Gem Glacier is the smallest named glacier in Glacier National Park (U.S.). Located on the east side of the Continental Divide arête known as the Garden Wall, the glacier is situated on the cliff face above the better known Grinnell Glacier. Gem Glacier is a hanging glacier, and drapes down from the north face of the steep arete to which it is attached. Gem Glacier is only 5 acres (0.020 km2) in area and is far below the 25 acres (0.10 km2) threshold often cited as qualifying as an active glacier. Between 1966 and 2005, Gem Glacier lost 30 percent of its acreage and Grinnell Glacier lost 40 percent.
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.
Grant Glacier is located in the US state of Montana in Flathead National Forest. The glacier is situated in a cirque and lies below the east slopes of Mount Grant. Grant Glacier is 1 mile (1.6 km) southeast of Stanton Glacier and both 5 miles (8.0 km) west of Glacier National Park (U.S.). Images taken of the glacier in 1902 and from the same vantage point in 1998 indicate that the glacier retreated substantially during the 20th Century.
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.
Shepard Glacier is a glacier remnant (glacieret) In Glacier National Park in the U.S. state of Montana. The glacieret is immediately southeast of Cathedral Peak. Shepard Glacier was one of a number of glaciers that have been documented by the United States Geological Service (USGS) to have retreated significantly in Glacier National Park. Shepard Glacier was measured in 2009 to have decreased to less than 25 acres (0.10 km2), considered to be a minimal size to qualify as being considered an active glacier. Between 1966 and 2005, Shepard Glacier lost 56 percent of its surface area.
The Matthes Glaciers are a group of glaciers east of the Glacier Divide in the Sierra Nevada, in the U.S. state of California. The glaciers were named for François E. Matthes. There are approximately 10 small glacierets situated above 12,200 feet (3,700 m) in the John Muir Wilderness of Sierra National Forest which comprise the Matthes Glaciers.
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.
Mount Logan is located in the Lewis Range, Glacier National Park in the U.S. state of Montana. Logan Glacier is immediately north of Mount Logan and Red Eagle Glacier lies to the east. Mount Logan is situated along the Continental Divide.
Logan Glacier is in Glacier National Park in the U.S. state of Montana. The glacier is situated in a cirque to the northeast of Mount Logan. Just east of the Continental Divide, Logan Glacier is northwest of Red Eagle Glacier. Estimated in 2005 to cover an area of 75 acres (0.30 km2), Logan Glacier covered almost 125 acres (0.51 km2) in 1966, a reduction in area of 40 percent in about 40 years. 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.
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.
Dixon Glacier is located in the U.S. state of Montana in Glacier National Park. The glacier is situated in a cirque immediately to the north of The Sentinel at an elevation between 8,500 feet (2,600 m) and 7,400 feet (2,300 m) above sea level. Immediately east of the Continental Divide, the glacier is 1 mi (1.6 km) east of Thunderbird Glacier. Dixon Glacier covers an area of approximately 59 acres (0.24 km2) and between 1966 and 2005 lost over 45 percent of its surface area.
Herbst Glacier is located in the US state of Montana in Glacier National Park. The glacier is northeast of Mount Custer and lies above Lake Nooney at an elevation between 7,000 ft (2,100 m) and 8,000 ft (2,400 m) above sea level. Immediately east of the Continental Divide, the glacier covers an area of approximately 13 acres (5.3 ha) and does not meet the threshold of 25 acres (10 ha) often cited as being the minimum size to qualify as an active glacier. Between 1966 and 2005, the glacier lost almost 70 percent of its acreage.
Lupfer Glacier is in Glacier National Park in the U.S. state of Montana. The glacier is situated immediately to the east of Mount Phillips at an elevation between 6,500 ft (2,000 m) and 6,000 ft (1,800 m) above sea level. Lupfer Glacier covers an area of approximately 16 acres (0.065 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 Lupfer Glacier lost over 50 percent of its surface area.
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.
Piegan Glacier is in Glacier National Park in the U.S. state of Montana. The glacier is situated in a cirque on the southeast slope of Piegan Mountain and just below the summit at an elevation between 8,800 and 8,200 ft above sea level. The glacier covered an area of approximately 62 acres (0.25 km2) in 2005, a 10 percent reduction in its surface area since 1966. Comparing images of the glacier taken in 1930 with those from 1998, indicates that the glacier experienced relatively little change during that period.
Pumpelly Glacier is in Glacier National Park in the U.S. state of Montana. The glacier is situated immediately northeast of Blackfoot Mountain at an elevation between 8,500 and 8,000 ft above sea level. Pumpelly Glacier is just west of the Continental Divide and adjacent to Pumpkin Glacier, the two glaciers separated by crevasses. The glacier was named after Raphael Pumpelly who had first sighted the glacier in 1883. Pumpelly and Pumpkin Glaciers cover 310 acres (1.3 km2) as of 2005, a 15 percent reduction in area since 1966.
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.
Siyeh Glacier is in Glacier National Park in the U.S. state of Montana. The glacier lies in a deep cirque to the north of Mount Siyeh at an elevation between 7,200 feet (2,200 m) and 6,800 feet (2,100 m) above sea level. Siyeh Glacier covers an area of less than 10 acres (0.040 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. Siyeh Glacier has experienced massive retreat, losing over 73 percent of its surface area between 1966 and 2005.
