/home/cms_data/dfault/photos/stories/id/2/6/3326/s_ERRORCourtesy of Drake Olsen.Drake Olsen said the Bertha Lake flooded and blew through its terminal morraine during last week's rains. What was once a small creek surrounded by trees is now filled with debris from hillsides of the drainage. Olsen said he could fly his plane below the cliffs near the lake mouth.