Evelyn Roeloffs Nick M. Beeler James E. Quick David R. Sherrod William E. Scott Peter H. Stauffer Larry G. Mastin 2008 During the ongoing eruption at Mount St. Helens, Washington, lava has extruded continuously at a rate that decreased from ~7-9 m³ /s in October 2004 to 1-2 m³ /s by December 2005. The volume loss in the magma reservoir estimated from the geodetic data, 1.6-2.7×10 ⁷ m3 , is only a few tens of percent of the 7.5×10 7 m³ volume that had erupted by the end of 2005. application/pdf 10.3133/pp175022 en U.S. Geological Survey Constraints on the size, overpressure, and volatile content of the Mount St. Helens magma system from geodetic and dome-growth measurements during the 2004-2006+ eruption reports