The debris avalanche - Coldwater Lake
The avalanche deposit created a dam that created a new large lake on the north side of the mountain. Named Coldwater Lake, it is now nearly 200 feet deep after an outlet channel was made to prevent it from overtopping its landslide dam and creating a catastrophic release of water. A delta derived from flow from Spirit Lake is building at the east end.
Photo by James Maynard © 2009 - free use with attribution
Photo by James Maynard © 2009 - free use with attribution