Abstract
AbstractInsufficient unregulated streamflow observation is a practical challenge and limits the effective utilization and management of water resources. In this paper, the recently introduced univariate map-correlation method to select reference stream gauges and estimate daily streamflows at ungauged catchments was evaluated. The concept was further developed into a multivariate map-correlation using ordinary cokriging. The characteristics of the hydrological response correlations among 27 unregulated catchments were used as the primary sources of information for the analyses. In addition, the lack of information about the hydrological response correlations between catchments was supplemented by extracting correlation information from topographic and climatic covariables. The study was applied to investigate regional hydrological response patterns and select reference stream gauges for ungauged catchments. The analyses revealed that distinct regional hydrological response patterns exist in the case study...
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