Data

Bathymetric, topographic, and grain-size data were collected in April 2019 along a 58.6 mile (94.3 kilometer) reach of the Colorado River in Grand Canyon National Park, Arizona. The study reach begins at river mile 30, about 2.5 miles above South Canyon, and ends at river mile 88 at the upstream boundary of the Bright Angel Rapid (Phantom Ranch boat beach). This reach spans two...

These datasets includes physical and geochemical lab results of sediment samples collected from August 2017 to October 2018. Upland samples were collected at randomly selected sites in the watershed using the geographic information system (GIS) site-selection procedure. Three sets of passive suspended-sediment samplers were installed and sampled monthly. Streambank and streambed sediment...

These datasets includes physical and geochemical lab results of sediment samples collected from October 2016 to February 2018. Upland samples were collected at randomly selected sites in the watershed using the geographic information system (GIS) site-selection procedure. Passive suspended-sediment samplers were installed at three sites and sampled monthly. Streambank and streambed...

This dataset includes field and laboratory analyses of water samples collected from lakes, ponds, rivers, and streams in northwest Alaska within Cape Krusenstern National Monument, Noatak National Preserve, Kobuk Valley National Park, Gates of the Arctic National Park and Preserve, and Bering Land Bridge National Preserve. At sites across the five national park units, in situ water...

These data are comprised of measurements of elements (e.g., uranium, cobalt, nickel, copper, zinc, cadmium, lead, etc.), major anions (chloride, nitrite+nitrate as nitrogen, sulfate, etc.), organic carbon, and general water quality parameters measured in Pinyon Plain Mine containment pond water, sediment, vegetation, and aquatic invertebrate samples collected in calendar year 2025.

Groundwater, soil pore water, and surface water were collected in and near wetland P1 in the Cottonwood Lake Study Area, Stutsman County, North Dakota in August 2013. Groundwater was collected from established wells (17, 18, and 22) via peristaltic pump. Surface water was collected from P1 ponded water via grab sample. Soil pore water was collected using drive point samplers and one...

Uncrewed aerial system (UAS) imagery was collected over Cinder Lake Crater Field near Flagstaff, Arizona, a training site constructed in the late 1960s as a lunar analog site for Apollo astronauts and continues to serve as an operational analog environment. The DEM supports terrain analysis, visualization, illumination modeling, and mission simulation activities associated with planetary...

This dataset describes environmental DNA (eDNA) sample collections, DNA extractions, and DNA copy numbers (abundance of environmental DNA) for cisco Coregonus artedi, a native prey fish of restoration interest in the Laurentian Great Lakes, in tributaries to Lake Huron’s North Channel in Canada. Samples were collected during cisco spawning runs (mid-November) from 2022-2024.

This dataset records Cladophora and associated benthic algae, collectively Cladophora community or submerged aquatic vegetation (SAV), biomass collected during the growing season of 2022 at stations located along the U.S. shoreline of Lakes Michigan, Huron, Erie, and Ontario. It also records a variety of supporting data collected at Cladophora measurement stations. These supporting data...

This data release is companion to a manuscript entitled: "Long-term intermittent connection between the western Snake River Plain and Columbia Basin: a two-phased incision history of Hells Canyon". Here, we report the measured flow direction and compositions of clasts and detrital zircon U-Pb ages from samples collected from modern and ancestral rivers near the Lewiston Basin region. The...

This dataset contains summarized climate projection and historical climate statistics for selected extreme event and threshold‑based climate variables across the Southeast United States. Data are derived from downscaled CMIP6‑LOCA2 climate model outputs and observed historical precipitation and temperature data. Values are aggregated by U.S. state within the Southeast CONUS region and by

This data release contains a radar-based remote sensing product used to detect regions of surface change in southern Yukon Territory, Canada and southeast Alaska, United States between November 28, 2025 and December 9, 2025, based on the availability of Sentinel-1 satellite data. Much of this surface change is interpreted to have been triggered by the M7.0 Hubbard Glacier Earthquake that...