Data Releases
The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols if they exist and when they are relevant and appropriate. For datasets of a given type, and if national or international metadata standards exist, the data are indexed with metadata that facilitates access and integration.
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Invertebrate community datasets from before and after piscicide application in two high elevation Rocky Mountain streams in Colorado, 2015 through 2020 Invertebrate community datasets from before and after piscicide application in two high elevation Rocky Mountain streams in Colorado, 2015 through 2020
In western United States streams, Oncorhynchus virginalis stomias (Greenback Cutthroat Trout; GBCT) was thought to be extinct; however, a genetically verified population was identified and used for subsequent conservation efforts to reestablish populations. To restore native trout habitat, stream reaches upstream of a dispersal barrier are treated with a piscicide (rotenone) to remove...
Data Release: Blowing in the wind: anemochory in blackbrush habitat of South Texas, 2023 Data Release: Blowing in the wind: anemochory in blackbrush habitat of South Texas, 2023
Wind has the potential to carry seeds long-distances and could be an important consideration in the management of natural vegetation along the U.S.-Mexico Border with border barrier infrastructure. Shrubs, native grasses, the invasive Pennisetum ciliaris (buffelgrass), soil particles and pebbles dispersed in the ecosystem, especially in maximum wind and/or precipitation events. While...
Geologic Radon Potential Map of the United States Geologic Radon Potential Map of the United States
Radon is an odorless and invisible radioactive gas that is naturally released from rocks, soil, and water. According to the U.S. Environmental Protection Agency (EPA) and the U.S. Surgeon General, radon is the second leading cause of lung cancer in the United States. Recent epidemiological studies have also identified linkages between radon exposure and cerebrovascular diseases including...
Potential Explanatory Variables for Groundwater Quality in California Potential Explanatory Variables for Groundwater Quality in California
This data release codifies and attributes values for potential explanatory factors to groundwater well locations and to groundwater basins in California. The groundwater sites are 282,000 wells that have water-quality data and are listed in the California State Water Resources Control Boards' Groundwater Ambient Monitoring and Assessment Program Groundwater Information System (GAMA GIS)...
Estimation of Annual and Monthly Loads of Nitrate + Nitrite, Total Phosphorous, and Dissolved Phosphorus in Illinois for Water Years 1974 to 2022 Estimation of Annual and Monthly Loads of Nitrate + Nitrite, Total Phosphorous, and Dissolved Phosphorus in Illinois for Water Years 1974 to 2022
This data release contains data in support of "Diverging trends in Nitrate and Phosphorus Loads and Yields Across Illinois Watersheds, 1997–2022" (Kamrath and others, 2025). It contains input and output data used to estimate total nitrate + nitrite, dissolved phosphorous and total phosphorous loads for sites in Illinois from water years 1974 to 2022. The input data includes "input-data...
Physical, chemical, and biological results from a Lagrangian study of water and sediment transported by Powder River in central Wyoming and southeastern Montana, between June 27 – July 3, 2019 Physical, chemical, and biological results from a Lagrangian study of water and sediment transported by Powder River in central Wyoming and southeastern Montana, between June 27 – July 3, 2019
A Lagrangian study was conducted in 2019 that followed two water masses in the Powder River from central Wyoming to southeastern Montana. The study characterized the changes of the in-stream transport of sediment and associated chemical and biological constituents. Depth-integrated water samples (using an isokinetic nozzle) and river bottom sediment samples were collected at six mainstem...
Annual Estimates of Suspended Sediment Concentration and Load to Support Trend Analysis on the Lower Mississippi River and Atchafalaya River, 1978–2021 Annual Estimates of Suspended Sediment Concentration and Load to Support Trend Analysis on the Lower Mississippi River and Atchafalaya River, 1978–2021
This data release contains annual estimates of total, fine (
Groundwater-level altitudes and volatile and semivolatile organic compound concentrations at the Petro-Chemical Systems, Inc. (Turtle Bayou) Superfund site, Liberty County, Texas, 2024 Groundwater-level altitudes and volatile and semivolatile organic compound concentrations at the Petro-Chemical Systems, Inc. (Turtle Bayou) Superfund site, Liberty County, Texas, 2024
The U.S. Geological Survey (USGS), in cooperation with the U.S. Environmental Protection Agency (EPA), collected groundwater-level altitude and water-quality data from selected monitoring wells at the Petro-Chemical Systems, Inc. (Turtle Bayou) Superfund site in Liberty County, Texas on April 29 and November 13, 2024. These data were collected to obtain information that could be used to...
Groundwater-quality sampling at the Ouachita-Nevada Wood Treaters Superfund Site, Reader, Arkansas, October 2024 Groundwater-quality sampling at the Ouachita-Nevada Wood Treaters Superfund Site, Reader, Arkansas, October 2024
The Ouachita-Nevada Wood Treaters Superfund Site is a former wood-treatment facility located on approximately five acres of undeveloped land along the west side of North Main Street in Reader, Arkansas in Ouachita County. The former facility used wood treatment products containing pentachlorophenol (PCP) and heating oil, a chromium-copper-arsenate solution, and a mixture of diesel fuel...
Soil-quality sampling at the Falcon Refinery Superfund site near Ingleside, Texas, January 2025 Soil-quality sampling at the Falcon Refinery Superfund site near Ingleside, Texas, January 2025
The Falcon Refinery Superfund site (hereinafter referred to as “the site”) is in an unincorporated area of San Patricio County, approximately one mile southeast of Ingleside, Texas. The site is an inactive petroleum refinery that operated during the 1980s and consisted of 32 aboveground storage tanks (ASTs) used to store petroleum products. Since 2004, many of these ASTs have been...
K-Ar and Ar-Ar age data for some Cenozoic and pre-Cenozoic rocks in the eastern Mojave Desert area and southern Sierra Nevada, southwestern United States K-Ar and Ar-Ar age data for some Cenozoic and pre-Cenozoic rocks in the eastern Mojave Desert area and southern Sierra Nevada, southwestern United States
We report rock and mineral K-Ar isotopic dates from 55 Cenozoic rocks and 49 pre-Cenozoic rocks from the eastern Mojave Desert in southeastern California, Nevada, and Arizona and 3 pre-Cenozoic rocks from the southern Sierra Nevada, California. For many of the samples two separate minerals were dated. We also report Ar-Ar dates from 7 pre-Cenozoic rocks in the eastern Mojave Desert.
Planning for the Future of Aquatic Flows: A Comprehensive Database of River Water Quality Literature in the United States from 1997-2024 Planning for the Future of Aquatic Flows: A Comprehensive Database of River Water Quality Literature in the United States from 1997-2024
This dataset is a "catalog of literature" produced in support of a review paper titled: "What Goes with the Flow: A Review of Linkages among Climate Change, Low-Flows, Water Quality, and Instream Flow Management Response across the United States". The dataset consists of six tabular sheets, each of them containing information critical to the review paper: a summary of search terms used...