Existing methods for the estimation of drainage density are generally inadequate, being either laborious or expensive or of low effectiveness. Methods are examined by which grid square drainage density may be estimated from topological variables, a sample of 400 grid squares from Devon, England, being used in the study. Principal components analysis of these data yields interpretable components that allow prediction of 82% of the total variation in stream length, employing a multiple relationship. A simple regression relationship affords prediction of 68% of the variation in stream length. The mode of sampling employed and the use of polynomial regression do not markedly change the effectiveness of these relationships, and sufficient published work exists to suggest that the method may be widely applicable.
Water Resources Research – Wiley
Published: Aug 1, 1979
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