After holding water for centuries, Iceberg Lake
in the Wrangell-St. Elias Mountains drained in
1999 and has lost its water every year since
except 2001.
Photo by Mike Loso.
This column is provided as a public service by the Geophysical Institute, University of Alaska Fairbanks, in cooperation with the UAF research community. Ned Rozell is a science writer at the institute.
Not too long ago, a lake sprung a leak in the high country of the Wrangell-St. Elias Mountains. The lake drained away, as glacier-dammed lakes often do, but this lake was a bit different, and seems to be telling a story about a warmer Alaska.
The lake, known as Iceberg Lake to people in McCarthy, about 50 airmails to the north, had been part of the landscape for as long as people could remember. Pinched by glacial ice, the three-mile-long, one-mile-wide lake on the northern boundary of the Bagley Icefield was remote but notable enough that it was the cover photo for a recent book about hiking Wrangell-St. Elias National Park.
When McCarthy guide Richard Villa visited the area with a client in the summer of 1999, he was stunned to see the lake, which had lost much of its water. Villa later told Mike Loso, a Kennicott resident part of the year and now a professor at Alaska Pacific University in Anchorage.
Loso flew to the lake the next summer with Bob Anderson and Dan Doak, scientists who also reside in McCarthy for part of the year. The men saw a muddy lakebed where Iceberg Lake had sat for so long.