Samples from Catastrophic 2000 Flood (IMAGE) University of Washington Caption During a 2011 field trip, a regional assistant gathers samples from a deposit left by a catastrophic flood on the Yarlang-Tsangpo River in 2000. Credit Karl Lang/UW Usage Restrictions Credit required License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.