Chezy Coefficient

Chezy coefficient, abbreviated as C, a dimensionless number, dependent on surface roughness and the hydraulic mean depth.

 

Chezy coefficient formulas

\(\large{ C = \frac{1}{n} \; r_h^{1/6}   }\)

\(\large{ C = \frac{v_m}{ \sqrt{ \; r_h \; m }   }   }\)

Where:

Units	English	Metric
\(\large{ C }\) = Chezy coefficient	\(\large{ dimensionless }\)
\(\large{ r_h }\) = hydraulic radius	\(\large{ ft }\)	\(\large{ m }\)
\(\large{ v_m }\) = mean velocity	\(\large{ \frac{ft}{sec} }\)	\(\large{ \frac{m}{s} }\)
\(\large{ n }\) = roughness coefficient	\(\large{ dimensionless }\)
\(\large{ m }\) = slope	\(\large{ ft }\)	\(\large{ m }\)