PPT Slide
Q = D V W implies all are functions of Q
Typically, at any cross section, relation modeled as a power function:
V = a Qb where a and b are constant coefficients
W = c Qd where c and d are constant coefficients
D = e Qf where e and f are constant coefficients
a Qb * c Qd * e Qf = a*c*e *Q b+d+f = Q
and therefore the coeffs are
Hydraulic Geometry Relations for a cross-section {Station Geometry}