Data

Radiometric data were collected at the Grand Junction Regional Airport radiometric calibration facility in March 2023 and August 2024. The facility consists of five ~9 by ~12 m (30 x 40 feet) concrete pads, each 18 in thick. Each pad provides sources of radioelements that are spatially homogeneous (see Ward, 1978). Three pads are dedicated K, Th, and U pads, each of which contains high...

Clear Lake is a 180 km2 freshwater lake located approximately 120 km northwest of Sacramento in the California Coast Range. The lake is a popular sport-fishing destination, however, there are fish consumption advisories associated with mercury (Hg) contamination for several species. The lake has three arms: a large open-water region to the northwest (Upper Arm), a smaller and narrower...

This dataset was compiled and analyzed to support the goals of quantifying groundwater contributions to Lake Huron and exploring the impacts of groundwater on Lake Huron processes in accordance with the Lake Huron Cooperative Science and Monitoring Initiative 2022 field season. This data release contains three child items that describe 1) the characterization of the Lake Huron Basin into

Seeds extracted from the gastrointestinal contents of Burmese pythons (Python bivittatus) and Black and White Tegu (Salvator merianae) lizards in South Florida were sorted and identified to genus or species. Seeds were then categorized as invasive (category I: history of negative impacts or category II: potential for negative impacts), native, non-native, threatened, endangered, and...

This data release includes the downscaled climate inputs from four Weather Generator Scenarios and hydrologic outputs using the Basin Characterization Model (BCM) version 8 (v8), described in Flint and others (2021a), with a 270 by 270-meter spatial resolution at a monthly time steps from water years 1916 to 2018 for California. Weather Generator scenarios defined as: BaseW = baseline...

This dataset consists of three tables containing sample information and uranium-lead (U-Pb) isotopic data and U-Pb ages measured in zircon collected from igneous rocks in Alaska. The samples were collected between 2019 and 2023 and analyzed by laser ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS) by GeoSep Services. The dataset includes 412 analyses across 13 samples...

The IntELiMon team releases Terrestrial Laser Scanner (TLS) derived datasets via the project's viewer daily. The datasets include multiple types of information related to each acquisition, including 3D point clouds, field observations, and surface and canopy fuel metrics in csv format. CSDGM FGDC XML metadata are included as a static accompanying file along with the dynamic datasets...

This dataset contains geospatial data compiled and generated to support supervised land cover classification and habitat monitoring across nine Wildlife Management Areas (WMAs) in Alabama. The dataset integrates Landsat 9 surface reflectance imagery acquired between May and July 2024, the 2021 National Land Cover Database (NLCD), NLCD-derived Tree Canopy Cover (TCC), a stacked predictor...

Impacts of dreissenid mussels (Dreissena spp.) on Great Lakes ecosystems are well documented, but a better understanding of mechanisms that cause variation in mussel abundance is needed. An outstanding question is how much mussel biomass is consumed by predation. To date, attention has mainly focused on invasive Round Goby (Neogobius melanostomus) predation of mussels. Biomass of native

The single database, assembled retrospectively between 2004 and 2007, which includes the following information: site name, desert region, distance (km) to the nearest settlement from the tortoise, unique identification number for the tortoise, sex, wear or aging class of the carapace, size of the tortoise, evidence of trauma to the gular horn and to shell and limbs, year collected, and...

To support floodplain forest research and management actions on the Upper Mississippi River System (UMRS), areas of forest loss, gain and persistence at least 0.1 hectare in size from 2010 to 2020 were mapped and analyzed. This forest cover transition data will allow researchers the ability to examine rates and patterns of forest cover loss, gain, and persistence and compare multiple...

Native freshwater mussels are a substantial resource of concern to resource managers because of their contribution to aquatic ecosystems, First Foods status for Native American tribes, and general imperilment. As such, resource managers in the USFWS Lower Great Lakes Fish and Wildlife Conservation Office partnered with USGS to characterize the native freshwater mussel assemblage in the...