-08-19: 0.00 inches of rain, representative trail outlook PRIME
79° CAUTION Today 2026-08-20: 3.10 inches of rain, Heavy rain, representative trail outlook CAUTION
81° STAY OFF FRI 2026-08-21: 0.00 inches of forecast rain, Partly cloudy, representative trail outlook STAY OFF
74° STAY OFF SAT 2026-08-22: 0.00 inches of forecast rain, Overcast, representative trail outlook STAY OFF
80° STAY OFF SUN 2026-08-23: 0.10 inches of forecast rain, Light rain, representative trail outlook STAY OFF
79° PRIME MON 2026-08-24: 0.00 inches of forecast rain, Partly cloudy, representative trail outlook PRIME
Measured rain Forecast rain Above soft threshold (0.5″)
Over the tracked history, Blue Marsh Lake has been rideable on 9 of the last 10 days, and too wet to ride on 1. Daily trail markers are representative daytime outlooks. Weather is one input. The rideability verdict also accounts for soil, terrain, canopy, and drying time.
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Why Blue Marsh Lake dries this way

Terrain & soil

Blue Marsh Lake (Lehigh Valley, PA) rides on loam soil that drains well over terrain that holds water and dries slowly. Heavy tree cover holds the damp in, so it stays wet longer than the sky overhead would suggest. Loam reads that exact ground against live weather, rather than leaning on a regional forecast that can’t tell you what the dirt is doing. The S-facing aspect soaks up sun through the middle of the day, which speeds drying and opens the season earlier, and the nearly flat terrain, about a 1.7° average grade at 276 ft, lets water sit, so the flat stretches are the last to firm up.

Network profile

Soil
Loamdrains well
Drainage
Holds waterdries slowly
Tree cover
75%Dense
Elevation
276 ft
Average grade
1.7°
Predominant aspect
S-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 75%

Heavy tree cover shades the soil and blocks wind, so these trails dry slowly and can hold morning damp even after dry days.

TerrainHolds water

Water tends to pool and linger here rather than running off, so the surface can stay damp well after the weather clears.

Around Blue Marsh Lake

FAQ

Common questions
Can you ride Blue Marsh Lake right now?

As of the latest update, Blue Marsh Lake is Active damage risk (STAY OFF). Expected rideable in ~4 days. No significant rain before then. 3.1″ of rain, 3h ago.

What is the soil and trail surface like at Blue Marsh Lake?

Blue Marsh Lake 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 Blue Marsh Lake take to dry after rain?

Blue Marsh Lake usually needs about a day or two to dry after meaningful rain. Its terrain holds water in low spots, which slows it. Heavy tree cover slows drying further.

Does Blue Marsh Lake get snow in winter?

Rarely. Blue Marsh Lake sits low and mild enough (around 276 ft) that snow seldom affects riding; conditions are driven by rain and drying. Loam still flags FROZEN on the rare freeze.

What's the terrain and elevation like at Blue Marsh Lake?

Blue Marsh Lake sits at roughly 276 feet, faces mostly S, and averages a 1.7° grade with about 75% tree cover. That makes it a sunny, fast-drying network, and the nearly flat grade means it holds puddles in the flats. Loam models this exact ground against live weather rather than using one regional forecast.

When is the best time of year to ride Blue Marsh Lake?

There is no real off-season at Blue Marsh Lake: snow rarely interferes, so good days come down to rain and how fast the dirt dries. Its sunny aspect helps it come back fast after storms. The live verdict above reflects today.