Introduction to Water Resources
Water resources refer to all forms of water available on Earth, both on the surface and underground. They are crucial for various uses including drinking, irrigation, and sustaining ecosystems. The types of water resources include rivers, lakes, glaciers, groundwater, and oceans—which, while abundant, require treatment for direct use. This section sets the stage for deeper exploration into sources of water, uses, management, challenges, and conservation efforts across different regions, particularly focusing on India.