Abstract
Monitoring of water level variations is essential for water resource management. Currently, the application of the Synthetic Aperture Radar (SAR) altimetry technology allows to improve the accuracy as well as the ability to monitor the water level variations of smaller rivers and lakes. The content of this paper is to evaluate the possibility of monitoring water level variations in the Mekong River basin using data Jason-3 and Sentinel-3A. The results show that in comparison with the time-series of water level variations from the In-Situ hydrological data, the accuracy of the time-series of water level variations from satellite altimeter data can be achieved from 0.15 m to 0.20 m under favourable conditions, however, the measurement performance in slope mountainous areas is still limited in dry season and the cycles with no valid data are sometimes in long periods of time.
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