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Fig. 3. Plots showing the probability of membership in hydric-soil and highly erodible land (HEL) groupings, as dependent on minimum (or maximum) wetness index (W, defined by Eq. [2]) or erosion index (E, defined by Eq. [3]) values, for the West Nishnabotna and South Fork watersheds. For example, in the plots on the left, the thick curve plots the proportion of cells with greater W values that are mapped as hydric soils, and the thin curve shows the proportion of cells with smaller W values that are mapped as non-hydric soils. Cumulative distributions are shown by the curve marked by open circles to aid interpretation.
