Streamflow Measurement Using Mean Surface Velocity

This study developed an efficient discharge measurement method that can be applied to estimate the streamflow of natural streams and artificial channels. The conventional methods apply current meters measure are costly, time-consuming, labor-intensive. Owing a shortage observers in for safety hydrologists with advances techniques, many have strongly suggested use non-contact when determining streamflow. floats or surface velocity radar determine becoming more popular especially during periods high water. However, it is not easy coefficient each vertical directly mean subsection. As relationship between stream cross-section constant, accurate could further developed. Thus, estimated by velocity, cross-sectional area stream. cross-section, used parameter calibration, usually obtained from made based on velocity-area principle area. was measured at then Once determined, velocity. approach channel. Measurements were verify reliability accuracy proposed approach. results show channel very stable both because differences, given method, relatively insignificant. result, quickly provides reliable