Seven western states, including Oregon, have lost more than one-third of their glacial cover since 1950 and more than 300 glaciers in those states have disappeared entirely as the earth has rapidly warmed, a first-of-its-kind inventory and analysis confirms. Researchers at Portland State University and the U.S. Geological Survey built their findings on an earlier analysis that looked at the lost area and volume among 612 federally recognized glaciers in California, Colorado, Idaho, Montana, Oregon, Washington and Wyoming since 1950. … The total glacier area in the West has shrunk by 35%, and volume has shrunk by 33%. The lost volume, if averaged across all remaining glaciers, would be equivalent to each of them dropping by 38 feet. … Snowpack in the Northwest and in the Cascade Range, which acts as a reservoir during the summer months when there’s little rain and many communities rely on snowmelt, is sitting at some of the lowest levels since record-keeping began in 1985.