A minor reservoir is a small water storage system used for various purposes such as irrigation, firefighting, and drinking water. There are various synonyms for the word minor reservoir, and some of them include small reservoir, secondary reservoir, supplementary reservoir, auxiliary reservoir, and backup reservoir. These synonyms describe a water storage system that is not the primary source of water but acts as an additional resource. Agricultural needs, as well as industrial supply chains, often require small, additional reservoirs to conserve water and to ensure a consistent supply. The synonym used might depend on the context in which the minor reservoir is being described.