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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...
Model Archive - Statistical analysis of the influence of conservation implementation on water quality during surface runoff events at edge-of-field monitoring sites located in the Laurentian Great Lakes Basin, 2012 to 2021 Model Archive - Statistical analysis of the influence of conservation implementation on water quality during surface runoff events at edge-of-field monitoring sites located in the Laurentian Great Lakes Basin, 2012 to 2021
This is an archive of model code used in statistical analysis of the influence of conservation implementation on water quality during surface runoff events at edge-of-field monitoring sites located in the Laurentian Great Lakes Basin, using data collected from 2012 to 2021. The workflow includes two types of analysis: 1) analysis of covariance (ANCOVA) for paired sites and 2) generalized...
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 (ver. 2.0, January 2026) Simulations of Groundwater Nitrogen Transport in the Long Island, New York Aquifer System Under Potential Nitrogen Management Scenarios (ver. 2.0, January 2026)
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 (ver. 2.0, January 2026) MODFLOW 6 and MODPATH 7 Models for Simulating Groundwater Flow and Nitrogen Transport in the Long Island, New York Aquifer System (ver. 2.0, January 2026)
This groundwater model application data release 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