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</ratingCurve> <ratingCurve ratingCurveId="TheBigRiver"> <location> <locationId>X1123</locationId> </location> <ratingCurveType>LevelToFlow</ratingCurveType> <reversible>true</reversible> <ratingCurveTable> <ratingCurveTableRecord flow="0.100" level="0.054"/> <ratingCurveTableRecord flow="0.500" level="0.155"/> <ratingCurveTableRecord flow="1.000" level="0.244"/> <ratingCurveTableRecord flow="1.479" level="0.317"/> </ratingCurveTable> </ratingCurve> |
Rating Curve Equation
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A rating curve equation can be defined per section of the rating curve using the lowerLevel and UpperLevel tags. The equation can be in the form of a power equation or a parabola. The form of the equation:
Power equation
Parabola
Here is an example:
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<ratingCurve ratingCurveId="Test location">
<location>
<locationId>234206</locationId>
</location>
<ratingCurveType>LevelToFlow</ratingCurveType>
<reversible>true</reversible>
<ratingCurveEquation>
<lowerLevel>0</lowerLevel>
<upperLevel>0.391</upperLevel>
<equation>Power</equation>
<a>11.9001</a>
<b>0</b>
<c>1.55067</c>
</ratingCurveEquation>
<ratingCurveEquation>
<lowerLevel>0.391</lowerLevel>
<upperLevel>0.807</upperLevel>
<equation>Power</equation>
<a>16.6258</a>
<b>-0.1</b>
<c>1.8564</c>
</ratingCurveEquation>
</ratingCurve>
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