Interactive comment on “Estimating Sand Bedload in Rivers by Tracking Dunes: a comparison of methods based on bed elevation time-series” by

In "Estimating Sand Bedload in Rivers by Tracking Dunes: a comparison of methods based on bed elevation time-series", the authors present a systematic comparison for different approaches for estimating bedload transport based on dune migration. The methods compared rely on repeat multibeam echo sounding surveys from a reach of the Colorado River during two different field campaigns that exhibit different discharges. The multibeam surveys provide the base data, and three different subsets from the data are selected. The three datasets used in the comparison are, 1) longitudinal transects of bed elevation from the full multibeam surveys, which provide spatial data series, 2)