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Service Description: Bathymetric, topographic, and grain-size data were collected from May 2013 to October 2016 along a 15-mi reach of the Colorado River in Glen Canyon National Recreation Area, Arizona by the U.S. Geological Survey Grand Canyon Monitoring and Research Center. The study reach is located from river miles -15 at the base of Glen Canyon Dam to 0 at Lees Ferry. Channel bathymetry was mapped using multi-beam bathymetry collected in November 2014 and single beam bathymetry collected in February 2015, August 2015, February 2016, and June 2016. Subaerial topography was mapped using photogrammetry derived from aerial Imagery collected in May 2013 and ground-based total-stations collected in February 2015, October 2015, and October 2016. Bed-sediment grain-size data were collected in November 2014 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.

Map Name: Glen Canyon Bathymetry Map Service

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• Channel Map Glen Canyon 2014 (1m DEM) (0)
• Channel Map Glen Canyon 2014 Bed Class (1)
• Channel Map Glen Canyon 2014 Data Sources (2)
• Channel Map Glen Canyon 2014 Point Density (3)
• Channel Map Glen Canyon 2014 Uncertainty (4)
• Channel Map Glen Canyon 2014 (1m HSD) (5)

Description:

Copyright Text: U.S. Geological Survey, Grand Canyon Monitoring and Research Center

Spatial Reference: 102988  (6404)


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Spatial Reference: 102988  (6404)

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Spatial Reference: 102988  (6404)

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Document Info:

Title: Map1
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Keywords: Aerial Photography,Arizona,Bathymetry,Channel Mapping,Colorado River,Digital Elevation Model,Digital Surface Model,DSM,elevation,ellipsoid heights,GCMRC,Glen Canyon,Glen Canyon National Recreation Area,Hillshade,Topography,USGS
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