42:. Archeological evidence suggests that the dune was breached around 900 CE. Chacoans filled the breach with masonry sometime in the early 11th century, and built an accompanying reservoir lined with stones that was visible until 1920. The dam stopped Chaco Wash from further deepening, which helped raise the water table in the canyon, aiding Chacoan farming. The absence of a
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behind the dam led geologist
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82:The Chaco Handbook: An Encyclopedic Guide
80:Vivian, R. Gwinn; Hilpert, Bruce (2012),
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119:Chaco Culture National Historical Park
139:Native American history of New Mexico
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134:Post-Archaic period in North America
109:Archaeological sites in New Mexico
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23:that lies at the western end of
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63:Vivian & Hilpert 2012
129:Ancestral Puebloans
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33:Ancestral Puebloan
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17:Dune Dam
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