Collier Glacier

{{Short description|Glacier in the state of Oregon}}

{{Infobox glacier

| name = Collier Glacier

| photo = Three_Sisters_Viewpoint_cropped.jpg

| photo_caption = The Collier Glacier is between North Sister (left) and Middle Sister.

| type = Mountain glacier

| location = Cascade Range, Lane County, Oregon, U.S.

| map = USA Oregon

| map_caption = Location in Oregon

| label_position = right

| map_size = 225

| coordinates = {{coord|44|09|54|N|121|47|06|W|region:US-OR|format=dms|display=inline,title}}

| coordinates_ref ={{cite gnis|id=1139993|name=Collier Glacier|accessdate=2012-07-29}}

| area =

| length = {{convert|5000|ft|abbr=on}}

| thickness =

| terminus = Barren rock

| status = Retreating

}}

Collier Glacier is in the U.S. state of Oregon. The glacier is situated in the Cascade Range at an elevation generally above {{convert|8000|ft|m}}. Collier Glacier is on the west slopes of North Sister, an extinct shield volcano.{{Cite map|publisher=TopoQwest (United States Geological Survey Maps)|title=North Sister, OR|url=http://www.topoquest.com/map.php?lat=44.16499&lon=-121.78499&datum=nad83&zoom=4|accessdate=2012-07-15}} Since its last maximum extent during the Little Ice Age (1350–1850 A.D.) the glacier has retreated over a mile.{{cite news|last=Ramsayer|first=Kate|title=Disappearing glaciers|url=http://www.bendbulletin.com/article/20071022/NEWS0107/710220392/|accessdate=July 15, 2012|newspaper=The Bulletin|location=Bend, Oregon|date=October 22, 2007}}