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Comment: FEWS-34143 Q0 in discharge to stage equation

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$$discharge = cr*(stage-alpha)^{beta} + Q0$$


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$$stage = ({{discharge - Q0} \over cr})^{1/beta} + alpha$$

where ‘cr’ cr and ‘beta’ beta are rating curve constants,  ‘alpha’   alpha is a constant which represents the stage corresponding to zero discharge and Q0 is an optional shifting constant.  If not configured, Q0 with be defaulted to 0.

For stage values lower than the minStage of the first equation or higher than the maxStage of the last equation, the discharge will not be calculated. Note that if alpha is set to a value higher than the minStage of the first equation and beta is not an integer, it will act as a minimum value.

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