Table 2.

Input dataset file descriptions.

Folder Name: Input Data
ID	Subfolder/File Name	File Type	Content Description	Provenance
1	MRB_floodplain	GIS raster*	Riverine floodplain extents within the Mississippi River Basin (MRB), clipped from the GFPLAIN250m floodplain dataset • 250-m grid, GeoTIFF format • Albers Equal Area Conic projected coordinate	Nardi et al.27.
2	MRB_floodplain_LU	GIS raster*	Input land use dataset for change detection • Clipped for the MRB floodplain extent • Modified to have seven generic land use classes • One corresponding dataset for each of the years from 1941 to 2000	Sohl et al.28,29; Supplementary Table 2
3	Reference_LU	GIS raster*	Reference land use dataset used for validation purposes (see items #10 and 11 in Table 3) • Clipped for the MRB floodplain extent • Modified to have same land use classes as in item #2 • One corresponding dataset for each of the years from 1992 to 2000	European Space Agency58; Supplementary Table 3
4	Reference_floodplain	GIS raster	Riverine floodplain extents within the MRB, clipped from the European Commission Joint Research Centre Global Flood Maps (GFM) • 1000-m grid, GeoTIFF format	Dottori et al.56

Note: All GIS raster and shapefile datasets are in the Albers Equal Area Conic projected coordinate system. *The raster datasets are in GeoTIFF format at 250-m spatial resolution (except item # 4).