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Tidal Influence on Water Quality Parameters at Tributary Confluences of the Anacostia River, 2025 Tidal Influence on Water Quality Parameters at Tributary Confluences of the Anacostia River, 2025
This metadata record contains eight shapefiles with water quality parameters at the Anacostia River confluences of Hickey Run and Watts Branch, at Washington, DC, in 2025. Included in the dataset are water quality parameters (pH, turbidity, dissolved oxygen, specific conductance, and water temperature) and coordinates measured in these confluences by a remote-controlled autonomous boat...
Transient Electromagnetic Sounding Data from the Area Around the Dinero Mine Tunnel Near Leadville, Colorado Transient Electromagnetic Sounding Data from the Area Around the Dinero Mine Tunnel Near Leadville, Colorado
During August 2023, transient electromagnetic (TEM) surveys were carried out at select locations in Lake County near Leadville, Colorado upgradient from the Dinero tunnel bulkhead. TEM data were collected using an ABEM WalkTEM2 advanced instrument running acquisition software version 1.3.7.4 and using a single-turn transmitter loop (Tx) and a center-loop receiver (Rx). Tx loop dimensions...
Ground-Penetrating Radar for Depth to Bedrock in Select Watersheds near Los Planes in Southern Baja California Sur, Mexico Ground-Penetrating Radar for Depth to Bedrock in Select Watersheds near Los Planes in Southern Baja California Sur, Mexico
During December 2022 and April 2023, the U.S. Geological Survey, in cooperation with U.S. Water Partnership, collected ground-penetrating radar (GPR) data in select small subwatersheds and arroyos within the Los Planes watershed south of La Paz in southern Baja California Sur, Mexico to map the depth to bedrock for use as inputs to a groundwater flow model. This data release contains the...
Chloride Regression Model and Mass Balance for Different Deicing Salt Application Rates on Three Watersheds in Essex County, New York Chloride Regression Model and Mass Balance for Different Deicing Salt Application Rates on Three Watersheds in Essex County, New York
This data release contains tabular data for a regression model used to estimate daily mean chloride concentration from specific conductance, road salt application data, and mass balance data for a study of road salt runoff in Essex County, New York. Road salt application rates were provided by the New York State Department of Transportation (NYS DOT) and the Town of North Elba, NY. Data...
MODFLOW-NWT model used to simulate groundwater flow in Wake County, North Carolina, 2000 through 2070 MODFLOW-NWT model used to simulate groundwater flow in Wake County, North Carolina, 2000 through 2070
The U.S. Geological Survey (USGS) and Wake County Environmental Services developed a collaborative study to assess the hydrogeologic setting and groundwater flow conditions for Wake County, North Carolina. A groundwater-flow model was developed to conceptualize the fractured-rock aquifer system in Wake County and to assess historic and future groundwater resource availability. The...
Simulations of Groundwater Nitrogen Transport in the Long Island, New York Aquifer System under Potential Nitrogen Management Scenarios Simulations of Groundwater Nitrogen Transport in the Long Island, New York Aquifer System under Potential Nitrogen Management Scenarios
This data release contains simulation results from twenty-three (23) transient inset numerical models of the eastern part of Long Island, New York that includes the Peconic River, and estuaries around the North and South Fork. The models simulate nitrogen concentrations in the aquifer and nitrogen loads to surface water bodies from 2020-2120 under different nitrogen inputs that represent...
MODFLOW 6 and MODPATH 7 Models for Simulating Groundwater Flow and Nitrogen Transport in the Long Island, New York Aquifer System MODFLOW 6 and MODPATH 7 Models for Simulating Groundwater Flow and Nitrogen Transport in the Long Island, New York Aquifer System
This groundwater model archive documents transient and steady-state regional and inset numerical models of the Long Island aquifer system that simulate groundwater flow and nitrogen transport for the period 1900-2019 using the US Geological Survey groundwater modeling software MODFLOW 6 (Langvin and others, 2017 and 2022). The development and calibration of the regional groundwater flow...
Freshwater fish and mussel projections in the Northeastern United States at the HUC12 scale under different climate and land use scenarios Freshwater fish and mussel projections in the Northeastern United States at the HUC12 scale under different climate and land use scenarios
These data comprise the results of an analysis to 1. develop freshwater fish and mussel models using survey occurrence data, land use data, stream flow data, and stream temperature data within the Northeast United states, 2. predict the impacts of climate change on vulnerable groups of freshwater fish and mussel species, and 3. assess the potential for different management interventions...
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)) data 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 was originally in...