William "Bill" M. Alley, Ph.D. is NGWA's science and technology director. Previous to this position, he served as chief of the Office of Groundwater at the U.S. Geological Survey for almost two decades. During his USGS career, Alley was a hydrologist in the Colorado District's Surface Water Branch, Systems Analysis Group. He also served as the groundwater coordinator in the National Water Quality Assessment Program and coordinator of the Regional Aquifer System Analysis Program. Alley earned a bachelor's degree in geological engineering from the Colorado School of Mines, a master's degree in hydrogeology from Stanford University, and a doctorate in geography and environmental engineering from Johns Hopkins University.