National Geographic : 1940 Nov
© National Geographic Society Painting by W. Langdon Kihn Diligent Hohokams Built Irrigation Canals for Their Parched Soil Long Before theComing ofthe Spaniards In the desert country along the Gila and Salt Rivers in Arizona, these predecessors of the Pima Indians livedcomfortably inprehistoric times only because they learned to irrigate. Archeologists have found ruins of one large city nine miles from the Salt River, which received itswater supply through acanal 7feet deep, 4 feet wide at the bottom, and 30 feet wide at the top. The entire canal system is believed to have watered about 200,000 acres. Recently some ofthe old canals have been cleared and restored to use.