The Delta-X JPL and UNC ADCP teams returned to the Mississippi Delta on Monday, 20 September to retrieve water level gauges. They plan to stay until Sunday, 26 September. The Boston University Water Quality team has been collecting data over the past week and plans to return on Friday, 24 September. Water Quality team members on an airboat operating a Portable SpectroRadiometer (PSR) that measures above-water surface reflectance, an in-situ field measurement analogous to the imagery that AVIRIS-NG produces.