Summary
Accurately predicting sediment transport is critical for infrastructure management, flood-risk assessment, river restoration, and predictions of habitat for aquatic organisms. Sediment transport predictions are often inaccurate partly because of uncertainties in estimating the onset of gravel motion. Cohesive material such as clay, microbial biofilms, and biological silks from aquatic organisms can affect the onset of gravel motion but are often neglected. A combination of laboratory experiments, river measurements, and modeling will be used to measure and predict the influence of cohesive ma