Paul E Grams

Acoustic backscatter - Data and Python Code

These data were compiled for investigating the relationship between acoustic backscattering by riverbeds composed of various riverbed substrates (bed sediment), and for developing and testing a probabilistic model for substrate classification based on high-frequency multibeam acoustic backscatter. The model is described in Buscombe et al. (2017). The data consist of various quantities on coincident grids, from various sites along the Colorado River in Grand Canyon, including water depth, bed roughness, the area (or footprint) of the acoustic beam, unfiltered and filtered backscatter magnitude, sediment classification (for each location, 1 of 5 sediment classes in a categorical scheme), and the probabilities for...

Categories: Data; Tags: Arizona, Colorado River, Geography, Geomorphology, Glen Canyon, All tags... Grand Canyon, Information Sciences, Marble Canyon, Remote Sensing, Southwestern United States, USGS Science Data Catalog (SDC), United States, acoustic remote sensing, ecogeomorphology, fluvial geomorphology, fluvial sediment transport, multibeam backscatter, probabilistic modeling, seafloor mapping, stochastic modeling, submerged aquatic vegetation, substrate mapping, Fewer tags

Geomorphology and Campsite Data, Colorado River, Marble and Grand Canyon, Arizona

This ESRI geodatabase consists of 5 feature datsets with 23 individual polygon feature classes and two raster datasets. A master campsite polygon feature class represents the boundaries of campsites identified in the 1973, 1984, and 1991 campsite inventories of the Colorado River corridor in Grand Canyon, Arizona. The other polygon feature classes represent camp locations along the Colorado River corridor in Grand Canyon, Arizona during different survey periods using different surveying techniques. The raster datasets represent sub-aerial and sub-surface sandbar surfaces at 37 long term-monitoring sites between Lees Ferry and Diamond Creek, Arizona in Grand Canyon National Park, measured in September and October...

Types: Citation; Tags: Arizona, Colorado River, Diamond Creek, GIS, Grand Canyon, All tags... Grand Canyon National Park, Lees Ferry, Little Colorado River, Marble Canyon, Paria River, USGS Science Data Catalog (SDC), bathymetry, campsite, campsite area, campsite boundary, campsite inventory, campsite monitoring, campsite polygons, campsite survey, geographic information systems, geomorphology, land surveying, open sand area, raster data, recreation, sand deposits, sandbars, sonar, topography, vector data, Fewer tags

Hydrodynamic model of the Colorado River, Glen Canyon Dam to Lees Ferry in Glen Canyon National Recreation Area, Arizona: tables of model results and accuracy assessment

These data were compiled to provide a resource for other researchers interested in water-surface elevations and flow velocity across a wide range of discharge in the study reach for the project. Objective(s) of our study were to construct a two-dimensional hydrodynamic model for the 15.8 mile tailwater reach of the Colorado River in Glen Canyon between Glen Canyon Dam and Lees Ferry, Arizona. These data represent the results of the two-dimensional modeling effort with each data table (50) including the results of each run of the model. Additionally, other data represent a comparison of modeled water surface elevations to measured water surface elevations for historic Bureau of Reclamation cross sections in the study...

Tags: Arizona, Coconino County, Colorado River, Geography, Glen Canyon, All tags... Glen Canyon Dam, Glen Canyon National Recreation Area, Hydrology, Information Sciences, Lees Ferry, USGS Science Data Catalog (SDC), USGS:6595800dd34e3265ab152e47, Water Resources, accuracy assessment, bathymetry, bathymetry measurement, bed shear stress, data release, digital elevation models, elevation, flow velocity, geomorphology, geoscientificInformation, hydraulic characteristics, hydrodynamics, hydrographic datasets, inlandWaters, mathematical modeling, shoreline extents, stream discharge, streamflow, tailwater reach, topography, two-dimensional hydrodynamic model, velocities, water depths, water surface elevation, Fewer tags

Digital Elevation Models (DEM) Data

These topographic/bathymetric digital elevation models (DEMs) were collected and compiled to characterize erosion and deposition in the Colorado River and in an adjacent zone of laterally recirculating flow (eddy) during both average flow conditions and during a controlled flood that occurred in March 2008. The objectives of the study were to measure changes sandbar morphology that occurred during changes in discharge associated with the controlled flood. These data were collected between February 6 and March 31, 2008 in a 1-mile study reach on the Colorado River within Grand Canyon National Park beginning 44.5 miles downstream from Lees Ferry, Arizona. These data were collected by the USGS Grand Canyon Monitoring...

Tags: Arizona, Colorado River, Eminence Break, Eminence Break field site, Glen Canyon Dam, All tags... Glen Canyon Dam Adaptive Management Program, Grand Canyon National Park, Lees Ferry, Marble Canyon, Reson Seabat 8124 sonar with TSS MAHRSS reference system, USGS Grand Canyon Monitoring and Research Center, Willie Taylor field site, bathymetry, bathymetry measurement, channel morphology, controlled flooding, deposition, digital elevation models, eddies, erosion, field experiments, freshwater ecosystems, high-flow experiment, hydrology, inlandWaters, lateral flow separation zones, multibeam sonar, predictive models, recirculating flow, river mile 44.5, river mile 45, sandbar morphology, sandbars, sediment depostion, sediment erosion, sediment transport, sedimentation, stream channel, stream discharge, streamflow, streamflow condtions, streamflow models, streamflow velocity, streamflow velocity profile measurements, topographic data, topography, total station, Fewer tags

Long-term sandbar monitoring data along the Colorado River in Marble and Grand Canyons, Arizona

This data release comprises nearly three decades of measurements of sandbar topography for monitoring sites along the Colorado River in Grand Canyon National Park and Glen Canyon National Recreation Area. The data were collected to monitor the effects of the operations of Glen Canyon Dam on sandbars, which are also recreational campsites. The data were collected by the US Geological Survey Grand Canyon Monitoring and Research Center in cooperation with Northern Arizona University. Funding for data collection, processing, and reporting has been provided by the Glen Canyon Dam Adaptive Management Program administered by the US Department of the Interior Bureau of Reclamation.

Tags: Arizona, Colorado River, Ecology, Geography, Geomorphology, All tags... Glen Canyon Dam, Glen Canyon National Recreation Area, Grand Canyon National Park, Hydrogeology, Information Sciences, Remote Sensing, USGS Science Data Catalog (SDC), Water Resources, aquatic ecosystems, campsites, dam operations, dams, deposition, elevation, erosion, field experiments, field inventory and monitoring, geomorphology, geoscientificInformation, high-flow experiments, hydrology, hydropower, inlandWaters, measurements, monitoring, power generation water use, rebuild sandbars, recreation, recreational campsites, river ecosystems, rivers, sandbar topography, sandbars, sedimentation, size and condition of the sandbars, terrestrial ecosystems, topography, water resources, Fewer tags