[contentcards url=”https://billingsgazette.com/news/state-and-regional/montana/yellowstone-lake-water-levels-detect-stream-hydrology-physical-properties-of-magma/article_fb8c7b90-a34c-11ed-ad88-5f464ae4a8d5.html”] Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week’s contribution is from Scott K. Johnson,…