Long Term Monitoring of Glaciers at Mount Rainier National Park: Narrative and Standard Operating Procedures Version 1.0 by National Park Service (Paperback / softback, 2013)
Glaciers are a critical resource and feature of Mount Rainier National Park (MORA) that have undergone substantial change in the past century. Currently there is approximately 90 km2 (35 mi2) and 4.2 km3 (1.0 mi3) of ice on Mount Rainier, but since 1913 the total area of the mountain covered by glaciers has decreased 21 % and the total volume by 25% (Nylen 2002).