Abstract

Significant progress has been made in the past years to improve the quality of streamflow data and to assess the potential of hydroacoustics. However, little effort has been made in monitoring techniques for under-ice streamflow. This paper presents a case study in which the under-ice index velocity method is used for monitoring ice-affected streamflow with an acoustic Doppler velocity meter (ADVM). The method is particularly interesting since it is reliable during periods of backwater effects, and it is fully automated and objective. In this particular case study, a reliable rating was obtained in five years, with only two discharge measurements per year.

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