Why drainage basins and catchment areas need to be managed?

Drainage basins and catchment areas need to be managed to ensure sustainable water resource use, prevent flooding, and protect water quality. Effective management helps maintain biodiversity, supports agriculture, and mitigates the impacts of climate change by managing runoff and erosion. Additionally, proper management protects ecosystems and human communities from the adverse effects of pollution and habitat degradation. Overall, it promotes a balance between human needs and environmental health.