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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Abundance, occupancy and habitat data recordings for Coqui Llaneros near Caño Tiburones; Arrecibo, Puerto Rico Abundance, occupancy and habitat data recordings for Coqui Llaneros near Caño Tiburones; Arrecibo, Puerto Rico
The Coquí Llanero (Eleutherodactylus juanariveroi) is one of twelve remaining species of Eleutherodactylus frogs endemic to Puerto Rico. They are known only from three isolated populations separated from each other by ~30 km: Caño Tiburones, Arecibo; Sabana Seca, Toa Baja, and Carolina. These frogs are cultural icons and hold prominent roles in the energy flow of the island’s tropical...
PFAS in largemouth bass (Micropterus nigricans) and banded killifish (Fundulus diaphanus) from Select Waterbodies in Massachusetts PFAS in largemouth bass (Micropterus nigricans) and banded killifish (Fundulus diaphanus) from Select Waterbodies in Massachusetts
This study assessed site-specific differences in PFAS in fish from Ashumet Pond (2020 & 2022), Sudbury River (2023), and Great Herring Pond (reference site; 2022) in Massachusetts. Largemouth bass were collected from all sites and banded killifish were collected from Ashumet Pond only. Health assessments were performed and included histology of the liver, spleen, kidneys, gonad, and any
Coastal Land-Cover and Feature Datasets Derived From Landsat Satellite Imagery, Sabine Pass to Bay Coquette, Louisiana Coastal Land-Cover and Feature Datasets Derived From Landsat Satellite Imagery, Sabine Pass to Bay Coquette, Louisiana
This data release serves as an archive of coastal land-cover and feature datasets derived from Landsat satellite imagery from Sabine Pass to Bay Coquette, Louisiana (LA). A total of 179 images acquired between 2013 and 2024 were analyzed. Water, bare earth (sand), and vegetated land-cover classes were mapped using (1) successive thresholding and masking of the modified normalized...
Surface and shallow subsurface thermal maturity data for the Arkoma basin, Ouachita Mountains, and Ozark dome region of the U.S.A. Surface and shallow subsurface thermal maturity data for the Arkoma basin, Ouachita Mountains, and Ozark dome region of the U.S.A.
Thermal maturity data (vitrinite reflectance (VRo)) from the Arkoma basin, Ouachita Mountains, and Ozark dome region of the U.S. Data were originally collected in graduate student theses and dissertations, and in a research consortia ca. 1980-1990 under the advisement and leadership of David Houseknecht during his time at University of Missouri. Location data were originally in Township...
Above-water hyperspectral field spectroscopy and associated water quality measurements in the Sacramento-San Joaquin Delta, California, collected in 2024 and 2025 Above-water hyperspectral field spectroscopy and associated water quality measurements in the Sacramento-San Joaquin Delta, California, collected in 2024 and 2025
Broad-area, high-resolution, boat-based water quality mapping surveys of the Sacramento-San Joaquin Delta (Delta) were conducted in June and September of 2024. Each survey was comprised of one day of high-resolution mapping. The regions covered included Discovery Bay and Old and Middle Rivers in the South Delta Tidal Transition Zone. On each day, the route of the mapping survey was...
Estimated crop irrigation water use withdrawals in Big Chino Groundwater Subbasin of the Verde River Groundwater Basin, Arizona for 2024 Estimated crop irrigation water use withdrawals in Big Chino Groundwater Subbasin of the Verde River Groundwater Basin, Arizona for 2024
Observations of irrigated agricultural land within the Big Chino Groundwater Subbasin of the Verde River Groundwater Basin in Arizona. Crops were verified in situ once in 2024 on Aug 14th; based on digitized field boundaries. Field boundaries were digitized from U.S. Department of Agriculture, National Agriculture Imagery Program County Mosaic 2023 imagery for Arizona and supplemented...