APPLICATION OF DISCHARGE MONITORING SYSTEM WITH H-ADCP DURING 8 YEARS AND ITS VALIDATION

Abstract

We have recently developed a new monitoring system using H-ADCP measurements and river flow simulation based on a DIEX method. This system has been applied to continuous discharge monitoring in the middle reach of the Edo River over 8 years. This study presents the fundamental validity and applicability of this system. The results indicate that this system can completely evaluate river discharge without the conditions of unexpected accident for H-ADCP and low water elevation in which H-ADCP can not measure river velocities. The comparison of the calculated and observed discharges shows that the averaged relative error of the calculated discharge is 4.8 %. These facts suggest the high accuracy and robustness of this system for automatic continuous monitoring of river discharge.