Author(s)

A.F.J. Reungoat & W.T. Sloan

Abstract

Hydrological models are increasingly being used in large-scale river basin management. These models invariably require some element of calibration using hydrological data. This causes problems when applying models to river basins where no hydrological data exists (ungauged), a task that hydrologists are increasingly being called upon to undertake. The only practical approach to resolving this is regionalisation. Currently available regionalisation methods yield poor estimates of model parameters. The main problem is that their application relies on identifying groups of basins that are fairly similar in every part of their hydrological regime. Such groups (regions) tend to be very small. Consequently, the regional relationships, derived to infer model parameters for ungauged river basins from those calibrated for gauged river basins in the same regio

Keywords