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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High resolution water quality and dissolved carbon data from a coastal Louisiana salt marsh from 2022 to 2023 (ver. 2.0, July 2025) High resolution water quality and dissolved carbon data from a coastal Louisiana salt marsh from 2022 to 2023 (ver. 2.0, July 2025)
Continuous water quality sensor data were collected at USGS 292939089544400 Wilkinson Bayou cutoff north of Wilkinson Bay, LA gage. Field water quality measurements were collected using a YSI EXO2 water quality sonde equipped with a data logger to capture hourly data using sensors for measuring water temperature, specific conductance, salinity, pH, oxidation and reduction potential (ORP)
Effects of Simulated Drought on Yellowcheek Darter (Nothonotus moorei) and Yoke Darter (Nothonotus juliae) Growth, Survival, and Refuge-use, 2024 Dataset Effects of Simulated Drought on Yellowcheek Darter (Nothonotus moorei) and Yoke Darter (Nothonotus juliae) Growth, Survival, and Refuge-use, 2024 Dataset
We used mesocosms to evaluate the effects of drought on Nothonotus moorei (Yellowcheek Darter) and Nothonotus juliae (Yoke Darter) survival, growth, and behavior. Survival was low and did not differ between treatments. Yoke Darters gained mass in control treatments, whereas Yellowcheek Darters did not differ between treatments. Habitat-use varied between treatment and species, with...
Digital database for the Preliminary geologic map of the Monkeys Head quadrangle, Mohave and La Paz Counties, Arizona Digital database for the Preliminary geologic map of the Monkeys Head quadrangle, Mohave and La Paz Counties, Arizona
This geologic database is a digitized version of the original 1:24,000-scale analog geologic map titled "Preliminary geologic map of the Monkeys Head quadrangle, Mohave and La Paz Counties, Arizona", published by the U.S. Geological Survey (USGS) in 1988. The Monkeys Head 7.5-minute quadrangle is located at the confluence of the Colorado and Bill Williams Rivers in westernmost Arizona...
West Lake Boudreaux Shoreline Protection and Marsh Creation (TE-46) 2012 land-water classification West Lake Boudreaux Shoreline Protection and Marsh Creation (TE-46) 2012 land-water classification
The Louisiana State Legislature created the Coastal Wetlands Planning, Protection and Restoration Act (CWPPRA) in order to conserve, restore, create and enhance Louisiana's coastal wetlands. The wetland restoration plans developed pursuant to these acts specifically require an evaluation of the effectiveness of each coastal wetlands restoration project in achieving long-term solutions to...
Detection of Apis mellifera DNA in spiked flowers under laboratory and natural conditions, Chesterton Indiana, 2023-2024 Detection of Apis mellifera DNA in spiked flowers under laboratory and natural conditions, Chesterton Indiana, 2023-2024
The data being released were part of a project funded by the Section 40804 Ecosystem Restoration of the Bipartisan Infrastructure Law (PL-117-58) in support of advancing a national revegetation effort. Data included are from a series of DNA degradation experiments targeting the mitochondrial 16S rRNA gene of the European honeybee (Apis mellifera). This study sought to determine how...
Video observations of Common Terns usurping and brooding Least Tern chicks Video observations of Common Terns usurping and brooding Least Tern chicks
These videos show a pair of common terns usurping a least tern nest with chicks. These data support a paired USGS authored manuscript.
Per- and Polyfluoroalkyl Substances in tree swallow gut contents Per- and Polyfluoroalkyl Substances in tree swallow gut contents
This data set is from a study examining the flow of per- and polyfluoroalkyl substances (PFAS) through food webs. The data are PFAS concentrations in gastrointestinal contents of tree swallows.
Ordinal-occurrence states of American pikas in the northern Sierra Nevada and southern Cascade Range from surveys during 2014-2019 Ordinal-occurrence states of American pikas in the northern Sierra Nevada and southern Cascade Range from surveys during 2014-2019
USGS researchers and technicians comprehensively surveyed each of 150 talus patches for evidence of American pika (Ochotona princeps) occurrence. Occurrence status at each patch was classified as either no pika evidence whatsoever, former pika occurrence, or current pika occurrence. Dataset also includes latitude and longitude, as well as mean elevation of the patch and the surveyor...
Surface Water-Quality Data and Nutrient Loads in Selected Rivers and Wastewater Treatment Facilities in the Connecticut River and Taunton River Study Areas in Massachusetts, 2019-2021 Surface Water-Quality Data and Nutrient Loads in Selected Rivers and Wastewater Treatment Facilities in the Connecticut River and Taunton River Study Areas in Massachusetts, 2019-2021
This U.S. Geological Survey (USGS) data release includes necessary information and data to support the analysis and interpretations of nutrient loading and sources of nitrogen in the associated companion USGS Scientific Investigations Report. This data release includes (1) summary statistics for discrete water-quality data collected at eight water-quality-monitoring stations in the...
Cladophora biomass and supporting data collected in the Great Lakes, 2023 (ver. 2.0, April 2025) Cladophora biomass and supporting data collected in the Great Lakes, 2023 (ver. 2.0, April 2025)
This dataset records Cladophora and associated benthic algae, collectively the Cladophora community or submerged aquatic vegetation (SAV), biomass collected during the growing season of 2023 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...
Laser-ablation inductively-coupled-plasma mass spectrometry and electron probe microanalyses of pyrite and pyrrhotite in tailings and ores from volcanogenic massive sulfide and sedimentary-exhalative deposits (ver. 2.0, June 2026) Laser-ablation inductively-coupled-plasma mass spectrometry and electron probe microanalyses of pyrite and pyrrhotite in tailings and ores from volcanogenic massive sulfide and sedimentary-exhalative deposits (ver. 2.0, June 2026)
Mine waste, including mill tailings, could host substantial critical mineral resources. Developing an understanding of the mineral hosts and occurrence of critical minerals in mine waste is essential to evaluating their resource potential. Volcanogenic massive sulfide (VMS) and sedimentary-exhalative (SEDEX) deposits are important global sources of copper, zinc, lead, gold, and silver...
Elemental and biological characteristics of riparian spiders collected along streams and tributaries in the Clark Fork Basin, Montana, July 2023 (ver. 1.1, March 2026) Elemental and biological characteristics of riparian spiders collected along streams and tributaries in the Clark Fork Basin, Montana, July 2023 (ver. 1.1, March 2026)
This data release includes laboratory analyses for spider tissue samples collected from 20 sites in riparian areas along streams in the upper Clark Fork Basin in western Montana during July 2023. Samples were collected by the U.S. Geological Survey (USGS) in cooperation with the University of Connecticut. Analyses include 56 elements, percent moisture, and nitrogen and carbon isotopes in...