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Klickitat Glacier
Klickitat Glacier
	Klickitat Glacier Klickitat Glacier
Type	Mountain glacier
Location	Mount Adams, Yakima County, Washington, USA
Coordinates	46°11′21″N 121°27′58″W / 46.18917°N 121.46611°W
Area	2.93 km2 (1.13 sq mi) in 2006
Length	2 mi (3.2 km)
Terminus	Talus
Status	Retreating

Klickitat Glacier is located on the east slopes of Mount Adams a stratovolcano in the U.S. state of Washington. Though within the Mount Adams Wilderness, the glacier is situated within the boundaries of the Yakama Indian Reservation.^[3] The glacier descends from approximately 12,000 ft (3,700 m) to a terminus near 7,200 ft (2,200 m) below which an old lateral moraine once was the northern margin of the glacier.^[3] Klickitat Glacier has been in a general state of retreat for over 100 years and lost 46 percent of its surface area between 1904 and 2006.^[2]

Climate

Piker's Peak is on the upper boundary of Klickitat Glacier.

Climate data for Piker's Peak 46.1950 N, 121.4872 W, Elevation: 11,188 ft (3,410 m) (1991–2020 normals)
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Mean daily maximum °F (°C)	19.9 (−6.7)	19.2 (−7.1)	20.4 (−6.4)	24.2 (−4.3)	33.1 (0.6)	40.2 (4.6)	50.9 (10.5)	51.2 (10.7)	45.9 (7.7)	35.4 (1.9)	23.4 (−4.8)	18.8 (−7.3)	31.9 (−0.1)
Daily mean °F (°C)	13.9 (−10.1)	11.9 (−11.2)	12.0 (−11.1)	14.7 (−9.6)	22.4 (−5.3)	28.8 (−1.8)	37.9 (3.3)	38.3 (3.5)	33.7 (0.9)	25.5 (−3.6)	17.0 (−8.3)	13.1 (−10.5)	22.4 (−5.3)
Mean daily minimum °F (°C)	7.9 (−13.4)	4.6 (−15.2)	3.7 (−15.7)	5.2 (−14.9)	11.8 (−11.2)	17.4 (−8.1)	24.9 (−3.9)	25.3 (−3.7)	21.5 (−5.8)	15.5 (−9.2)	10.7 (−11.8)	7.3 (−13.7)	13.0 (−10.5)
Average precipitation inches (mm)	13.22 (336)	10.04 (255)	10.27 (261)	6.95 (177)	4.59 (117)	3.20 (81)	0.89 (23)	1.26 (32)	2.96 (75)	7.46 (189)	12.98 (330)	14.23 (361)	88.05 (2,237)
Source: PRISM Climate Group^[4]

References

^ "Klickitat Glacier". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2012-11-04.
^ ^a ^b Sitts, Danielle; Andrew G. Fountain; Matthew J. Hoffman (2010). "Twentieth Century Glacier Change on Mount Adams, Washington, USA" (pdf). Northwest Science. 84 (4). Northwest Scientific Association: 378–385. doi:10.3955/046.084.0407. Retrieved 2012-11-04.
^ ^a ^b Mount Adams East, WA (Map). TopoQwest (United States Geological Survey Maps). Retrieved 2012-11-04.
^ "PRISM Climate Group, Oregon State University". PRISM Climate Group, Oregon State University. Retrieved October 6, 2023. To find the table data on the PRISM website, start by clicking Coordinates (under Location); copy Latitude and Longitude figures from top of table; click Zoom to location; click Precipitation, Minimum temp, Mean temp, Maximum temp; click 30-year normals, 1991-2020; click 800m; click Interpolate grid cell values; click Retrieve Time Series button.