Yellow River Floods (image) Washington University in St. Louis Caption Map showing historically identified courses of the Yellow River and its historic mega-deltas. The 1938 course evolved after the dykes were destroyed to (unsuccessfully) prevent Japanese forces from advancing across the Central Plains. Credit Courtesy of the Journal of Archaeological and Anthropological Sciences Usage Restrictions News usage with credit to the Journal of Archaeological and Anthropological Sciences. 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.