Question

For which one of the following purposes is the double mass curve used?

• A. Checking on the consistency of precipitation records.
• B. Prediction of annual precipitation
• C. Defining which periods of storm should be analyzed to obtain the maximum useul information from storm rainfall records.
• D. For estimating the capacity of a reservoir.

Answer 1

The correct option is A Checking on the consistency of precipitation records.

The double-mass curve can be used to adjust inconsistent precipitation data. The graph of the cumulative data of one variable versus the cumulative data of a related variable is a straight line so long as the relation between the variables is a fixed ratio.