The evolution of the Neptune Pass plume and the Quarantine Bay Delta between 2018 (pre-expansion) to near the present day (August 20, 2023).

The discharge at Belle Chasse, Louisiana (USGS Gauge 070374525) is noted in the lower left corner of each image. The images were selected to show both the temporal evolution and a diversity of river stages. The May 7, 2020 image relates to a discharge of 31,587 m³ s^-1, which is near the maximum allowable flow in the lower Mississippi River (35,400 m³ s^-1), and the July 21, 2022 and August 20, 2023 near historic low flow values. Image Source: Copernicus Sentinel-2 Data; Discharge data source: waterdata.usgs.gov.