The historic September 2013 storm that triggered widespread flooding across Å·ÃÀ¿Ú±¬ÊÓƵ’s Front Range eroded the equivalent of hundreds, or even as much as 1,000 years worth of accumulated sediment from the foothills west of Boulder, researchers at the University of Å·ÃÀ¿Ú±¬ÊÓƵ Boulder have discovered.