International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage



(79) Mass diagram, Mass curve, Flow integrated curve, or Summation curve
A diagram, curve, or graph, plotted with rectangular coordinates, representing a summation (integration) of all preceding quantities up to a point. Each ordinate being equal to the sum of preceding terms in the series, with the corresponding abscissa representing elapsed time, etc. The diagram is used extensively in storage and regulation studies pertaining to stream flow.

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