Estimation of hydrological parameters at ungauged catchments
Kibet Ndiema1993, Journal of Hydrology
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Abstract
. Estimation of hydrological parameters at ungauged catchments. J. Hydrol., 143: 429-454. Estimates of hydrological parameters at ungauged sites have traditionally been obtained from regression equations. This study investigates alternative methods based on the classification of catchments into groups according to their flow regime, the assignment of ungauged catchments to a group based on physical characteristics of the catchment, and the use of similarity measures to transfer parameters from gauged to ungauged catchments. The paper considers the methods that can be adopted in this type of approach and the many variations that must be considered in their implementation. The methods are examined using a set of 99 catchments from the UK and are seen to be efficacious in estimating the unit hydrograph time to peak and standard percentage runoff, as defined by the UK Flood Studies Report.
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