Porcupine Ridge
ridge in Glacier County, Montana, United States
Porcupine Ridge is a prominent mountain ridge located in the Goat Haunt area of Glacier National Park, in Glacier County of the U.S. state of Montana. This mountain is part of the Livingston Range, and is situated 1.5 mile east of the Continental Divide. Topographic relief is significant as the summit rises approximately 3,900 feet (1,200 meters) above Lake Frances in one mile, and nearly 5,000 feet (1,500 meters) above Waterton Lake in five miles. Precipitation runoff from the mountain drains to the Waterton River via Olson and Valentine Creeks. This geographical feature's name was officially adopted in 1911 by the United States Board on Geographic Names.
Climate
Based on the Köppen climate classification, Porcupine Ridge is located in an alpine subarctic climate zone characterized by long, usually very cold winters, and short, cool to mild summers. Winter temperatures can drop below −10 °F with wind chill factors below −20 °F. This climate supports the remnant of an unnamed glacier on the northeast aspect below the summit.
Geology
Like the mountains in Glacier National Park, Porcupine Ridge is composed of sedimentary rock laid down during the Precambrian to Jurassic periods. Formed in shallow seas, this sedimentary rock was initially uplifted beginning 170 million years ago when the Lewis Overthrust fault pushed an enormous slab of precambrian rocks 3 mi (4.8 km) thick, 50 miles (80 km) wide and 160 miles (260 km) long over younger rock of the cretaceous period.
“Porcupine Ridge” enters the record as ridge in Glacier County, Montana, United States. Crown Archives preserves that source wording while asking what Porcupine, Ridge and ridge can confirm, complicate or overturn.
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“Porcupine Ridge” is worth following because a concise public description often conceals a longer documentary argument. Here, Porcupine, Ridge and ridge provides the most credible route into that argument.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Aug 16, 2026. The linked authority identifier is Q49695501. Authority coordinates are 48.918, -113.962. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1911.
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This entry incorporates text from “Porcupine Ridge” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.