Class 10 Geography Chapter 3 Water Resources Worksheet

Freshwater is renewed through the hydrological cycle, yet many regions experience water shortages. Growing populations increase the demand for domestic water and food production. Intensive irrigation, industrial activity and urban expansion put additional pressure on freshwater supplies. In some areas, groundwater is extracted faster than it can be replenished. Water pollution from domestic and industrial waste can also make available water unsafe for human use.

Dams store river water and can support irrigation, hydroelectricity generation, domestic and industrial water supply, flood control and other activities. However, regulating river flow can affect sediment movement and aquatic habitats. Reservoirs may submerge forests and agricultural land, while the construction of large dams can displace people and disrupt established livelihoods. These concerns have led to debates about the environmental and social costs of large river projects.

In traditional houses in arid and semi-arid Rajasthan, sloping rooftops were connected through pipes to underground tankas. Rainwater was directed into the storage tanks and kept for use during dry periods. The first spell of rain was generally not collected because it helped clean the roofs and pipes. Similar harvesting practices have been adapted in different parts of India to collect rainwater, reduce dependence on external supplies and support groundwater recharge.

Different regions of India developed water-management techniques suited to their local environment. In the Western Himalayas, diversion channels known as guls or kuls were used for irrigation. Rajasthan developed systems such as khadins, johads and underground tankas. In Meghalaya, bamboo pipes were used to direct spring and stream water towards plants. These systems demonstrate how local communities adapted water use to rainfall, terrain and agricultural requirements.

Rivers flow across administrative boundaries, and their water may be required by several states for farming, drinking water, industries and electricity generation. A project that diverts water in an upstream region may affect the quantity available downstream. Differences in demand, river flow and development priorities can therefore lead to disputes between states. Cooperation, careful planning and efficient use of available water are important for managing shared river resources.