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Arizona bajada canals
Prehistoric Bajada "hanging" canals of southeastern Arizona were constructed after c. 1250 and remained in use until c. 1450.
The presence of irrigation and domestic water supply canals in the bajada of the Pinaleño Mountains of Safford Basin expands the knowledge of prehistoric water management and agricultural intensification in the American Southwest. In contrast to the lowland riverine floodplain canals, such as those of the Hohokam culture in the Phoenix Basin, an extensive network of canal systems exists in the undulating piedmont landscape of southeastern Arizona. These canal systems are seen as an adaptive technology to mitigate the arid topography and climate, and greatly expand the settlement and agricultural potential of the area.
== Scope and extent ==
This apparently unique series of late classic prehistoric mountain stream fed water management structures have been recently rediscovered in the Safford Basin of Arizona's upper Gila Valley.〔〔 At least 28 hanging canal systems or fragments have been identified to date. The longest canals are about 9.5 kilometers (ca. 6 miles) and the total length of all systems is currently estimated to exceed 80 kilometers (ca. 50 miles) While a few of these canals may date as early as c. 800, the vast majority appear to have originated after c. 1250 and persisted until c. 1450.〔
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