Extended Data Figure 3: Location of Lake Saint John, Louisiana, and sediment core (STJ1) used in this study.
From: Climatic control of Mississippi River flood hazard amplified by river engineering
Lake Saint John is an oxbow lake that formed via neck cut-off of the lower Mississippi River in about ad 150020 and is situated outside the modern floodway. Bathymetric contours (white) given in metres. Shaded relief shows relative topographic lows (dark shades) and highs (light shades) according to the National Elevation Dataset25.