Yes, I used to work as an archaeologist in the southwest. Canal irrigation in the Santa Cruz watershed is found from the late archaic period (<2000 BCE), as a w

Yes, I used to work as an archaeologist in the southwest. Canal irrigation in the Santa Cruz watershed is found from the late archaic period (<2000 BCE), as a well-established example. Those networks remained mainly small regional networks until the Hohokam classic period, when they built massive canal networks irrigating tens of thousands of acres and sometimes draining entire rivers dry. Many of these later canals remain still in use today (in greatly modified states), like Phoenix's Grand Canal.