Lost River Range

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Lost River Range
LostRiverRangeID.jpg
Lost River Range, looking southwest from the Lemhi Range
Highest point
Peak Borah Peak
Elevation 12,662 ft (3,859 m)
Coordinates 44°08′15″N 113°46′52″W / 44.1373891°N 113.78110123°W / 44.1373891; -113.78110123Coordinates: 44°08′15″N 113°46′52″W / 44.1373891°N 113.78110123°W / 44.1373891; -113.78110123
Dimensions
Length 79 mi (127 km) N/S
Width 67 mi (108 km) E/W
Area 1,799 sq mi (4,660 km2)
Geography
Country United States
State Idaho

The Lost River Range is a high mountain range of the Rocky Mountains, located in central Idaho, in the northwestern United States.[1]

It runs southeast for approximately 75 miles (121 km) from the Salmon River near the community of Challis to the Snake River Valley near Arco. To the west are the valleys of the Salmon and the Big Lost Rivers, while to the east are the Little Lost River and Pashimeroi Valleys.

The range starts at the east bank of the Salmon River, at an elevation of about 5,000 feet (1,500 m). It quickly rises to Grouse Creek Mountain (11,085 ft, 3378 m) and Dickey Peak (11,141 ft, 3395 m), and then descends to Double Springs Pass, location of one of just two roads to cross the range. Nearby is an interpretive site explaining the effects of the magnitude 6.9 Borah Peak Earthquake that hit the range on October 28, 1983. The Big Lost River Valley fell and the Lost River Range rose, leaving a fault scarp of up to 14 ft (4.3 m) along the base of the mountains.

Borah Peak, Idaho, looking east (note 1983 earthquake fault).

The range then rises into its high central section, which includes many of the state's highest peaks. Borah Peak, the highest, climbs to 12,662 ft (3,859 m). Further south are Mount Idaho (12,065 ft, 3677 m), Leatherman Peak (12,228 ft, 3727 m), Mount Church (over 12,200 ft, 3720 m), Mount Breitenbach (12,140 ft, 3700 m), and Lost River Mountain (12,078 ft, 3681 m). To the east of this section of the range lie the remote canyons of the Upper Pashimeroi Valley, including scenic Merriam Lake.

Panorama of the Upper Pashimeroi Valley, including Leatherman Peak (center)

The range then descends to Pass Creek Summit, the second road to cross its crest. It continues to King Mountain (10,612 ft, 3235 m), a favorite site for hang gliders. Finally it descends sharply to the Snake River Valley near the community of Arco, at an elevation of 5,300 ft (1,600 m).

Merriam Lake, Idaho, in the Lost River Range.

Peaks[edit]

The ten highest peaks of the Lost River Range[2]
Mountain Peak Elevation Prominence Isolation Location
Borah Peak 12,661 ft
3859 m
5,981 ft
1823 m
151 mi
243 km
44°08′15″N 113°46′52″W / 44.137376°N 113.781122°W / 44.137376; -113.781122 (Borah Peak)
Leatherman Peak 12,228 ft
3727 m
1,667 ft
508 m
4.5 mi
7.3 km
44°04′55″N 113°43′59″W / 44.082038°N 113.733004°W / 44.082038; -113.733004 (Leatherman Peak)
Mount Church 12,201 ft
3719 m
922 ft
281 m
1.5 mi
2.4 km
44°03′58″N 113°42′48″W / 44.066058°N 113.713397°W / 44.066058; -113.713397 (Mount Church)
Mount Breitenbach 12,139 ft
3700 m
620 ft
189 m
2.0 mi
3.2 km
44°03′55″N 113°40′22″W / 44.065166°N 113.672913°W / 44.065166; -113.672913 (Mount Breitenbach)
Lost River Peak 12,077 ft
3681 m
676 ft
206 m
1.8 mi
3.0 km
44°02′32″N 113°39′17″W / 44.042135°N 113.654658°W / 44.042135; -113.654658 (Lost River Mountain)
Mount Idaho 12,064 ft
3677 m
1,063 ft
324 m
2.2 mi
3.5 km
44°06′22″N 113°46′40″W / 44.106047°N 113.777803°W / 44.106047; -113.777803 (Mount Idaho)
Donaldson Peak 12,024 ft
3665 m
305 ft
93 m
0.7 mi
1.1 km
44°03′51″N 113°42′02″W / 44.064177°N 113.700468°W / 44.064177; -113.700468 (Donaldson Peak)
USGS Peak 11,982 ft
3652 m
1,781 ft
543 m
4.1 mi
6.7 km
44°00′48″N 113°34′55″W / 44.013325°N 113.581851°W / 44.013325; -113.581851 (USGS Peak)
No Regret Peak 11,972 ft
3649 m
253 ft
77 m
0.8 mi
1.2 km
44°04′15″N 113°41′18″W / 44.070711°N 113.688291°W / 44.070711; -113.688291 (No Regret Peak)
Peak 11,947 11,969 ft
3648 m
607 ft
185 m
0.9 mi
1.4 km
44°05′37″N 113°46′21″W / 44.093748°N 113.772629°W / 44.093748; -113.772629 (Peak 11967)

References[edit]

  1. ^ "Lost River Range". Geographic Names Information System. United States Geological Survey. Retrieved October 13, 2012. 
  2. ^ "Lost River Range". PeakBagger. Retrieved October 13, 2012. 

External links[edit]