Jeffrey Nittrouer, Rice University (image) Rice University Caption This is a photo of Rice University researcher Jeffrey Nittrouer on an exposed dune field in the Bonnet Carré spillway in Louisiana in July 2011. Nittrouer and colleagues found that about 40 percent of the sand being carried down the Mississippi River was diverted through the spillway during a flood diversion that year. Credit J. Nittrouer/Rice University Usage Restrictions For news reporting purposes only. 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.