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Alturas Lake Creek to Mattingly Divide

Sawtooth Mountains

Sun Valley + Sawtooth Mountains, Idaho

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Alturas Lake Creek to Mattingly Divide

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  • Sign at the Alturas Creek trailhead identifying trail uses.- Alturas Lake Creek to Mattingly Divide
  • Junction at the Alturas Creek/Alpine Creek Trail.- Alturas Lake Creek to Mattingly Divide
  • Trail sign after the Alturas/Alpine junction.- Alturas Lake Creek to Mattingly Divide
  • Bridge over Alturas Lake Creek.- Alturas Lake Creek to Mattingly Divide
  • Alturas Lake Creek from the bridge.- Alturas Lake Creek to Mattingly Divide
  • Trail sign at the junction with Eureka Gulch.- Alturas Lake Creek to Mattingly Divide
  • Fall colors and a rocky section of trail along Alturas Lake Creek.- Alturas Lake Creek to Mattingly Divide
  • A steep section of rutted trail as the trail climbs toward the head of the canyon.- Alturas Lake Creek to Mattingly Divide
  • Looking down the Alturas Lake Creek Canyon.- Alturas Lake Creek to Mattingly Divide
  • Trail sign at the Alturas/Mattingly junction.- Alturas Lake Creek to Mattingly Divide
  • The view from an open meadow looking down Alturas Lake Creek Canyon below the Ross Divide.- Alturas Lake Creek to Mattingly Divide
  • Trail sign at the Ross/Johnson junction at the head of Alturas Lake Creek Canyon.- Alturas Lake Creek to Mattingly Divide
  • Looking down Johnson Creek.- Alturas Lake Creek to Mattingly Divide
  • Looking down onto the Johnson Creek Trail.- Alturas Lake Creek to Mattingly Divide
  • Wilderness boundary sign at the Mattingly Divide.- Alturas Lake Creek to Mattingly Divide
  • Open meadows at the Mattingly Divide.- Alturas Lake Creek to Mattingly Divide
Overview + Weather
Pros: 
Mountain bike accessible. Motorcycle accessible. Nice shaded canyon walk. Solitude.
Cons: 
Open to motorcycles. Not many good views.
Region:
Sun Valley + Sawtooth Mountains, ID
Congestion: 
Low
Pets allowed: 
Yes
Net Elevation Gain: 
1,767.00 ft (538.58 m)
Parking Pass: 
Not Required
Preferable Season(s):
Spring, Summer, Fall
Suitable for:
Hiking, Biking, Horseback
Total Distance: 
11.80 mi (18.99 km)
Trail type: 
There-and-back
Trailhead Elevation: 
7,080.00 ft (2,157.98 m)
Current Local Weather:
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Hike Description

Hike Description

Contributor

Alturas Lake Creek canyon is also the jumping off point for the Alpine Creek and Eureka Gulch adventures.  These hikes peel off within the first mile.  At the head of the canyon, Alturas Lake Creek connects over three divides to the Middle Fork and South Fork of the Boise River.

Alturas Lake Creek to Mattingly Divide

The gentle divides at the top of Alturas Canyon are the easiest routes from the Sawtooth Valley into Boise River drainages. Many people are surprised to realize that Atlanta is only 17 miles from the trailhead. During the late 1800s, trails over the Mattingly, Ross, and Johnson Divides were important travel corridors connecting the Boise Basin mines to the Yankee Fork (northeast of Stanley) and Wood River districts. There are records of at least one shipment of ore being packed from the Yankee Fork over Mattingly Divide to the Buffalo Mill at Atlanta for processing.

Today, the high cirques and alpine lakes are the proverbial gold and silver of the modern era. Since the headwaters of Alturas Lake Creek are lacking in both, it sees much less traffic than drainages further to the north. There are some beautiful meadows about halfway out of the canyon. Hikers going all the way to the divide may want to continue down into the Mattingly meadows or up to Mattingly Lake. There are also some easier peaks to climb near the divide (Peaks 9,536 or 9,335) that offer great views to the north.

Mountain Bikes

When the Sawtooth Wilderness was created in 1972, there was an old mining road that extended up the canyon to the mouth of Jakes Gulch. As a result, Alturas was kept outside the wilderness boundary. The road has since been closed and rehabilitated into a trail, but the canyon remains open to motorcycles and other wheeled use. Mountain bikers will find the 8-plus-mile out-and-back ride is quite fun. Riders with a penchant for adventure can drop into the North Fork of the Ross Fork or Johnson Creek to create longer loops with more variable riding conditions. Using a mountain bike to “shorten” the out-and-back distance makes adventures in the head of the Mattingly drainage a reasonable day trip.

Additional Adventures

The Alturas Lake Creek trail connects to several adventures including Mattingly Creek in the M.F. Boise drainage which takes hikers down to the remote region of Atlanta.  It also links into the Johnson/N.F. Ross Creek loop at the head of the South Fork of the Boise.  This is a fairly remote region that probably sees more motorcycle and mountain bike use than hiking or backpacking.

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(14 within a 30 mile radius)

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(78 within a 30 mile radius)

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Published in collaboration with Idaho River Publications

Our mission is to inspire adventure with beautiful, comprehensive and waterproof map-based guidebooks.  Owner, publisher, and photographer Matt Leidecker, grew up exploring and guiding on the rivers in central Idaho.  His award winning Middle Fork of the Salmon River – A Comprehensive Guide is the standard by which other river guidebooks are measured.  Printed on virtually indestructible YUPO paper, IRP guides are truly unique all-in-one resources for adventure.  Each book is loaded with full-color maps, stunning photographs, and information on the history, geology, and wildflowers.  Visit Idaho River Publications to explore our guidebooks to the Rogue River in Oregon and the mountains of Central Idaho.

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