ISO 748:1997, Measurement of liquid flow in open channels - Velocity-area methods

This International Standard specifies methods for determining the velocity and cross-sectional area of water flowing in open channels without ice cover, and for computing the discharge therefrom.It covers methods of employing current-meters and floats to measure the velocities. Although, in most cases, these measurements are intended to determine the stage-discharge relation of a gauging station, this International Standard deals only with single measurements of the discharge: the continuous recording of discharges over a period of time is covered in ISO 1100-1 and ISO 1100-2.