Channel mapping Glen Canyon Dam to Lees Ferry in Glen Canyon National Recreation Area, Arizona - Data

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 multibeam 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...

Tags: 1-m resolution, Arizona, Colorado River, DEM, Geography, All tags... Geomorphology, Glen Canyon Dam, Glen Canyon National Recreation AreaGrand Canyon National Park, Grand Canyon National Park, Hydrology, Information Sciences, Lees Ferry, Remote Sensing, USGS Science Data Catalog (SDC), aerial photography, bathymetric and topographic data, bathymetric map, bathymetric survey data, bathymetry, bed substrate distribution, bed-substrate map, benchmarks, boat-based bathymetric sonar surveys, cartography, channel bathymetry, channel bed substrate, digital elevation models, digital photogrammetry, digital surface model dataset, elevation, elevation map, elevation uncertainty, environment, field inventory and monitoring, field monitoring stations, fuzzy inference system, geodesy, geodetic control network points, geoscientificInformation, geospatial datasets, gravel deposits, ground-based total station surveys, inlandWaters, land surveying, multibeam sonar, point density, remote sensing, river channel, river reaches, riverbank topography, roughness, sand deposits, sandbars, single-beam echo sounder, slope, spatial accuracy, subaerial topography, topographic maps, uncertainty, water-surface elevations, Fewer tags

Western United States Ruggedness Raw Values

"Vector Ruggedness Measure (VRM) measures terrain ruggedness as the variation in three-dimensional orientation of grid cells within a neighborhood. Vector analysis is used to calculate the dispersion of vectors normal (orthogonal) to grid cells within the specified neighborhood. This method effectively captures variability in slope and aspect into a single measure. Ruggedness values in the output raster can range from 0 (no terrain variation) to 1 (complete terrain variation). Typical values for natural terrains range between 0 and about 0.4. VRM was adapted from a method first proposed by Hobson (1972). VRM appears to decouple terrain ruggedness from slope better than current ruggedness indices, such as TRI or...

Tags: Climatology, Remote Sensing, Roughness, Ruggedness, Terrain, All tags... USGS Science Data Catalog (SDC), United States, Western North America, Western United States, environment, Fewer tags

Western US Ruggedness Reclassified into 6 Classes

"Vector Ruggedness Measure (VRM) measures terrain ruggedness as the variation in three-dimensional orientation of grid cells within a neighborhood. Vector analysis is used to calculate the dispersion of vectors normal (orthogonal) to grid cells within the specified neighborhood. This method effectively captures variability in slope and aspect into a single measure. Ruggedness values in the output raster can range from 0 (no terrain variation) to 1 (complete terrain variation). Typical values for natural terrains range between 0 and about 0.4. VRM was adapted from a method first proposed by Hobson (1972). VRM appears to decouple terrain ruggedness from slope better than current ruggedness indices, such as TRI or...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: ExplorationTool, Geomorphology, Roughness, Ruggedness, Terrain, All tags... USGS Science Data Catalog (SDC), United States, Western North America, Western United States, environment, Fewer tags