Question

How does sedimentation affect bodies of water?
short paragraph

Answer 1

Sedimentation—the settling of soil, organic matter and particles into rivers, lakes and reservoirs—reduces water clarity and light penetration, which can suppress aquatic plant growth and disrupt photosynthesis. It smothers fish spawning beds and benthic habitats, lowers dissolved oxygen as organic-rich sediments decompose, and can transport contaminants that accumulate in the food web. Over time sediment buildup fills channels and reservoirs, reducing storage and navigation capacity and increasing flood risk, while altering stream flow and degrading overall aquatic biodiversity and water quality.