Calculate Channel Flow (Q) for Any Channel

Cross section area of channel flow (A)

Hydraulic radius of channel (R = A/WP)

Slope of energy grade line, rise/run, (S)

Manning's Roughness Coefficient (n)

Result

Discharge, Q

cms

A - Cross section area of channel flow
R = A/WP - Hydraulic radius of channel
S - Slope of energy grade line, rise/run
n - Manning's Roughness Coefficient
Q - Discharge