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IMAGE: Blue boxes indicate change in high flow frequency during each season. High-flow seasons are not decreasing in any region in the U.S. and Canada.
Red boxes indicate where low-flow events. view more
Credit: Figure courtesy of Evan Dethier.
HANOVER, N.H. - January 7, 2021 - The number of extreme streamflow events observed in river systems have increased significantly across the United States and Canada over the last century, according to a study from Dartmouth College.
In regions where water runoff from snowmelt is a main contributor to river streamflow, the study found a rise in extreme events, such as flooding.