Topographic change detection at select archeological sites in Grand Canyon National Park, Arizona, 2007-2010

A study of topographic changes at select archaeological sites in Grand Canyon National Park, Arizona, between 2007 and 2010 reveals significant erosion and deposition, primarily driven by overland flow gullying and aeolian sand transport. Using terrestrial lidar techniques, researchers detected vertical changes as large as 50 cm and documented the erosion of over 100 m³ of sediment at one site. The findings indicate a predominant trend of erosion across all monitored sites, highlighting the rapid and dynamic nature of topographic change in this environment. This research provides critical data for managing archaeological resources and understanding the potential impacts of sediment-depleted flows from Glen Canyon Dam on site stability.

Collins, B. D., Corbett, S. C., Fairley, H. C., Minasian, D. L., Kayen, R., Dealy, T. P., & Bedford, D. R. (2012). Topographic change detection at select archeological sites in Grand Canyon National Park, Arizona, 2007-2010. Scientific Investigations Report. https://doi.org/10.3133/sir20125133