The authors investigated the relation between the width function and the regional variability of peak flows. The authors explored 34 width function descriptors (WFDs), in addition to drainage area, as potential candidates for explaining the regional peak flow variability.
Perez, G., R. Mantilla, and W.F. Krajewski, The influence of spatial variability of width functions on regional peak flow regressions. Water Resources Research, 54, 1-19. https://doi.org/10.1029/2018WR023509, 2018.