Fig. 10.
The graph presents debris volume behaviour along the flume. Retention shows 0.1 at 0 meter, increases to about 0.47 at 20 meter, then decreases to about 0.03 at 60 meter, slightly increases to about 0.04 at 100 meter, decreases to about 0.01 at 120 meter, and increases to about 0.32 at 170 meter. Discharge past each barrier shows about 0.9 at 0 meter, decreases to about 0.42 at 20 meter, then gradually decreases to about 0.39 at 60 meter, 0.35 at 100 meter, and 0.33 at 120 meter. Cumulative retention shows about 0.1 at 0 meter, increases to about 0.58 at 20 meter, then gradually increases to about 0.61 at 60 meter, 0.65 at 100 meter, 0.67 at 120 meter, and reaches about 1.0 at 170 meter.Normalised volume of debris retained and discharged at different barrier locations along the 190 m flume. Inset 3D point cloud from LiDAR scan of debris retained at the first barrier FB1 with annotated labels