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Channel mapping river miles 29–62 of the Colorado River in Grand Canyon National Park, Arizona, May 2009

March 23, 2017

Bathymetric, topographic, and grain-size data were collected in May 2009 along a 33-mi reach of the Colorado River in Grand Canyon National Park, Arizona. The study reach is located from river miles 29 to 62 at the confluence of the Colorado and Little Colorado Rivers. Channel bathymetry was mapped using multibeam and singlebeam echosounders, subaerial topography was mapped using ground-based total-stations, and bed-sediment grain-size data were collected using an underwater digital microscope system. These data were combined to produce digital elevation models, spatially variable estimates of digital elevation model uncertainty, georeferenced grain-size data, and bed-sediment distribution maps. This project is a component of a larger effort to monitor the status and trends of sand storage along the Colorado River in Grand Canyon National Park. This report documents the survey methods and post-processing procedures, digital elevation model production and uncertainty assessment, and procedures for bed-sediment classification, and presents the datasets resulting from this study.

Citation Information

Publication Year 2017
Title Channel mapping river miles 29–62 of the Colorado River in Grand Canyon National Park, Arizona, May 2009
DOI 10.3133/ofr20171030
Authors Matt Kaplinski, Joseph E. Hazel, Paul E. Grams, Keith Kohl, Daniel D. Buscombe, Robert B. Tusso
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2017-1030
Index ID ofr20171030
Record Source USGS Publications Warehouse
USGS Organization Southwest Biological Science Center

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