ABSTRACT:

This HydroShare resource contains all necessary input data and analysis outputs for the HAND-FIM (Height Above Nearest Drainage – Flood Inundation Mapping) assessment conducted at three reaches along the South Fork Eel River: Leggett, Miranda, and Scotia. The resource supports flood inundation mapping efforts and includes:

- Input Shapefiles: Boundaries defining the analysis area, reach centerlines, and perpendicular transects.
- TUFLOW Model Data: Input files and output rasters for water surface elevation and depth.
- Hydraulic Geometry: Extracted data for transects across a range of discharges.
- Rating Curve Ensembles: Depth vs. discharge data used to generate ensemble rating curves.
- HAND Rasters: Produced at 1-meter and 10-meter spatial resolutions.
- Synthetic Rating Curves: Derived from HAND methodology.
- FIM Agreement Summary: Comparison between HAND-FIM and benchmark inundation extents.
- FIM Bias Summary: Patterns of under and over prediction between HAND-FIM and benchmark inundation extents.
This resource supports ongoing research in scalable flood inundation mapping.

Utah Water Research Laboratory, Utah State University
Paired paper:
Castejon-Villalobos J., Lee, A., Patterson, N., Lane, B., & Phillips, C.B (2025). Leveraging High-resolution Topography to Advance Parsimonious Reach-scale Flood Inundation Mapping, submitted to Water Resources Research.