UNO experimental dataset for: Multiscale bedform reorganization at the onset of substantial suspended sediment transport

We collected data from three experiments that tracked bedform evolution in a 22-m-long, 0.56-m-wide, and 0.9-m-deep flume at the University of New Orleans' Dynamics of Sedimentation laboratory. Each experiment was run at equilibrium conditions under steady, uniform, normal flow in a fully closed system recirculating flume. All three experiments were run at 20cm mean flow depth, the same bed material sediment, but with varied discharge: 20cm 30Hz experiment at 45 L/s, 20cm 35Hz experiment at 51 L/s, 20cm 40Hz experiment at 56 L/s. We measured topography using a 3D laser scanning system along an approximately 5.5-m-long test section, with scans repeated approximately every 165 seconds. We analyzed bed topography for the 2D centerline profile at 1 mm horizontal resolution.