Lec 20 Hohokam

Lec 20 Hohokam - Monday, Nov. 9 To Do List Turn in Article...

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Monday, Nov. 9 To Do List • Turn in Article Write- Up 3 • Case Study: – Hohokam Irrigation
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Salt and Gila Rivers in AD 1200
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Hohokam Subregions • Phoenix Basin Core – Salt and Gila R. • Tucson Basin – (Santa Cruz River) • Middle Gila River • San Pedro • Papagueria • Tonto Basin YOU ARE SITTING ON TOP OF A HOHOKAM VILLAGE CALLED LA PLAZA
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Sonoran Desert Environment – High temperatures – Little Rainfall, bi-seasonal pattern – Few sources of permanent water, but rivers have broad floodplains – ideal for irrigation • The Sonoran Advantage – Diversity of topography – Great diversity of economic plants – High diversity => lots of options for subsistence
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Subsistence • Wild Plants Abundant – Mesquite – Agave – Cholla – Prickly Pear – Saguaro • Cultivated Plants – Corn, beans, squash – Cotton • Fauna – Rabbits, Deer, Fish – Poor for large game
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• Corn was domesticated in central Mexico from teosinte (ca. 6700 BC – new date from summer 2009) • Spread to Southwestern US by 2100 BC • Earliest irrigation 1000 to 2000 BC near Tucson • Earliest irrigation in Phoenix Basin by AD 50, large systems by AD 450-600
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Hohokam Irrigation • Largest Prehispanic irrigation system in North America • Phoenix Area – 500 main canals, 1000s of miles of laterals – Irrigate 25,000 acres- -39 square miles – First settlers reused Hohokam canals
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Canals
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Salt River Flood 1993
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ASU View of Tempe area
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Salt River in AD 1200
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Risks of Irrigation Agriculture Very large labor investment Headgates set to a specific
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This note was uploaded on 10/22/2010 for the course ASB 326 taught by Professor Falconer during the Fall '08 term at ASU.

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Lec 20 Hohokam - Monday, Nov. 9 To Do List Turn in Article...

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