Application of the Cowell Index to monthly streamflow analysis
Temporal patterns of streamflows are important in the fluctuating physical and biological environment of rivers. Colwell proposed two measures of predictability: constancy, and contingency. The measures are based on the mathematics of information theory. The Colwell Index, predictability, is the sum of the two measures. A consistent method of calculating the Colwell Index for monthly streamflows data was developed and is 1) use monthly discharge time steps, 2) uses 12 discharge classes with the 12th class being all monthly discharges larger than the 11th class boundary, 3) use the equation B(i) ...
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