Data

This dataset contains site information and results of flood frequency analysis for 64 urban streamflow gaging stations (streamgages) operated by the U.S. Geological Survey (USGS) in Alabama and Mississippi. Site information and annual peak-flow data from the 1885 - 2024 water years were obtained from the USGS National Water Information System (NWIS) database (U.S. Geological Survey, 2025...

This dataset includes radiocarbon ages, wavelength dispersive X-ray fluorescence (WD-XRF) major-oxide and trace-element whole-rock analyses, and glass, olivine, and pyroxene analyses by electron microprobe (EPMA) of spatter and lava samples from the summit and Southwest Rift Zone of Kīlauea volcano, Island of Hawaiʻi. All of the radiocarbon ages were analyzed by DirectAMS in Bothell...

In November of 2021, the U.S. Geological Survey acquired high-resolution P- and S-wave seismic data at two seismic recording stations in Tulare and Fresno counties, California: Berkeley Digital Seismic Network BK.LIND and BK.KARE. We deployed 60 DTCC SmartSolo 3-component nodal seismometers (“nodes”) at 2-m intervals along a linear array at each seismic recording station. The nodes...

Coastal communities are uniquely vulnerable to sea-level rise and severe storms such as hurricanes. These events enhance the dispersion and concentration of natural and anthropogenic chemicals and pathogenic microorganisms that could adversely affect the health and resilience of coastal communities and ecosystems in subsequent years. The U.S. Geological Survey has developed the Sediment...

This U.S. Geological Survey (USGS) Data Release includes phytoplankton data collected from four reservoirs in Kansas, during August 2020 through August 2022. All data are reported as raw calculated values and are not rounded to USGS significant figures. The dataset includes all routine and quality assurance/quality control samples collected at twenty-five locations within Marion...

High resolution fractional tree cover and change over time for Olympic, Mount Rainier, and Glacier National Parks from the mid-1980s to the mid-2020s. Date of annual snapshots of tree cover and the temporal range of change over time in tree cover vary by location. See metadata files associated with individual parks for specific details.

This dataset contains U-Th isotope ratios and trace element abundances for hydrothermal siliceous sinter deposits from several geyser localities in El Tatio Geyser Field, Chile.

This dataset contains hourly moisture content, salinity, and temperature measurements for sediment within a dune profile at Madeira Beach, Florida, USA. The data was collected between January 25, 2023, and August 31, 2023, following impacts from Hurricane Idalia. Data were collected using 5 moisture probes that extended 90 centimeters (cm) below the surface, with sensors spaced 10 cm...

This data release describes data that were contributed to the Global Lakes Ecosystem Observation Network (GLEON) FunAqua project, a global data compilation effort. Goals of the FunAqua project are to document the drivers of global aquatic fungal diversity and determine the breadth of the niche of aquatic fungi locally, globally, and in relation to soil and leaves. Data contributed by the...

The catastrophic, explosive eruption of Mount St. Helens, Washington, on May 18, 1980, is the most well-known eruption of the volcano. Less well known is that the May 18 eruption marked the beginning of a period of eruptive activity that lasted through 1986. Beginning in October 1980, a series of 17 dome-building episodes added millions of cubic meters of lava to the crater floor. Most...

During water years 2016–2023 (a water year is the period from October 1 to September 30 and is designated by the year in which it ends), the U.S. Geological Survey (USGS), in cooperation with the Illinois Environmental Protection Agency (Illinois EPA), operated continuous monitoring stations on eight of the major rivers in Illinois to better quantify nutrient and sediment loadings from...

Geochemical and mineralogical characterization data was collected for samples of the Greenhorn Formation taken from the USGS Portland 1 core, which is stored in the USGS Core Research Center (library number E099 https://my.usgs.gov/crcwc/core/report/11834). The data was integrated with sedimentological descriptions in a manuscript (Flaum and others, 2025) that includes revised...