The study looked at how sediment builds up in the Yellow River and the lower Wei River. By analyzing factors like elevation and slope, researchers found a way to predict how sediment deposits in the rivers. They developed a method that considers both elevation changes and water conditions, leading to more accurate predictions than previous methods. The results suggest that lowering the elevation at Tongguan can reduce sediment buildup in the rivers. The study also showed that changes in water and sediment conditions have influenced the rivers' erosion since 2003.