Summarize the factors affecting water infiltration and river bank erosion, and explain the link to flooding risk.

This work concluded that vegetated soil exhibits the fastest water infiltration, followed by bare soil, with wet soil showing the slowest rate due to saturation. The river's low velocity is influenced by its gentle slope and obstructions, but its banks are eroding due to sparse vegetation and human activity. Human impacts, such as constructing houses and roads, compact the soil, significantly reducing infiltration and increasing surface runoff. Pollution from dumping also contributes to this by blocking soil pores. These human activities collectively lead to a heightened risk of flooding by decreasing the land's ability to absorb water.