TY - RPRT TI - A multidecade analysis of fluvial geomorphic evolution of the Spirit Lake blockage, Mount St. Helens, Washington AU - Jon J. Major AU - Gordon E. Grant AU - Kristin Sweeney AU - Adam R. Mosbrucker PY - 2020 DO - 10.3133/sir20205027 UR - https://pubs.usgs.gov/publication/sir20205027 ID - sir20205027 ER -