USGS Scientists Maciej Obryk sits in ice at the HJ Andrews Experimental Forest in Blue River, Oregon.

Maciej Obryk is a Research Hydrologist at the Cascades Volcano Observatory. He manages the large-scale experimental debris flow flume facility, and his primary research is on the initiation and rapid movement of icy/rocky debris flows at volcanoes. Maciej’s work is critical to understanding volcanic hazards like landslides, debris flows and lahars (volcanic mudflows).