2005 Volume 11 Pages 243-248
Recently, discharge observation method of high accuracy has been developed in river. In this paper, the accuracy of discharge observation method using H-ADCP (Horizontal type of Acoustic Doppler Current Profiler) auto scanning system was verified in tidal zone of Tsurumi River. Discharge observation by towing ADCP is also carried out to compare between two measuring techniques. As the result, it has been confirmed that H-ADCP method is practicable though the problem that discharge is not corresponding to ADCP method remains at falling tide period in usual flow condition. Moreover, it was clarified that the H-ADCP method was able to be measured by enough accuracy for the flood of 300-400m3/sec.
