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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...
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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...
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These data were compiled during a laboratory experiment showing the turbidity response to increasing silt and clay concentration. The sediment used for the laboratory experiment was collected in the Grand Canyon study area, from the bank of the Little Colorado River, approximately 1 kilometer upstream from its confluence with the Colorado River. The sediment was passed through a 63 µm sieve to isolate the silt-and-clay-size fraction. The silt and clay was completely dried in an oven (at 105 degrees Celsius for 12 hours), weighed, mechanically disaggregated, and added in stages to a measured volume of water to calculate concentration. The sediment was kept in suspension with an electric stirrer and turbidity was...
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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.
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This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP program is administered by USDA FSA and has been established to support two main FSA strategic goals centered on agricultural production. These are, increase stewardship of America's natural resources while enhancing the environment, and to ensure commodities are procured and distributed effectively and efficiently to increase food security. The NAIP program supports these goals by acquiring and providing ortho imagery that has been collected during the agricultural growing season in the U.S. The NAIP ortho imagery is tailored to meet FSA requirements and is a fundamental tool used to support FSA farm and conservation programs....
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This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP program is administered by USDA FSA and has been established to support two main FSA strategic goals centered on agricultural production. These are, increase stewardship of America's natural resources while enhancing the environment, and to ensure commodities are procured and distributed effectively and efficiently to increase food security. The NAIP program supports these goals by acquiring and providing ortho imagery that has been collected during the agricultural growing season in the U.S. The NAIP ortho imagery is tailored to meet FSA requirements and is a fundamental tool used to support FSA farm and conservation programs....
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This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP program is administered by USDA FSA and has been established to support two main FSA strategic goals centered on agricultural production. These are, increase stewardship of America's natural resources while enhancing the environment, and to ensure commodities are procured and distributed effectively and efficiently to increase food security. The NAIP program supports these goals by acquiring and providing ortho imagery that has been collected during the agricultural growing season in the U.S. The NAIP ortho imagery is tailored to meet FSA requirements and is a fundamental tool used to support FSA farm and conservation programs....
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These data are a species-level classification map of riparian vegetation in the Colorado River riparian corridor in Grand Canyon, Arizona, USA. The classification is derived from 0.2 m pixel resolution multispectral aerial imagery acquired in May 2013. The classification spans the riparian zone of the river corridor between Glen Canyon Dam near Page, Arizona, and Lake Mead at Pearce Ferry, Arizona. The classification is divided into 5 distinct reaches of the river: Glen Canyon, Marble Canyon, Eastern Grand Canyon, Western Grand Canyon upstream of Diamond Creek, and Western Grand Canyon downstream of Diamond Creek. The method used for classification was a combination of supervised Classification And Regression Tree...
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These data include image-based classifications of total vegetation from 1965, 1973, 1984, 1992, 2002, 2004, 2005, and 2009, and characteristics of the river channel along the riparian area of the Colorado River between Glen Canyon Dam and Lake Mead Reservoir.
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In May 2013, the Grand Canyon Monitoring and Research Center (GCMRC) of the U.S. Geological Survey’s (USGS) Southwest Biological Science Center (SBSC) acquired airborne multispectral high resolution data for the Colorado River in Grand Canyon in Arizona, USA. The imagery data consist of four bands (blue, green, red and near infrared) with a ground resolution of 20 centimeters (cm). These data are available to the public as 16-bit geotiff files. They are projected in the State Plane (SP) map projection using the central Arizona zone (202) and the North American Datum of 1983 (NAD83). The assessed accuracy for these data is based on 91 Ground Control Points (GCPs), and is reported at 95% confidence as 0.64 meters...
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These data are classified maps of water in the Colorado River at a discharge of approximately 227 meters squared/second in Grand Canyon from Glen Canyon Dam to Pearce Ferry in Arizona. The data are derived from interpretation of multispectral high resolution airborne imagery that was acquired in May 2013. The water classification data have the same 0.2-meter ground resolution as the imagery. These data have not undergone a statistical accuracy assessment, but they are based on methods that included image interpretation to exhaustively identify water which have been shown to produce very high classification accuracies and excellent correlation between maps of total vegetation produced by independent analysts and...


map background search result map search result map Four Band Multispectral High Resolution Image Mosaic of the Colorado River Corridor, Arizona - Data Channel Mapping of the Colorado River in Grand Canyon National Park, Arizona, May 2009, river miles 29 to 62—Data Riparian Vegetation and Colorado River—Data Water classification of the Colorado River Corridor, Grand Canyon, Arizona, 2013—Data Geomorphology and Campsite Data, Colorado River, Marble and Grand Canyon, Arizona FSA 10:1 NAIP Imagery m_3810908_nw_12_1_20160709_20161017 3.75 x 3.75 minute JPEG2000 from The National Map FSA 10:1 NAIP Imagery m_3810908_se_12_1_20160709_20161017 3.75 x 3.75 minute JPEG2000 from The National Map FSA 10:1 NAIP Imagery m_3810908_sw_12_1_20160708_20161017 3.75 x 3.75 minute JPEG2000 from The National Map Laboratory experiment data—turbidity response to increasing silt and clay concentration USGS 1:250000-scale Quadrangle for Marble Canyon, AZ 1961 USGS 1:250000-scale Quadrangle for Marble Canyon, AZ 1956 USGS 1:250000-scale Quadrangle for Marble Canyon, AZ 1956 USGS 1:250000-scale Quadrangle for Marble Canyon, AZ 1956 USGS 1:62500-scale Quadrangle for Marble Canyon, CA 1951 USGS 1:62500-scale Quadrangle for Marble Canyon, CA 1951 USGS 1:62500-scale Quadrangle for Marble Canyon, CA 1951 USGS 1:24000-scale Quadrangle for Marble Canyon, UT 1985 Acoustic backscatter - Data and Python Code Riparian species vegetation classification data for the Colorado River within Grand Canyon derived from 2013 airborne imagery USGS 1:250000-scale Quadrangle for Marble Canyon, AZ 1959 FSA 10:1 NAIP Imagery m_3810908_nw_12_1_20160709_20161017 3.75 x 3.75 minute JPEG2000 from The National Map FSA 10:1 NAIP Imagery m_3810908_se_12_1_20160709_20161017 3.75 x 3.75 minute JPEG2000 from The National Map FSA 10:1 NAIP Imagery m_3810908_sw_12_1_20160708_20161017 3.75 x 3.75 minute JPEG2000 from The National Map USGS 1:24000-scale Quadrangle for Marble Canyon, UT 1985 Channel Mapping of the Colorado River in Grand Canyon National Park, Arizona, May 2009, river miles 29 to 62—Data USGS 1:62500-scale Quadrangle for Marble Canyon, CA 1951 USGS 1:62500-scale Quadrangle for Marble Canyon, CA 1951 USGS 1:62500-scale Quadrangle for Marble Canyon, CA 1951 Geomorphology and Campsite Data, Colorado River, Marble and Grand Canyon, Arizona USGS 1:250000-scale Quadrangle for Marble Canyon, AZ 1961 USGS 1:250000-scale Quadrangle for Marble Canyon, AZ 1956 USGS 1:250000-scale Quadrangle for Marble Canyon, AZ 1956 USGS 1:250000-scale Quadrangle for Marble Canyon, AZ 1956 USGS 1:250000-scale Quadrangle for Marble Canyon, AZ 1959 Four Band Multispectral High Resolution Image Mosaic of the Colorado River Corridor, Arizona - Data Riparian Vegetation and Colorado River—Data Water classification of the Colorado River Corridor, Grand Canyon, Arizona, 2013—Data Laboratory experiment data—turbidity response to increasing silt and clay concentration Acoustic backscatter - Data and Python Code Riparian species vegetation classification data for the Colorado River within Grand Canyon derived from 2013 airborne imagery