In this overview of Arizona’s irrigated agriculture and its water supply, the focus will be on what is grown, where, with what water; how the water is managed by the state and by irrigators; water efficiency strategies; and economic impacts. The presentation will touch on current irrigation water supply issues concerning growers, their communities, and other water users.
Brown Bag Seminar - Hidden Water: The Fresh Water Pozos of the Gran Desierto
Dr. Ben Wilder, Director, Desert Laboratory on Tumamoc Hill
The Gran Desierto region of the Sonoran Desert is the largest extent of sand dunes in North America. An array of freshwater springs, or pozos, punctuate the salt flats where the dunes meet the sea. Unresolved in origin, and essential to countless species, their waters rise up inextricably out of the dunes. This transdisciplinary collaboration between a botanist, hydrologist, and artist seeks to document the origin of the pozo's water, determine how long it has resided below the dunes, and show how the pozo's and the riparian vegetation they support has changed through time. Likewise, the project, a part of the Next Generation Sonoran Desert Researchers 6&6 art-science collaboration (nextgensd6and6.com) will document this wide range of dependent themes as part of the 6&6 art show at the UAMA opening in January 2019. From the traditional salt pilgrimage of the Tohono O'odham people, to nesting raptors, generations of cottonwood trees, and the future of water in the binational Sonoran Desert desert; these springs are central to the larger story of how humanity interacts with water in the arid west.
Photo: Ben Johnson