Olympic National Park is known for numerous awesome natural wonders. From moss-covered rainforests in old-growth forests to cascading waterfalls plunging into rough, salmon stocked rivers, we have it all out here. When we want a hike along the ocean to look at sea-stacks, the Olympic National Park has us covered. Neah Bay to Ocean Shores and from Olympia to Port Angeles, the Olympic Peninsula is full of awesome sights that inspire millions each year. Sadly, one of the sights that have been consistent for thousands of years is slowly leaving the region, and it might be too late to stop it from vanishing for good.

Bill Baccus, the physical scientist for Olympic National Park, has been studying the Olympic National Park glaciers in detail, and his findings are not good news for the future of glaciers in the region. The glaciers of Olympic are said to be currently losing a meter of ice a year, meaning that the glaciers could be gone from Olympic National Park as early as 2050. Glaciers in the park are currently providing important levels of water for the numerous watersheds in the rainforests, and the loss of the glaciers could have a devastating impact on all aspects of the environment.

In 2009, before Bill arrived, Olympic National Park did a glacier study, examining surface area as well as elevations of larger glaciers to calculate the volume of ice loss and impacts on the park’s glacial-fed rivers. Their findings, taken directly from the Olympic National Park website, are what is written below. We are sharing this in case it is deleted by the current administration. 

The glaciers of the Olympic Mountains and the neighboring Cascades helped sculpt the wild, beautiful landscape that attracts millions of visitors to Olympic, North Cascades and Mount Rainier National Parks. They comprise the most glaciated area of the United States outside of Alaska. Their meltwater combines with annual snowpack to feed rivers, forests and lowland communities en route to the sea, and nurture cold-water-loving fish like salmon and bull trout. The yawning crevasses challenge climbers who use ropes, crampons and ice axes to ascend the high peaks. They have had a powerful role in the past but also offer insights into our future.

In 1982, the park had 266 glaciers; in 2009 there were 184. Comparison photographs clearly show glaciers in retreat. By comparing aerial photos from the late 1970s to 2009, researchers detected a 34% loss of glacier surface area in only 30 years. The terminus (bottom end) of the Blue Glacier retreated about 325 feet (100 m) in the 20 years from 1995-2006. On Mount Anderson, a rugged peak in the southeastern part of the park, its south-facing Anderson Glacier receded to less than 10% of its former size between 1927 and 2009!

But length is only a small part of the story; the glaciers are also getting thinner. Researchers found the volume of ice decreased by at least 15% in the 22 years from 1987-2009. For example, surface measurements revealed Blue Glacier terminus lost 178 feet (55 m) of thickness between 1987 and 2009. Even the snowier upper glacier lost 32-48 feet (10-15 m).

These critical and beautiful rivers of ice have shaped and adorned the Olympic Mountains for millennia, but have rapidly shrunk in just decades, stark evidence of the ongoing impact of human-driven climate change. Their ice is an essential resource for creatures from tiny ice worms found only on glacial ice, to steelhead and salmon returning up snow and ice-fed rivers, and even to humans living downstream or climbing to the icy heights. The data and photographs are clear. What’s unclear is if humans will to make the changes necessary to help these icons of the Pacific Northwest summits persist. 

Links for more Information via Olympic National Park

See links below for how you can help or to learn more about glacier and climate change studies. – This site integrates federal research on climate and global change. – Site for the National Snow and Ice Data Center. – National Park Service Climate Change Response Program page. See /athome for ideas on things to do at home to reduce your carbon footprint. – Glaciers of the American West site, a project at Portland State University with funding from the National Science Foundation, NASA, the US Geological Survey, and the National Park Service.


Hoh Glacier Comparison
Hoh Glacier Comparison

Blue Glacier Comparison
Blue Glacier Comparison

Anderson Glacier Comparison
Anderson Glacier Comparison
Comparison photographs illustrate that the Lillian Glacier disappeared completely between 1905 and 2010.


In 1982, the Olympic National Park had 266 Glaciers. In 2012, we had 311. Don’t get too excited though. The number of glaciers increased as larger glaciers broke up and became smaller ones.

In 1982, the Olympic National Park had 8 Classic Valley Glaciers, in 2012, the park had 4. Classic Valley Glaciers are glaciers that cover an entire valley of a mountain.

Ferry Glacier is the first glacier in the Olympic National Park to vanish. Anderson Glacier is now reported to have also vanished.

65% of the Glaciers in Olympic National Park feed the Hoh Watershed and help maintain the Hoh rainforest

Blue Glacier, which is the largest glacier in Olympic National Park, lost 18 percent of its size since 1982. The Blue Glacier, a 2.6-mile long glacier that descends from 7,980-foot Mount Olympus, the highest peak in the Olympic Mountains. Blue Glacier is one of the park’s largest; one researcher calculated it would be equivalent to 20 trillion ice cubes!

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