Various forms of the regressional relationship between the concurrent monthly discharges of neighbouring catchments are explored, with a view to generalising the relationship for a region. This enables monthly streamflow data to be transposed from a gauged catchment to an ungauged catchment, provided that certain transfer coefficients can be estimated from the physical catchment and rainfall characteristics. Most of the methods are based on a linear relationship between the concurrent monthly discharges of a pair of catchments with only one transfer coefficient. This may be estimated in a number of ways for a pair of gauged-ungauged catchments, however, errors in the individual transposed flows are high.
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Research Article| April 01 1991
Transposition of Monthly Streamflow Data to Ungauged Catchments
K.C. Gan, T. A. McMahon, I.C. O'Neill; Transposition of Monthly Streamflow Data to Ungauged Catchments. Hydrology Research 1 April 1991; 22 (2): 109–122. doi: https://doi.org/10.2166/nh.1991.0008
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