The data contained within this resource were produced for the following paper:
1.	Castejon-Villalobos, J., A. Lee, N. Patterson, B. Lane, and C.B. Phillips (2025). Leveraging High-resolution Topography to Advance Parsimonious Reach-scale Flood Inundation Mapping (submitted to Water Resources Research). This paper contains considerable information on how these data were collected and processed.

This resource includes 3 zip folders, 1 per study reach (Leggett, Miranda, Scotia). For each site, the following folders are included:
1_Input_shapefiles: Includes 3 files in .shp format. 
	Boundary.shp - Projected Coordinate System: NAD_1983_UTM_Zone_10N. Polygon that depicts the boundaries of the study reach for both TUFLOW and HAND-FIM analysis.
	Thalweg.shp - Projected Coordinate System: NAD_1983_UTM_Zone_10N. This is the channel centerline following the lowest points along the reach. 
	XSections.shp - Projected Coordinate System: NAD_1983_UTM_Zone_10N.Perpendicular transects to the centerline. Transect spacing for Leggett and Miranda is 10m, and 15m for Scotia.

2_Tuflow: This folder contains the following subfolders:
	Tuflow_input_parameters: Excel file containing the input parameters for Tuflow simulations. 
		n: Calibrated Manning's n for the study reach in s/m^(1/3).
		Slope: slopes computed from ordinary least squares linear regression in m/m.
		Elevation: Elevation of the lowest point in the most downstream cross section, in meters.
		bf_wse: Bankfull water surface elevation in the most downstream cross section, in meters.
		cell_size: computation cell size in meters.
		reach_len: Length of the reach in meters.
	Tuflow_results: It contains the following subfolders: 
		depth: This subfolder contains 11 raster datasets per site corresponding to 11 simulated discharges. Simulated discharges began at 5% bankfull (Q1) and then increased in 		10% increments from 10 % to the bankfull flow (Q2 to Q11). The actual values of discharge in m3/s can be obtained from subfolder 4_Ensemble_Rating_Curves.
			Projected Coordinate System: NAD_1983_UTM_Zone_10N			
			A typical raster file has the following nomenclature: SFE_Leggett_002_d_010_00.flt
			SFE: South Fork Eel
			Leggett: site name (Leggett for the example)
			002: Discharge #2 (10% bankfull)
			d: depth raster (pixel values in meters)
			010_00: This value is the same for all rasters. Tuflow simulations are recorded at 10 different time steps, and the 10th timestep is when the simulation is stable.
			.flt: float format
		wse: This subfolder contains 11 raster datasets per site corresponding to 11 simulated discharges. Simulated discharges began at 5% bankfull (Q1) and then increased in 10% 		increments from 10 % to the bankfull flow (Q2 to Q11). The actual values of discharge in m3/s can be obtained from subfolder 4_Ensemble_Rating_Curves.
			Projected Coordinate System: NAD_1983_UTM_Zone_10N
			A typical raster file has the following nomenclature: SFE_Leggett_002_h_010_00.flt
			SFE: South Fork Eel
			Leggett: site name (Leggett for the example)
			002: Discharge #2 (10% bankfull)
			h: water surface elevations raster (pixel values in meters)
			010_00: This value is the same for all rasters. Tuflow simulations are recorded at 10 different time steps, and the 10th timestep is when the simulation is stable.
			.flt: float format
		
3_Benchmark_Hydraulic_Geometry: This folder contains 11 excel files per site corresponding to 11 simulated discharges. Simulated discharges began at 5% bankfull (Q1) and then increased in 10% increments from 10 % to the bankfull flow (Q2 to Q11). The actual values of discharge in m3/s can be obtained from subfolder 4_Ensemble_Rating_Curves.
	A typical excel file has the following nomenclature: HG_001.xlsx
	HG: Hydraulic geometry data
	001: Discharge #1 (5% bankfull)
	.xlsx: excel format
	Within the excel file HG data is provided in the following columns: 
		Line_ID - Cross Section Number from upstream to downstream
		A - Cross sectional area m2 
		P - Wetted Perimeter in meters
		R - Hydraulic Radius in meters
		W - Top Width in meters
		avg_d - Average depth in meters
		max_d - Maximum depth in meters

4_Ensemble_Rating_Curves: This folder contains 1 single excel file indicating the study site within its name. The excel file has the following columns:
	h - maximum depth in the cross section, in meters
	h_per - maximum depth percentile within each discharge (Q column)
	Q - Discharge in m3/s
	Q_num - Discharge number. 001 corresponds to discharge #1 (5% bankfull)

5_HAND_rasters: This folder contains 2 Height Above Nearest Drainage rasters, corresponding to 1-m and 10-m spatial resolution.
	Projected Coordinate System: NAD_1983_UTM_Zone_10N
	HAND_1m.tif: 1-m spatial resolution
	HAND_10m.tif: 10-m spatial resolution 

6_HAND_SRCs: This folder contains 2 excel files.
	HAND_1m_SRCs.xlsx: HAND Synthetic Rating Curve parameters estimated from the 1-m resolution HAND raster.
	HAND_10m_SRCs.xlsx: HAND Synthetic Rating Curve parameters estimated from the 10-m resolution HAND raster.
	Each excel file contains the following columns:
		Stage: HAND stage in meters
		Flow_Area: Inundated area along the reach in m2. Number of inundated pixels times the pixel size.
		Wetted_Bed_Area: Wetted bed area as a function of the Flow_Area and the slope of the inundated pixels in the original DEM. This value is in m2.
		XS_area: reach-averaged cross sectional area in m2.
		Perimeter: reach-averaged Wetted perimeter in meters. 
		Hydraulic Radius: reach-averaged hydraulic radius in meters. 
		Width: reach_averaged top channel width in meters. 
		Q: discharge estimated using Manning's equation in m3/s.

7_FIM_Agreement_Summary: This folder contains 1 excel file with a summary of the results from the benchmark-HAND FIM comparison and the calculation of the FIM agreement metric. The HAND-FIM was computed using the 1-m resolution HAND raster. The excel file contains 101 columns:
	Column 1 (Q_cms): Discharge in m3/s
	Columns 2 to 51 (2-100): they indicate the HAND stage percentile for a given discharge. For instance, column 20 indicates the HAND stage value corresponding to the 20th percentile.
	Columns 52 to 101 (A2-A100): they indicate the agreement between the benchmark model for a given discharge and the HAND stage for its corresponding HAND stage percentile. For 	instance, column A20 indicates the value of agreement obtained if HAND adopts the stage corresponding to the 20th percentile.
	
8_FIM_Bias_Summary: This folder contains 1 excel file with a summary of the results from the benchmark-HAND FIM comparison and the calculation of the FIM Bias metric. The HAND-FIM was computed using the 1-m resolution HAND raster. The excel file contains 101 columns:
	Column 1 (Q_cms): Discharge in m3/s
	Columns 2 to 51 (2-100): they indicate the HAND stage percentile for a given discharge. For instance, column 20 indicates the HAND stage value corresponding to the 20th percentile.
	Columns 52 to 101 (A2-A100): they indicate the FIM Bias value between the benchmark model for a given discharge and the HAND stage for its corresponding HAND stage percentile. For 	instance, column A20 indicates the value of FIM Bias obtained if HAND adopts the stage corresponding to the 20th percentile.