Agriculture in the prehistoric Southwest
After the Hohokam disappeared, Spanish explorers of the 16th century noted the use of canal irrigation in only two areas of the Southwest: eastern Sonora, primarily practiced by the Opata and Lower Pima, and among the Pueblos of northern New Mexico. Irrigation by the Opata and Pueblos had different objectives. In Sonora, with a long growing season, two crops of maize a year were grown in river valleys. The spring crop during the dry season was dependent upon irrigation; the summer and fall crop during the rainy season utilized irrigation to supplement rainfall. The necessity of irrigation probably required a high level of social organization. In New Mexico, with only one crop of maize per year possible, irrigation was supplemental and the lesser dependence on irrigation implies less social organization than in Sonora.
Ottoman Cyprus
The authorities also encouraged the construction and improvement of artificial channels for water supply and irrigation, which greatly increased crop yield and allowed large-scale fruit production. Among villages described as prosperous due to artificial irrigation upon the British takeover of the island are Morphou, Lapithos, Polis, Lefka, Avdimou and Kolossi. Samuel Baker, who visited Cyprus in 1879, noted "mills turned by water" and "narrow lanes streaming with water" in Lefka. He also wrote that "every garden and farm was irrigated by water conducted from the mountains in artificial channels" in the northern slopes of the Kyrenia Mountains extending to the Karpas Peninsula. In Karavas, streams were diverted into artificial channels to supply water to the village.