California · Rock climbing · Pioneer

Alpha Quadrant

Alpha Quadrant is a California bouldering crag with 14 routes.

14 routes
V0 – V4
Bouldering

Is Alpha Quadrant open right now?

Alert in the area

The Forest Service lists 3 alerts for Eldorado National Forest.

As of · Source: USFS · Eldorado National Forest. Agencies don't list every closure — check before you go.

Best time to visit Alpha Quadrant

Best months: May–September. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

  1. Jan

    43° / 18°

    9 wet

  2. Feb

    43° / 19°

    9 wet

  3. Mar

    48° / 24°

    10 wet

  4. Apr

    53° / 28°

    8 wet

  5. May

    62° / 33°

    7 wet

  6. Jun

    72° / 38°

    3 wet

  7. Jul

    80° / 43°

    2 wet

  8. Aug

    80° / 41°

    2 wet

  9. Sep

    73° / 35°

    3 wet

  10. Oct

    62° / 29°

    5 wet

  11. Nov

    51° / 23°

    7 wet

  12. Dec

    43° / 18°

    10 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at South Lake Tahoe Ap, CA, 28.7 mi away at 6,314 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Closures we've recorded since August 2026

  • Fire Restrictions are in Effect Forest Wide

    Eldorado National Forest · Order dated September 22, 2026; seen Aug 23, 2026, no lift recorded · Forest Service

Alpha Quadrant is a bouldering area in the Amador Ranger District of Eldorado National Forest in California, managed by the Forest Service. It sits among a cluster of climbing areas, with Beta Quadrant and Gamma Quadrant each about 0.1 mile away. The area is a bouldering destination, with 14 routes all listed as boulder problems. Grades run from V0 to V4, with the median at V2. Among the named routes are Big Friendly Giant and Oyster Direct at V0, Dual Wield and Greatsword at V2, and Noghri Throat Slitter at V4. Summer is the most comfortable time to visit. Typical averages from a nearby weather station at South Lake Tahoe show July and August highs around 80°F with lows in the low 40s and only about two wet days a month. Winter is much colder, with January highs near 43°F and lows around 18°F. Salt Springs Reservoir is about 1.2 miles away, and Bear River Group Campground is about 1.3 miles away. Paddlers can reach Cole Creek, about 2.8 miles off, and Bear River, about 3.3 miles away.

Routes (14)

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