In this article, we show that a log‐linear relationship between α(e) and θ(e) can be used to simplify the problem of predicting α(e) and θ(e) from the physical characteristics of the catchment and rainfall. In particular, we show that α(e) can be predicted from peak floods observed in the smallest gauged subcatchment in the basin and its log‐linear relationship with θ(e) can be used to predict peak flood at any location in the basin. We demonstrate this using observed peak floods from the Iowa River basin in the Upper Midwest part of United States.

Ayalew, T.B., W.F. Krajewski, R. Mantilla, and D.L. Zimmerman, Can floods at large river basin be predicted from floods observed at small subbasins? Journal of Flood Risk Management, 1-8, DOI: 10.1111/jfr3.12327, 2017.