Coldwater Lake is a barrier lake on the border of Cowlitz County and Skamania County , Washington in the United States . The lake was created during the 1980 eruption of Mount St. Helens , which blocked its natural outlet , Coldwater Creek , with volcanic debris . It is one of several lakes in the area that were created or otherwise enlarged by the eruption
1980 eruption of Mount St. Helens
1980 eruption of Mount St. Helens
Coldwater Lake (Washington)