Fig. 5

Consistency between GFPLAIN250m (input) and GFM (reference) floodplain extents. (a) Yellow areas show the intersection between the two datasets27,56. (b,c) Map of the Critical Success Index (CSI) and True Positive Rate (TP rate) for each Hydrologic Unit watershed where the two contrasting floodplain datasets are intersected. CSI = A/(A + B + C), TP rate = A/(A + C); here A, B, and C – the yellow, green, and blue areas in map (a), respectively, indicate the matches, areas covered by the GFPLAIN250m only, and areas covered by the GFM only.