These data were compiled to determine the rate and magnitude of channel-planform change, and the topographic change of the channel and floodplain in Echo, Island, and Rainbow Parks within Dinosaur National Monument between the 1990s and 2019. The objective(s) of our study were to analyze geomorphic change within Echo, Island, and Rainbow Parks to determine the magnitude and style of channel change with respect to the past two decades of combined streamflow from Flaming Gorge Dam and the relatively unregulated Yampa River. These data represent river channel planform delineations made within a geographic information system, and topographic channel and floodplain data collected using total stations, depth sounders, Real-Time Kinematic GNSS, and multibeam sonar. These data were collected in June 2019.

These data were compiled to determine the rate and magnitude of channel-planform change, and the topographic change of the channel and floodplain in Echo, Island, and Rainbow Parks within Dinosaur National Monument between the 1990s and 2019. The objective(s) of our study were to analyze geomorphic change within Echo, Island, and Rainbow Parks to determine the magnitude and style of channel change with respect to the past two decades of combined streamflow from Flaming Gorge Dam and the relatively unregulated Yampa River. These data represent river channel planform delineations made within a geographic information system, and topographic channel and floodplain data collected using total stations, depth sounders, Real-Time Kinematic GNSS, and multibeam sonar. These data were collected in June 2019.

These data were compiled to determine the rate and magnitude of channel-planform change, and the topographic change of the channel and floodplain in Echo, Island, and Rainbow Parks within Dinosaur National Monument between the 1990s and 2019. The objective(s) of our study were to analyze geomorphic change within Echo, Island, and Rainbow Parks to determine the magnitude and style of channel change with respect to the past two decades of combined streamflow from Flaming Gorge Dam and the relatively unregulated Yampa River. These data represent river channel planform delineations made within a geographic information system, and topographic channel and floodplain data collected using total stations, depth sounders, Real-Time Kinematic GNSS, and multibeam sonar. These data were collected by U.S. Geological Survey, Southwest Biological Science Center, Grand Canyon Monitoring and Research Center researchers in June 2019.

These data were compiled to determine the rate and magnitude of channel-planform change, and the topographic change of the channel and floodplain in Echo, Island, and Rainbow Parks within Dinosaur National Monument between the 1990s and 2019. The objective(s) of our study were to analyze geomorphic change within Echo, Island, and Rainbow Parks to determine the magnitude and style of channel change with respect to the past two decades of combined streamflow from Flaming Gorge Dam and the relatively unregulated Yampa River. These data represent river channel planform delineations made within a geographic information system, and topographic channel and floodplain data collected using total stations, depth sounders, Real-Time Kinematic GNSS, and multibeam sonar. These data were collected by U.S. Geological Survey, Southwest Biological Science Center, Grand Canyon Monitoring and Research Center researchers in June 2019.

These data were compiled to determine the rate and magnitude of channel-planform change, and the topographic change of the channel and floodplain in Echo, Island, and Rainbow Parks within Dinosaur National Monument between the 1990s and 2019. The objective(s) of our study were to analyze geomorphic change within Echo, Island, and Rainbow Parks to determine the magnitude and style of channel change with respect to the past two decades of combined streamflow from Flaming Gorge Dam and the relatively unregulated Yampa River. These data represent river channel planform delineations made within a geographic information system, and topographic channel and floodplain data collected using total stations, depth sounders, Real-Time Kinematic GNSS, and multibeam sonar. These data were collected in June 2019.

These data were compiled to determine the rate and magnitude of channel-planform change, and the topographic change of the channel and floodplain in Echo, Island, and Rainbow Parks within Dinosaur National Monument between the 1990s and 2019. The objective(s) of our study were to analyze geomorphic change within Echo, Island, and Rainbow Parks to determine the magnitude and style of channel change with respect to the past two decades of combined streamflow from Flaming Gorge Dam and the relatively unregulated Yampa River. These data represent river channel planform delineations made within a geographic information system, and topographic channel and floodplain data collected using total stations, depth sounders, Real-Time Kinematic GNSS, and multibeam sonar. These data were collected in June 2019.

These data were compiled to determine the rate and magnitude of channel-planform change, and the topographic change of the channel and floodplain in Echo, Island, and Rainbow Parks within Dinosaur National Monument between the 1990s and 2019. The objective(s) of our study were to analyze geomorphic change within Echo, Island, and Rainbow Parks to determine the magnitude and style of channel change with respect to the past two decades of combined streamflow from Flaming Gorge Dam and the relatively unregulated Yampa River. These data represent river channel planform delineations made within a geographic information system, and topographic channel and floodplain data collected using total stations, depth sounders, Real-Time Kinematic GNSS, and multibeam sonar. These data were collected by the U.S. Geological Survey, Southwest Biological Science Center, Grand Canyon Monitoring & Research Center in June 2012 and 2019.

These data consist of rectified aerial photographs, measurements of active channel width, measurements of river and floodplain bathymetry and topography, and ancillary data. These data are specific to the corridor of the Colorado River in Canyonlands National Park between Potash, Utah and the confluence of the Green and Colorado Rivers near Spanish Bottom, Utah. The time period for these data are 1940 to 2018. The shapefile data are measurements of features of the active river channel and floodplains of the Colorado River. The raster data are aerial images and digital elevation models (DEMs) for segments of the Colorado River in Canyonlands National Park, Utah. The aerial images depict the river channel and adjacent floodplains for most of the corridor of the Colorado River in Canyonlands National Park upstream from the confluence with the Green River. The images were acquired from public sources and orthorectified and mosaiced for this study. The DEMs cover the river channel and adjacent floodplain for the Lockhart Creek segment of the Colorado River within Canyonlands National Park and include both bathymetric and topographic data. The bathymetric data were collected by the U.S. Geological Survey Grand Canyon Monitoring and Research Center with funding provided by the National Park Service. The topographic data are airborne lidar data that were collected for the state of Utah by a contractor. The lidar data are available at https://doi.org/10.5069/G9RV0KSQ.

These data consist of rectified aerial photographs, measurements of active channel width, measurements of river and floodplain bathymetry and topography, and ancillary data. These data are specific to the corridor of the Colorado River in Canyonlands National Park between Potash, Utah and the confluence of the Green and Colorado Rivers near Spanish Bottom, Utah. The time period for these data are 1940 to 2018. The shapefile data are measurements of features of the active river channel and floodplains of the Colorado River. The raster data are aerial images and digital elevation models (DEMs) for segments of the Colorado River in Canyonlands National Park, Utah. The aerial images depict the river channel and adjacent floodplains for most of the corridor of the Colorado River in Canyonlands National Park upstream from the confluence with the Green River. The images were acquired from public sources and orthorectified and mosaiced for this study. The DEMs cover the river channel and adjacent floodplain for the Lockhart Creek segment of the Colorado River within Canyonlands National Park and include both bathymetric and topographic data. The bathymetric data were collected by the U.S. Geological Survey Grand Canyon Monitoring and Research Center with funding provided by the National Park Service. The topographic data are airborne lidar data that were collected for the state of Utah by a contractor. The lidar data are available at https://doi.org/10.5069/G9RV0KSQ.

Bathymetric, topographic, and grain-size data were collected in May 2014 along a 27 mile (43.5 kilometer) reach of the Colorado River in Grand Canyon National Park, Arizona. The study reach begins at river mile 61.1, about 0.6 miles (1 kilometer) above the confluence of the Colorado and Little Colorado Rivers and ends at river mile 88.1 at the upstream boundary of the Bright Angel Rapid (Phantom Ranch boat beach). We refer to this reach as Eastern Grand Canyon (EGC) and all products include the EGC abbreviation in the filename. 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 a digital elevation model (DEM) and bed-sediment distribution map. This data release contains four items: 1) a DEM of the study reach; 2) a hillshade model of the DEM; 3) a bed sediment distribution map of the study reach; and 4) a shapefile of fiducial polygons used to assess DEM uncertainty. These data were collected by the Southwest Biological Science Center, Grand Canyon Monitoring and Science Center as a component of a larger effort to monitor the status and trends of sand storage along the Colorado River in Grand Canyon National Park.