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Harmon Lake

Mountain bike trail conditions · North Dakota 46.932° N  100.961° W   1,732 FT Verified

PRIME: Rideable now

Thu 3am Conditions turn Caution.

Recent rain
0.3″ of rain, 6d ago
Today
66°Fcloudy
  • Thu 9/10, no measurable rain, modeled conditions: PRIME
  • Fri 9/11, no measurable rain, modeled conditions: PRIME
  • Sat 9/12, no measurable rain, modeled conditions: PRIME
  • Sun 9/13, no measurable rain, modeled conditions: PRIME
  • Mon 9/14, 0.26 inches of rain, modeled conditions: PRIME then CAUTION then STAY OFF then CAUTION then PRIME
  • Tue 9/15, no measurable rain, modeled conditions: PRIME
  • Wed 9/16, no measurable rain, modeled conditions: PRIME
  • Thu 9/17, no measurable rain, modeled conditions: PRIME
  • Fri 9/18, no measurable rain, modeled conditions: PRIME
  • Sat 9/19, no measurable rain, modeled conditions: PRIME
  • Today, Sun 9/20, no measurable rain, modeled conditions: PRIME
  • Mon 9/21, no measurable rain, modeled conditions: PRIME
  • Tue 9/22, no measurable rain, modeled conditions: PRIME
  • Wed 9/23, 0.24 inches of rain, modeled conditions: PRIME then CAUTION
  • Thu 9/24, no measurable rain, modeled conditions: CAUTION then PRIME, forecast preview, beyond the free window
  • Fri 9/25, no measurable rain, modeled conditions: PRIME, forecast preview, beyond the free window

Updated Sep 20, 2026, 13:48 UTC. Modeled hourly. Verdict last changed: Sep 15. Official closures and current trail conditions take priority.

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Is Harmon Lake rideable today?

Yes. The live verdict is PRIME, rideable now. 0.3″ of rain, 6d ago.

CHANGED
Mon 148pm
Dried back to PRIME.
Mon 1411am
Rain moved in. Verdict dropped to CAUTION.
Over the tracked history, Harmon Lake has been rideable on 9 of the last 10 days, and under a caution advisory on 1. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Harmon Lake

Harmon Lake is a mountain bike trail network in North Dakota. The soil is loam and drains well. With little tree cover, the ground gets plenty of sun and wind. The terrain averages a 1.6° slope at 1,732 ft and mainly faces NNW. Its nearly flat slopes can hold water in flat stretches.

How we check ourselves

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.

CanopyOpen 19%

Little tree cover means full sun and wind, so these trails are among the fastest to rebound after rain.

TerrainHolds water

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

FAQ

Can you ride Harmon Lake right now?

The current estimate for Harmon Lake is PRIME: rideable now. No significant rain in the forecast. 0.3″ of rain, 6d ago.

Is Harmon Lake muddy right now?

Loam currently estimates dry conditions (PRIME). 0.3″ of rain, 6d ago.

What is the soil and trail surface like at Harmon Lake?

Harmon 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 Harmon Lake take to dry after rain?

Harmon Lake usually needs about a day or two to dry after meaningful rain. Its terrain holds water in low spots, which slows it.

Can you ride Harmon Lake after rain?

Drying time depends on how much rain fell and the weather that follows. Wait until the surface is firm. Check the current estimate before heading out, and turn back if your tires leave ruts.

Does Harmon Lake get snow in winter?

Yes. At 1,732 ft, Harmon Lake 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 Harmon Lake?

Harmon Lake sits at roughly 1,732 feet, faces mostly NNW, and averages a 1.6° grade with about 19% tree cover. It is slower to dry where it faces north, and the nearly flat terrain holds puddles in the flats.

When is the best time of year to ride Harmon Lake?

Snow can limit riding at Harmon Lake in winter, at around 1,732 feet. Spring snowmelt and fall freezes can also affect conditions. Its shady aspect means it needs longer after storms than sunnier networks nearby. Check the current conditions before planning a ride.

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Network profile

Network profile

Soil
Loamdrains well
Drainage
Holds waterdries slowly
Tree cover
19%Open
Elevation
1,732 ft
Average grade
1.6°
Predominant aspect
NNW-facing

Around Harmon Lake

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