The Influence of Climatic changes on Extreme Streamflows in the United States

We are exploring trends over time in the largest floods and most severe streamflow droughts in the United States in the last century. With USGS and NOAA collaborators, we are analyzing seasonal and regional trends and variability in large floods in the U.S. With collaborators on multiple continents, we are analyzing trends in severe streamflow droughts in North America, South America, Europe, and Australia, as well as looking at the relation between streamflow droughts and atmosphere/ocean variability. Finally, in collaboration with researchers from the University of Vermont and University of New Hampshire, we are looking at groundwater recharge in northern New England. This includes looking at the climatic drivers of recharge and the impacts of recharge on low summer streamflows.