Table 3.

Output dataset file descriptions.

Folder Name: Output Data
ID	Subfolder/File Name	File Type	Content Description	Output Figure/Table
5	ChangeMap	GIS raster*	A map showing the changes in MRB floodplain land use between 1941 and 2000; “change” is defined as the non-uniqueness of individual land use grid-cells • Grid value 1 indicates “no change” and 2 indicates “change”	Fig. 1a
6	ClassTransitionMaps	GIS raster*; shapefile	A map showing major land use class-transitions in MRB floodplains between 1941 and 2000 • Five irreversible transitions (e.g., wetland → agriculture) that would negatively impact floodplain ecohydrology and resilience Also includes boundary polygons for six objectively chosen domains to facilitate focused assessments	Fig. 1b
7	ClassTransition_ LatLong	MS Excel	Total area (km2) for each of the five irreversible transitions mentioned in item #6 • Separate calculations along the latitudinal and longitudinal directions at every 250-m spacing	Fig. 1c
8	ClassTransitionMatrix	MS Excel	Inter-class transitions (km2) across all seven generic land use classes between 1941 and 2000; based on the schematic presented in Table 1	Supplementary Table 1; Fig. 1d; Fig. 4
9	Timeseries	MS Excel	Timeseries of total area (km2) for each of the seven generic land use classes • 60-year timeseries with corresponding values for every year from 1941 to 2000 • Seven datasets: the entire MRB floodplains and the six domains mentioned in item #6	Fig. 2; Supplementary Fig. 1
10	ValidationMaps	MS Excel; GIS Shapefile	Measures of fit comparing the input and reference floodplain extents (Table 2 ‒ items #1 and 4 respectively) across the MRB • An Excel file showing 8-digit Hydrologic Unit Codes (HUC) and corresponding TP and CSI values • HUC-8 boundary polygon shapefile	Fig. 5b,c
		GIS raster*	Validation maps showing the spatial consistency between input and reference land use datasets (Table 2 ‒ items #2 and 3 respectively) • 12 validation domains • Maps correspond to different years between 1992 and 2000 • File nomenclature: x_y_z; x = USGS (input) or Remotely sensed (reference) land use, y = US state where the validation domain is located; z = year	Fig. 6; Supplementary Figs. 2–4
11	ValidationResults	MS Excel	Total area (km2) for different land use classes at each of the 12 validation domains, calculated separately from the two contrasting land use datasets (item #10) • Includes calculation of correlations (R2) between two land use datasets

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 Table 2 item# 4).