Irrigation (original) (raw)
Related papers
2021
Water Sowing and Harvesting (WS&H) consists of a series of ancestral procedures by which humans collect and infiltrate (sow) rainwater and runoff underground, so as to recover (harvest) it downgradient at some later time. This management of the water has made it possible for various regions of IberoAmerica —that is, Latin America plus the Iberian Peninsula— to overcome dramatic cultural and climatic changes over the centuries. The principles governing WS&H coincide with those pursued under the present paradigm of Integrated Water Resource Management. Moreover, WS&H implies a better use of water and enhanced conservation of the environment and patrimony, as well as recognition of rural communities as vital custodians of the land and of its relevant cultural aspects. The main WS&H systems that serve Ibero-American countries are described here, emphasizing the principles underlying this means of water management as exemplary of hydro-geo-ethical systems.
Prehispanic Arid Zone Farming: Hybrid Flood and Irrigation Systems along the North Coast of Peru
Agronomy, 2024
As arid lands expand across the globe, scholars increasingly turn to the archaeological record for examples of sustainable farming in extreme environments. The arid north coast of Peru was the setting of early and intensive irrigation-based farming; it is also periodically impacted by sudden, heavy rainfall related to the El Niño Southern Oscillation (ENSO) phenomenon. While the sociopolitical effects, technologies, and engineering expertise of these irrigation systems have been thoroughly examined and theorized, little is known about how farmers managed periods of water stress. The aim of this study is to test whether arid zone farming was supported by hybrid, intermittent flood and perennial water source systems in the prehispanic past. An arroyo in the Chicama Valley was selected for preliminary data collection, and these data are presented here: (1) drone photography of the arroyo capturing the aftermath of a recent (2023) rain event; and (2) potassium (K) soil test kit results from samples collected near suspected prehispanic check dam features in the same area. The paper combines these data with comparative examples from the literature to suggest that the prehispanic features functioned as water-harvesting infrastructure. The paper concludes that sustainable, arid zone farming can be supported by hybrid, intermittent flood and perennial water source systems.
Watering the Fields of Teotihuacan: Early Irrigation at the Ancient City.
Ancient Mesoamerica 2: 119–129., 1991
Recent excavations in Tlailotlacan, the “Oaxaca barrio,” near the western periphery of the ancient city of Teotihuacan, revealed remains of irrigation features associated with the early history of the city. Small floodwater irrigation canals were found underneath a residential structure that had been occupied by Zapotec immigrants from Oaxaca. Radiocarbon dating, corroborated by ceramic evidence, places the earliest architecture in the Early Tlamimilolpa phase (ca. a.d. 200–300), thus providing a concrete terminal date for the hydraulic system, an advantage not enjoyed by previous canal explorations in the region. The hydraulic features consist of segments of two superimposed canal networks that, based on associated pottery, date to the Terminal Formative period (Tzacualli and Miccoatli phases), which represents the earliest well-documented date for the use of irrigation at Teotihuacan. Shortly after the canals were abandoned, control over this land passed from the original inhabitants to Zapotec immigrants. We suggest that this change in ownership and land use directly involved the Teotihuacan state and was part of a policy of maintaining control over the location of economically important “resources,” including foreign immigrants like the Zapotec, who had important trade connections.