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<math>Q=\frac{2}{3}C_{d}\cdot L\sqrt{2g}\cdot H^{\frac{3}{2}}</math>
<math>Q=\frac{2}{3}C_{d}\cdot L\sqrt{2g}\cdot H^{\frac{3}{2}}</math>
{{Plainlist|1=Where:
{{Plainlist|1=Where:
*''C<sub>d</sub>''= discharge coefficient (default 0.62 for a 'sharp edge).
*''C<sub>d</sub>'' = discharge coefficient (default 0.62 for a 'sharp edge).
*''L'' = Length of the weir (m)
*''L'' = Length of the weir (m)
*''g'' = Acceleration due to gravity (9.81 m/s<sup>2</sup>)
*''g'' = Acceleration due to gravity (9.81 m/s<sup>2</sup>)
*''H'' = Height of water over the weir (m)}}
*''H'' = Height of water over the weir (m)}}