Grinnell Glacier is in the heart of Glacier National Park in the U.S. state of Montana. The glacier is named for George Bird Grinnell, an early American conservationist and explorer, who was also a strong advocate of ensuring the creation of Glacier National Park. The glacier is in the Lewis Range and rests on the north flank of Mount Gould at an altitude averaging 7,000 feet (2,100 m), in the Many Glacier region of the park.
Swiftcurrent Glacier is in Glacier National Park in the U.S. state of Montana.The glacier is on the east side of the Continental Divide arête known as the Garden Wall. Swiftcurrent Glacier is one of several glaciers that are being monitored to determine stream flow alterations that occur due to glacial retreat. Compared to other glaciers in Glacier National Park, Swiftcurrent Glacier has experienced relatively slow retreat. As of 2005, the glacier had an area of 55 acres (0.22 km2), a 14 percent reduction since 1966.
Andrews Glacier is an alpine glacier in a cirque below Otis Peak in Rocky Mountain National Park in the U.S. state of Colorado. The glacier extends from Andrews Pass at nearly 12,000 to 11,700 feet with some perennial snow extending to Andrews Tarn, a small proglacial lake. When images of the glacier taken in the early 1900s are compared with those of the early 2000s, Andrews Glacier is showing a negative glacier mass balance which indicates the glacier is retreating.
Chaney Glacier is in Glacier National Park in the U.S. state of Montana. The glacier is situated in a cirque to the southeast of Mount Kipp on the eastern side of the Continental Divide. Chaney Glacier is one of several glaciers that have been selected for monitoring by the U.S. Geological Survey's Glacier Monitoring Research program, which is researching changes to the mass balance of glaciers in and surrounding Glacier National Park. The glacier is being monitored using remote sensing equipment and repeat photography, where images of the glacier are taken from identical locations periodically.
Agassiz Glacier is in Glacier National Park in the U.S. state of Montana. It is named after Louis Agassiz, a Swiss-American glaciologist. The glacier is situated in a cirque to the southeast of Kintla Peak west of the Continental Divide. Agassiz Glacier is one of several glaciers that have been selected for monitoring by the U.S. Geological Survey's Glacier Monitoring Research program, which is researching changes to the mass balance of glaciers in and surrounding Glacier National Park.
Boulder Glacier is located in the U.S. state of Montana in Glacier National Park (U.S.). The glacier is situated to the north of Boulder Peak and west of the Continental Divide. Between 1966 and 2005, Boulder Glacier lost more than 75 percent of its surface area. As of 2005 the glacier was measured to cover only 13 acres (0.053 km2), and no longer met the 25 acres (0.10 km2) threshold often cited as the minimal area to qualify as an active glacier.
Miche Wabun Glacier is a glacier remnant (glacieret) in the U.S. state of Montana in the northeastern region of Glacier National Park. The glacieret is situated in a cirque to the east of Goat Haunt Mountain. Miche Wabun Glacier was measured in 2010 to have retreated to less than 25 acres (0.10 km2) in area, considered to be a minimal size to qualify as being considered an active glacier. Between 1966 and 2005, the glacier lost over 55 percent of its surface area.
Red Eagle Glacier is a glacier remnant (glacieret) in Glacier National Park in the U.S. state of Montana. The glacieret is a hanging glacier located on the north slope of Clyde Peak, and to the southeast of Mount Logan and Logan Glacier. Between 1966 and 2005, Red Eagle Glacier lost 53 percent of its surface area and now covers less than 25 acres (0.10 km2) which is below the threshold to qualify as an active glacier. Comparing images of the glacier taken in 1914 with those from 2009, indicates that the glacier has experienced extensive retreat.
Harrison Glacier is a glacier located in the US state of Montana in Glacier National Park. Situated on a southeast‐facing ridge immediately south of Mount Jackson, it is the largest remaining glacier in Glacier National Park, estimated in 2005 to have an area of 466 acres (1.89 km2). Though many experts have stated that all the glaciers in Glacier National Park may disappear by the year 2030, Harrison Glacier lost only 9 percent of its surface area in the 40-year period between 1966 and 2005 and will likely still exist well beyond 2030. Compared to many of the vanishing glaciers in Glacier National Park, Harrison Glacier's accumulation zone is at a much higher altitude, which has allowed it to maintain some equilibrium in its glacier mass balance. Comparisons of images of the glacier taken in 1913 with images from 2009 indicate that the glacier has experienced thinning and retreat.
Ahern Glacier is in Glacier National Park in the U.S. state of Montana. The glacier was named after George Patrick Ahern. Ahern Glacier is situated on a ridge between Ipasha Peak to the north and Ahern Peak to the south at an elevation between 8,800 feet (2,700 m) and 8,000 feet (2,400 m) above sea level, immediately east of the Continental Divide. Meltwater from the glacier feeds Ahern Glacier Falls, a waterfall which descends an estimated 1,680 feet (510 m) in one sheer drop to a talus slope below en route to Helen Lake. Between 1966 and 2005, Ahern Glacier lost 13 percent of its surface area.
Baby Glacier is a glacier located in the U.S. state of Montana in Glacier National Park. Baby Glacier is situated in a cirque on the northeast slope of Numa Peak at an elevation between 7,200 feet (2,200 m) and 6,800 feet (2,100 m) above sea level. The glacier covers approximately 19 acres (0.077 km2) and does not meet the threshold of 25 acres (0.10 km2) often cited as being the minimum size to qualify as an active glacier. Between 1966 and 2005, Baby Glacier lost a third of its surface area.
The Carter Glaciers are in Glacier National Park in the U.S. state of Montana. The glaciers are situated along a ridge immediately to the east of the Continental Divide, mainly below an unnamed peak which rises to 9,164 feet (2,793 m). The glaciers cover an area of approximately 50 acres (0.20 km2) at an elevation between 8,500 feet (2,600 m) and 7,200 feet (2,200 m) above sea level. The Carter Glaciers consist of between three and four separate small glacial remnants (glacierets), none of which meet the threshold of 25 acres (0.10 km2) often cited as being the minimum size to qualify as an active glacier.
Harris Glacier is located in the US state of Montana in Glacier National Park. The glacier is situated in a cirque immediately to the northeast of Parke Peak at an elevation between 7,000 ft (2,100 m) and 6,600 ft (2,000 m) above sea level. The glacier covers an area of approximately 8 acres (0.032 km2) and does not meet the threshold of 25 acres (0.10 km2) often cited as being the minimum size to qualify as an active glacier. Between 1966 and 2005, the glacier lost 77 percent of its acreage.
Kintla Glacier is in Glacier National Park in the U.S. state of Montana. The glacier is situated on a plateau 2 miles (3.2 km) southwest of Kintla Peak at an elevation between 8,700 feet (2,700 m) and 7,700 feet (2,300 m) above sea level. The glacier has numerous crevasses and is actually two glaciers with a combined area of 280 acres (110 ha) as of 2005. This is a 34 percent decrease in area from 1966.
Old Sun Glacier is in Glacier National Park in the U.S. state of Montana. The glacier is situated immediately to the east and northeast of Mount Merritt at an elevation between 9,400 and 8,600 ft above sea level. The glacier was named after a sun priest of the Blackfoot called "Ntas", translated to Old Sun. Old Sun Glacier has numerous crevasses and appears to have a healthy accumulation zone. Old Sun Glacier lost 12 percent of its surface area between 1966 and 2005.
Rainbow Glacier is in Glacier National Park in the U.S. state of Montana. The glacier is situated immediately to the east of Rainbow Peak at an elevation between 8,500 feet (2,600 m) and 8,000 feet (2,400 m) above sea level. The glacier covers an area of approximately 287 acres (1.16 km2) and has visible crevasses in satellite imagery. Rainbow Glacier has shown modest retreat compared to other glaciers in Glacier National Park, and lost just over 9 percent of its surface area between 1966 and 2005.
Sexton Glacier is located in the U.S. state of Montana in Glacier National Park. The glacier is situated in a cirque north of Going-to-the-Sun Mountain and on the southeast slope of Matahpi Peak at an elevation between 8,000 feet (2,400 m) and 7,000 feet (2,100 m) above sea level. The glacier covers an area of approximately 68 acres (0.28 km2) and lost over 30 percent of its surface area between 1966 and 2005.
Two Ocean Glacier is in Glacier National Park in the U.S. state of Montana. The glacier is situated on the west side Continental Divide below Vulture Peak at an average elevation of 8,400 feet (2,600 m) above sea level. As of 2005, Two Ocean Glacier consisted of numerous ice patches covering a total of 67 acres (0.27 km2) and is more than 35 percent smaller than it was in 1966.
Vulture Glacier is in Glacier National Park, U.S. state of Montana. The glacier is situated just south of Vulture Peak at an average elevation of 8,412 feet (2,564 m) above sea level. Between 1966 and 2005, Vulture Glacier lost over 50 percent of its surface area.
White Chuck Glacier is located in the Glacier Peak Wilderness in the U.S. state of Washington and is 3.5 mi (5.6 km) south of Glacier Peak. The glacier is within Mount Baker-Snoqualmie National Forest and nearly touches the White River Glacier though they are separated by an arête off the Kololo Peaks. White Chuck Glacier has retreated significantly since the end of the Little Ice Age. From about 1850 to 1930, the glacier thinned and by 1940, a fast rate of retreat commenced. By 1955, the glacier had three separate termini and by 2005, the northern terminus was gone. Several small proglacial lakes have been left behind by the retreating glacier. Between 1958 and 2005 White Chuck Glacier lost more than half its surface area.
