Gannett Glacier is the largest glacier in the Rocky Mountains within the United States. The glacier is located on the east and north slopes of Gannett Peak, the highest mountain in Wyoming, on the east side of the Continental Divide in the Wind River Range. Gannett is but one of dozens of glaciers located in the Fitzpatrick Wilderness of Shoshone National Forest.[2]
As is true with many glaciers around the world, Gannett Glacier is slowly disappearing. Photographic evidence clearly demonstrates that there has been an enormous reduction in the area of the glacier since the 1920s. The area of the glacier was estimated in 1950 to be 4.6 square kilometres (1,137 acres) and was measured in 1999 to be 3.63 square kilometres (897 acres). Measurements taken in 1958 and again in 1983 showed a depth reduction of 18.6 metres (61 ft) over 25 years.[3] A general warming pattern and a reduction in moisture is widely believed to be the reason for the glacier retreating. Numerous other glaciers are located in the immediate area including six more that are within the top ten in size within the Rocky Mountains of the U.S.[3]
In a 1989 study, both Gannett and Dinwoody glaciers were researched to determine the amount of melt water they supplied to streams. Both glaciers supply melt water which flows into Dinwoody Creek, which in turn flows into the Wind River. The melt water was found to have contributed increasingly lower amounts to the total water supplied to Dinwoody Creek. This has been attributed to the glaciers thinning and retreating, especially since 1950, when Gannett Glacier was measured to be almost 20 percent larger than in 1999.[4] The impact on reduced stream flow from Gannett Glacier due to glacial retreat affects more than just the amount of water available for the local ecosystem and downstream agricultural and ranching interests.
^"Gannett Glacier". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved August 11, 2012.
^Gannett Peak, WY (Map). TopoQwest (United States Geological Survey Maps). Retrieved August 12, 2012.
^Pochop, L.; R. Marston; G. Kerr; D. Veryzer; M. Varuska; R. Jacobel (July 9–11, 1990). "Glacial Icemelt in the Wind River Range, Wyoming". Watershed Planning and Analysis in Action Symposium Proceedings of IR Conference Watershed Mgt/IR Div/ASCE. Water Resources Data System Library. Retrieved August 12, 2012.
GannettGlacier is the largest glacier in the Rocky Mountains within the United States. The glacier is located on the east and north slopes of Gannett...
outside of Colorado. The 896-acre (3.63 km2) GannettGlacier, which is likely the largest single glacier in the American portion of the Rocky Mountains...
for Henry Gannett. One arm of the Knik Glacier flows from the ice fields of Mount Gannett's north and east slopes, and the Colony Glacier rises on the...
Example of a mountain glacier retreat: White Chuck Glacier, Washington The retreat of glaciers since 1850 is well documented and is one of the effects...
G.S. Gannett received an honorary LL.D from Bowdoin College in 1889. Gannett Peak, the highest peak in Wyoming, and the related GannettGlacier was named...
largest glaciers in the U.S. Rocky Mountains. GannettGlacier which flows down the north slope of Gannett Peak, is the largest single glacier in the Rocky...
GannettGlaciers, during the period from 1958 to 1983, the thickness of these glaciers was reduced 77 and 61 ft (23 and 19 m), respectively. Gannett Glacier...
eastern slopes of the mountain are covered by a section of GannettGlacier, the largest glacier in the American Rocky Mountains. An arête to the northeast...
streams and rivers from glacier retreat of both Dinwoody and GannettGlaciers. List of glaciers in the United States "Dinwoody Glacier". Geographic Names Information...
glacier is situated below the west flank of Gannett Peak, the tallest mountain in Wyoming. "Minor Glacier". Geographic Names Information System. United...
on the southeast flank of Gannett Peak, the tallest mountain in Wyoming. Gooseneck Glacier is separated from Dinwoody Glacier by a rocky outcropping and...
August 26, 2012. Gannett Peak, WY (Map). TopoQwest (United States Geological Survey Maps). Retrieved August 26, 2012. List of glaciers in the United States...
August 26, 2012. Gannett Peak, WY (Map). TopoQwest (United States Geological Survey Maps). Retrieved August 26, 2012. List of glaciers in the United States...
The Dinwoody Glacier is on the eastern slopes of Pinnacle Ridge. "Pinnacle Ridge, Wyoming". Peakbagger.com. Retrieved May 26, 2013. Gannett Peak, WY (Map)...
Pedestal Peak. The glacier flows east into a proglacial lake and shares a glacial margin with Grasshopper Glacier to the north. Gannett Peak, WY (Map). TopoQwest...
August 25, 2012. Gannett Peak, WY (Map). TopoQwest (United States Geological Survey Maps). Retrieved August 25, 2012. List of glaciers in the United States...
August 25, 2012. Gannett Peak, WY (Map). TopoQwest (United States Geological Survey Maps). Retrieved August 25, 2012. List of glaciers in the United States...
Phoenix flights after 3 months. Here's what happened". The Arizona Republic. Gannett. Retrieved August 19, 2021. "Tucson International Airport gains new nonstop...
Legion Peak, the glacier elevation ranges from 12,400 to 11,800 ft (3,800 to 3,600 m). American Legion Glacier is just west of Twins Glacier and .50 mi (0...
noise, due principally to the action of the tides." The map of Yale Glacier by Gannett, the description by Gilbert, and the photographs by other members...
August 25, 2012. Gannett Peak, WY (Map). TopoQwest (United States Geological Survey Maps). Retrieved August 25, 2012. List of glaciers in the United States...
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