From the National Hispanic Cultural Center website.
A presentation on the role of acequia systems (irrigation ditches) on the Iberian Peninsula, in the Americas and in the Philippines. Over centuries and across continents, irrigation systems have been central to advanced civilization. Many of the characteristics and many of the rituals associated with these irrigation systems find similarities across time and space. In New Mexico more than anywhere else in the U.S., acequias have remained a part of both economic and cultural life of its inhabitants. At a time when sustainable agriculture and life styles are being promoted it is instructive to learn what has come before. Dr. Rivera has studied acequias on several continents and published important works in several languages on the subject.
More Rio Grande basin coverage here.