Question

List any three impacts of siltation of waterways.

Answer 1

1. The depth of the water bodies decreases: Siltation leads to the accumulation of sediment, which reduces the depth of water bodies such as rivers, lakes, and reservoirs. This can hinder navigation, affect recreational activities, and reduce reservoirs' storage capacity.
2. Effects the aquatic life: Siltation affects aquatic life by smothering habitats critical for fish spawning and aquatic vegetation growth. It reduces water clarity and quality, which can disrupt the food chain, decrease oxygen levels, and harm fish and other aquatic organisms.
3. Chances of flood: Siltation can contribute to increased flood risks. The accumulation of sediment can reduce the capacity of waterways to carry water during heavy rainfall or snowmelt, leading to higher water levels and potential flooding in downstream areas. This can also affect nearby communities and infrastructure built along waterways.