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Sweetwater Reservoir

Mountain bike trail conditions · San Diego, CA 32.690° N  116.979° W   351 FT Verified

PRIME: Rideable now

No significant rain in the forecast.

Recent rain
No measurable rain in the past week
Today
77°Fcloudy
  • Thu 9/10, no measurable rain, modeled conditions: DUSTY then 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, no measurable rain, modeled conditions: 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, no measurable rain, modeled conditions: PRIME
  • Thu 9/24, no measurable rain, modeled conditions: 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, 14:18 UTC. Modeled hourly. Unchanged for 10+ days. Official closures and current trail conditions take priority.

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Is Sweetwater Reservoir rideable today?

Yes. The live verdict is PRIME, rideable now. No measurable rain in the past week.

Over the tracked history, Sweetwater Reservoir has been rideable on 10 of the last 10 days. Loam also considers soil, slope, tree cover, and drying time.

Soil and terrain at Sweetwater Reservoir

Sweetwater Reservoir is a mountain bike trail network in San Diego, CA. The soil is loam and drains well. With little tree cover, the ground gets plenty of sun and wind. The terrain averages a 5.5° slope at 351 ft and mainly faces WNW. Its rolling slopes drain steadily.

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 0%

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

TerrainModerate

Terrain here drains at a moderate pace. It neither sheds nor holds water strongly.

FAQ

Can you ride Sweetwater Reservoir right now?

The current estimate for Sweetwater Reservoir is PRIME: rideable now. No significant rain in the forecast. No measurable rain in the past week.

Is Sweetwater Reservoir muddy right now?

Loam currently estimates dry conditions (PRIME). No measurable rain in the past week.

What is the soil and trail surface like at Sweetwater Reservoir?

Sweetwater Reservoir 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 Sweetwater Reservoir take to dry after rain?

Sweetwater Reservoir usually needs about a day or two to dry after meaningful rain. Its terrain drains at a moderate pace.

Can you ride Sweetwater Reservoir 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 Sweetwater Reservoir get snow in winter?

Rarely. Sweetwater Reservoir sits low and mild enough (around 351 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 Sweetwater Reservoir?

Sweetwater Reservoir sits at roughly 351 feet, faces mostly WNW, and averages a 5.5° grade with about 0% tree cover. It is exposed to afternoon sun, and the rolling terrain drains steadily.

When is the best time of year to ride Sweetwater Reservoir?

Snow rarely affects Sweetwater Reservoir. Check recent rain and allow time for the ground to dry. The live verdict above reflects today.

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Network profile

Network profile

Soil
Loamdrains well
Drainage
Moderateeven drying
Tree cover
0%Open
Elevation
351 ft
Average grade
5.5°
Predominant aspect
WNW-facing

Around Sweetwater Reservoir