Idaho · Hiking

Sagehen Reservoir

4.4 mi
loop
98 ft
climb
4,972 ft
high point
Loop
route
Jun–Sep
best months

Is Sagehen Reservoir open right now?

Closure in the area

There's a closure order in Boise National Forest. It doesn't name Sagehen Reservoir, so check the source for the area it covers.

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

Sagehen Reservoir is a loop hike of about 4.4 miles in the Emmett Ranger District of Boise National Forest in Idaho, managed by the Forest Service. The trail is rated hard, and the one-way climb is about 98 feet, with the route running from a low point of about 4,886 feet to a high of about 4,972 feet. Summer is the most comfortable time to go. Typical averages from a nearby weather station show July and August highs around 82°F with only four or five wet days a month, while winter highs stay near freezing. The trail is natural-surface and bikes are allowed. It is not an accessible trail. Antelope Campground and the Antelope fishing access sit about 0.9 miles away. Sagehen C and Sagehen Annex are both about a mile off.

Local outfitters

Not on Roamze yet. Their page has how to reach them.

  • Best time to go · Jun–Sep

    Best time to visit Sagehen Reservoir

    Best months: June–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

      32° / 15°

      14 wet

    2. Feb

      37° / 17°

      12 wet

    3. Mar

      45° / 24°

      14 wet

    4. Apr

      53° / 30°

      13 wet

    5. May

      63° / 37°

      13 wet

    6. Jun

      70° / 43°

      10 wet

    7. Jul

      82° / 48°

      5 wet

    8. Aug

      82° / 47°

      4 wet

    9. Sep

      73° / 40°

      6 wet

    10. Oct

      58° / 31°

      10 wet

    11. Nov

      42° / 24°

      14 wet

    12. Dec

      31° / 16°

      16 wet

    Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Cascade 1 Nw, ID, 15.5 mi away at 4,896 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.