Water harvesting is one of the most effective measures to combat drought because it helps conserve, store and efficiently use rainwater during periods of water scarcity. Drought occurs when rainfall is insufficient for a prolonged period, resulting in declining groundwater levels, drying of rivers and ponds, crop failure and shortage of drinking water. Water harvesting reduces these impacts by collecting and storing rainwater when it is available for use during dry periods. Rainwater harvesting is the most common form of water harvesting. It involves collecting rainwater from rooftops, open areas and other surfaces and directing it into storage tanks, ponds, reservoirs or groundwater recharge structures. In rural areas, traditional structures such as johads, tanks, check dams, khadins and village ponds can store rainwater and make it available for agriculture, livestock and domestic purposes. In urban areas, rooftop rainwater harvesting can provide an additional source of water and reduce dependence