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RT @USGS_Pubs: Automated remote cameras for monitoring alluvial sandbars on the Colorado River in Grand Canyon, Arizona https://t.co/nvSIil…
RT @USGS_Pubs: Automated remote cameras for monitoring alluvial sandbars on the Colorado River in Grand Canyon, Arizona https://t.co/nvSIil…
RT @USGS_Pubs: Automated remote cameras for monitoring alluvial sandbars on the Colorado River in Grand Canyon, Arizona https://t.co/nvSIil…
Automated remote cameras for monitoring alluvial sandbars on the Colorado River in Grand Canyon, Arizona https://t.co/nvSIilN5uX https://t.co/pT2a8hVgo7