The U.S. Army Fort Irwin National Training Center (NTC), approximately 35 miles north-northeast of Barstow, California, obtains all of its potable water supply from three groundwater basins (Irwin, Langford, and Bicycle Basins) within the NTC boundaries. In these basins, groundwater withdrawals exceed natural recharge, resulting in water-level declines. However, managed aquifer recharge using treated wastewater has offset water-level declines in Irwin Basin. Additionally, localized water-quality changes have occurred in some parts of Irwin Basin as a result of human activities (for example, wastewater disposal practices, landscape irrigation, and (or) leaking pipes). As part of a research study in cooperation with the U.S. Environmental Protection Agency (EPA), the U.S. Geological Survey (USGS) collected geophysical data to do a site characterization of an irrigated field (Four-plex baseball field) in the Irwin Basin. To aid in the understanding of the subsurface near the Four-plex baseball fields the USGS collected borehole geophysical data during 2018–2020. Natural gamma and neutron geophysical logs were collected in two monitoring wells that were installed by the EPA during 2018–19. Fluid resistivity, natural gamma, and electromagnetic induction logs were repeated in one of the EPA monitoring wells in February 2020; these types of geophysical logs also were collected at a nearby monitoring well on the eastern side of the Four-plex baseball field.

The U.S. Army Fort Irwin National Training Center (NTC), approximately 35 miles north-northeast of Barstow, California, obtains all of its potable water supply from three groundwater basins (Irwin, Langford, and Bicycle Basins) within the NTC boundaries. In these basins, groundwater withdrawals exceed natural recharge, resulting in water-level declines. However, managed aquifer recharge using treated wastewater has offset water-level declines in Irwin Basin. Additionally, localized water-quality changes have occurred in some parts of Irwin Basin as a result of human activities (for example, wastewater disposal practices, landscape irrigation, and (or) leaking pipes). As part of a research study in cooperation with the U.S. Environmental Protection Agency (EPA), the U.S. Geological Survey (USGS) collected geophysical data to do a site characterization of an irrigated field (Four-plex baseball field) in the Irwin Basin. To aid in the understanding of the subsurface near the Four-plex baseball fields the USGS collected borehole geophysical data during 2018–2020. Natural gamma and neutron geophysical logs were collected in two monitoring wells that were installed by the EPA during 2018–19. Fluid resistivity, natural gamma, and electromagnetic induction logs were repeated in one of the EPA monitoring wells in February 2020; these types of geophysical logs also were collected at a nearby monitoring well on the eastern side of the Four-plex baseball field.

The collection of borehole geophysical logs and images and continuous water-level data was conducted by the U.S. Geological Survey South Atlantic Water Science Center in the vicinity of the GMH Electronics Superfund site near Roxboro, North Carolina, during December 2012 through July 2015. The study purpose was part of a continued effort to assist the U.S. Environmental Protection Agency in the development of a conceptual groundwater model for the assessment of current contaminant distribution and future migration of contaminants. Previous work by the U.S. Geological Survey South Atlantic Water Science Center at the site involved similar data collection, in addition to surface geologic mapping and passive diffusion bag sampling within monitoring wells (Chapman and others, 2013). Geophysical logs, borehole imagery, pumping data, and heat-pulse flow measurements were collected and are presented within this data release. The data within this page contain .csv files with caliper, natural gamma, resistivity, fluid temperature, fluid specific conductance, and heat-pulse flow measurements (ambient and stressed conditions).

This dataset contains altitudes of selected beds and inferred faults in boreholes within an area of interest determined by the U.S. Environmental Protection Agency (EPA) at the Valmont TCE Superfund site in Luzerne County, Pennsylvania. The selected beds correspond to sections of borehole geophysical logs with elevated natural gamma activity as described in the U.S. Geological Survey (USGS) Open-File Report 2021–1093 (Senior and others, 2021). Geophysical logs were correlated on multiple cross sections in this USGS report, which showed these geologic features and inferred faults in the subsurface. Additionally, thin coal or coaly beds were identified from borehole density logs (Senior and others, 2021). The altitudes of these geologic features where they intersect boreholes as displayed on the cross sections are provided here, as well as locational information for each borehole. Naming conventions used for beds are provided in this dataset only and are not present in Senior and others (2021), thus cross sections from Senior and others (2021) with added labels for bed identifiers are also provided.

This dataset contains altitudes of selected beds and inferred faults in boreholes within an area of interest determined by the U.S. Environmental Protection Agency (EPA) at the Valmont TCE Superfund site in Luzerne County, Pennsylvania. The selected beds correspond to sections of borehole geophysical logs with elevated natural gamma activity as described in the U.S. Geological Survey (USGS) Open-File Report 2021–1093 (Senior and others, 2021). Geophysical logs were correlated on multiple cross sections in this USGS report, which showed these geologic features and inferred faults in the subsurface. Additionally, thin coal or coaly beds were identified from borehole density logs (Senior and others, 2021). The altitudes of these geologic features where they intersect boreholes as displayed on the cross sections are provided here, as well as locational information for each borehole. Naming conventions used for beds are provided in this dataset only and are not present in Senior and others (2021), thus cross sections from Senior and others (2021) with added labels for bed identifiers are also provided.

In 2020, the U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Energy (DOE) for Naval Reactors Laboratory Field Office or Naval Reactors Facility (NRF), drilled and constructed borehole USGS 151 (433846112540701) for stratigraphic framework analyses at the Idaho National Laboratory (INL) near the NRF, located in southeastern Idaho. Borehole USGS 151 was continuously cored from approximately 48 to 1,070 feet below land surface (BLS) and rotary drilled from approximately 1,070 to 1,720 feet BLS. Core drilling was discontinued after 1,070 feet BLS and changed over to straight rotary drilling due to funding constraints and deadlines. The USGS collected select geophysical data, daily drilling notes, and prepared detailed core descriptions for core collected to 1,070 ft BLS, which are included as part of this data release. The USGS Research Drilling Program (RDP) performed the core drilling operations and well construction between June 4, 2020 to September 21, 2020; additionally, the USGS RDP collected geophysical data, single caliper log, that was collected on August 15, 2020. The USGS INL Project Office collected multiple geophysical logs on September 15, 2020. Select geophysical data include natural gamma, caliper, neutron, and gamma-gamma density logs which were examined synergistically with available core material to identify contacts between basalt flows and location and thickness of sediment layers. Additionally, a gyroscopic deviation survey was performed and analyzed to reflect the projected well bore path. Geophysical data were collected using Century™ multi-parameter logging probes and select logs are displayed in well log figures. Geophysical data shown in figure displays include the natural gamma and neutron probe (9055C), caliper probe (9065A), gamma-gamma density probe (0024C), and gyroscopic deviation probe (9095C). With the exception of the caliper log, all geophysical data were collected through drill pipe after reaching total depth. Geophysical log data not represented in figure displays can be obtained by downloading attached LAS files. Drill core was taken to the USGS Lithologic Core Storage Library for storage and permanent archive located at Central Facilities Area on the INL. Drill core was photographed and described using standardized methods (Johnson and others, 2005). These standardized methods make use of commercially available software that include using a procedure developed by the USGS INL Project Office. The standardized method maximizes description and minimizes interpretation.

In 2019 and 2020, the U.S. Geological Survey (USGS), in cooperation with the U.S. Department of Energy (DOE) for Naval Reactors Laboratory Field Office or Naval Reactors Facility (NRF), drilled and constructed borehole USGS 152 (433906112553401) for seismic and stratigraphic framework analyses at the Idaho National Laboratory (INL) near the NRF, located in southeastern Idaho. Borehole USGS 152 was continuously cored from approximately 19 to 1,259 ft below land surface (BLS) and rotary drilled from approximately 1,259 to 1,630 ft BLS. Core drilling was discontinued after 1,259 ft BLS and changed over to straight rotary drilling due to funding constraints and deadlines. Core logs are displayed for three borings (USGS 152, USGS 152A, and USGS 152B) that all originate from the same surface location. To allow collection of open hole geophysical logs, the borehole was cemented and drilled out to stabilize difficult sections. Following cementing, the borehole cement was redrilled; however, on two separate occasions this resulted in a separate borehole core. At the onset of a new borehole, core was collected, and the borehole was given a subsequent name (USGS 152A and USGS 152B). Some overlap in cores was noted along with core depths and drilling dates. Core recovered from USGS 152 include depths from 18.5 to 749.0 ft between September 23, 2019 to July 5, 2020 with a hiatus during winter; USGS 152A was cored from 679.5 to 1007.0 ft between July 6, 2020 and August 20, 2020; USGS 152B was cored from 889.5 to 1259 ft between August 21, 2020 and October 3, 2020. The USGS collected select geophysical data, daily drilling notes, and prepared detailed core descriptions for core collected to 1,259 ft BLS, which are included as part of this data release. Also included are drilling field notes from INL subcontractor WOOD. The USGS Research Drilling Program (RDP) performed the core drilling operations and well construction between September 23, 2019, to October 3, 2020; additionally, the USGS RDP collected geophysical data, a single mechanical caliper (caliper) log on September 28, 2020. ' The USGS INL Project Office collected multiple geophysical logs on September 22, 2020. Select geophysical data include natural gamma, caliper, neutron, neutron porosity, and gamma-gamma density logs which were examined synergistically with available core material to identify contacts between basalt flows and location and thickness of sediment layers. Additionally, a gyroscopic deviation survey was performed and analyzed to reflect the projected well bore path. Geophysical data were collected using Century™ multi-parameter logging probes and select logs are displayed in well log figures. Geophysical data shown in figure displays include the natural gamma and neutron probe (9055C), caliper probe (9065A), gamma-gamma density probe (0024C), and gyroscopic deviation probe (9095C). With the exception of the caliper log which was ran though the encased borehole, all geophysical data were collected through the drill rod. All logs were ran from the bottom-up after reaching total unobstructed depth. Geophysical log data not represented in figure displays can be obtained by downloading attached LAS files or by visiting USGS - GeoLog Locator. The three borehole cores from USGS 152 was taken to the USGS Lithologic Core Storage Library for storage and permanent archive located at Central Facilities Area on the INL. Drill core was photographed and described using standardized methods which make use of commercially available software that include using a procedure developed by the USGS INL Project Office. The standardized method maximizes description and minimizes interpretation.

Borehole log number, State Well Number, location, construction information, and any wells tests performed on select wells from the Anza basin, Anza, CA. Also includes a lithologic data for a sub-set of borehole logs identified based on best coverage and representation of data within the study area.

Borehole log number, State Well Number, location, construction information, and any wells tests performed on select wells from the Anza basin, Anza, CA. Also includes a lithologic data for a sub-set of borehole logs identified based on best coverage and representation of data within the study area.

From October 2016 to July 2018, the U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers and Maine Department of Transportation, collected surface, marine and borehole geophysical surveys to characterize the subsurface materials on land and under the water at a former mine facility in Brooksville, Maine. Borehole geophysical logs were collected in five boreholes from May 2-3, 2017 to identify geophysical properties, including the electrical properties and natural gamma emissions, which can be related to geologic materials behind casing. In addition, fluid electrical conductivity and temperature were collected through the water column in the well. Results can be used to identify the water level and the lithologic contacts in the subsurface. Natural gamma, fluid electrical conductivity, temperature and electromagnetic induction logs are provided in a series of files within a compressed (zip) file. Equipment used, measurement units and calibration information are described in the log files.