Blog Post Image: Hydrologists Find Mississippi River’s Buffering System for Nitrates is Overwhelmed

Map and probability distribution of the fraction of laterally exchanged water (F) for the Mississippi River network. Map shows the fractional amount of surface water that is likely to enter the hyporheic zone, where it can undergo filtration. Orange and red represent areas experiencing a lower fraction of water entering the hyporheic zone. Dark blue areas approach 100% likelihood water will enter the zone. Image credit: University of Texas at Austin (Click image to enlarge)