should we have tank variety in modern world?

Modern irrigation systems use reservoirs, tanks, and wells to supply water for crops. This water was used for drinking, washing, and irrigation.

Ancient Rome built structures called aqueducts to carry water from snowmelt in the Alps to cities and towns in the valleys below. As better techniques developed, societies in Egypt and China built irrigation canals, dams, dikes, and water storage facilities. The earliest form of irrigation probably involved people carrying buckets of water from wells or rivers to pour on their crops. In fact, civilization would probably not be possible without some form of irrigation. Ancient civilizations in many parts of the world practiced irrigation. By allowing farmers to grow crops on a consistent schedule, irrigation also creates more reliable food supplies. In areas that have irregular precipitation, irrigation improves crop growth and quality. Places that have sparse or seasonal rainfall could not sustain agriculture without irrigation. To irrigate is to water crops by bringing in water from pipes, canals, sprinklers, or other man-made means, rather than relying on rainfall alone.

Should we have tank variety in modern world?