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.

This data release provides borehole location and lithology information from selected boreholes in the East Mesa and surrounding areas of Imperial County, California. The area of focus includes parts of the Imperial, Ogilby, and Amos Valley groundwater basins. The purpose of the study is to estimate the future Total Dissolved Solids (TDS) concentration in groundwater pumped by the LCWPS into the All-American Canal. The borehole data included in this data release can be used to evaluate the hydrogeologic framework of the study area, and determine the geometry, extent, and physical characteristics of hydrogeologic materials within the aquifer system. Borehole location and lithology data were sourced from the California Department of Water Resources Online System of Well Completion Reports (OSWCR; California Department of Water Resources, 2021) as well as direct communication with California Department of Water Resources (California Department of Water Resources, 2024); the U.S. Bureau of Reclamation Final Environmental Impact Statement Geohydrology Appendix for the All-American Canal Lining Project (U.S. Bureau of Reclamation, 1994); well log archives from the U.S. Bureau of Reclamation Yuma Area Office (U.S. Bureau of Reclamation, 2023); the U.S. Geological Survey (USGS) Professional Paper Series number 486 chapter K (Loeltz and others, 1975); a USGS publication detailing the characterization of the groundwater system near the Lower Colorado Water Supply Project (Coes and others, 2015), geothermal well reports (Coplen and others, 1973; Elders and others, 1974), and geothermal wells from California Geologic Energy Management Division (CalGEM; California Department of Conservation, 2024).

This data release contains digital data generated by the U.S. Geological Survey under cooperative agreements with Sonoma County Water Agency and the California State Water Resources Control Board to characterize the three-dimensional hydrogeology and water quality of the Russian River Watershed, located in the northern part of the California Coast Ranges section of the Pacific Border province. This dataset contains borehole lithologic and hydrologic data used to support development of the framework model . The borehole dataset is released as a series of .csv ascii files including (1) individual borehole location and construction information, (2) downhole lithologic interval data derived from well driller’s lithology logs and parsed to a series of textural descriptors, and (3) calculated specific capacity from driller’s pumping tests. In addition to the borehole data, a folder containing drillers logs used in the dataset, but not in California Department of Water Resources database of scanned driller’s logs is contained within the data release for reference.

This data release contains digital data generated by the U.S. Geological Survey under cooperative agreements with Sonoma County Water Agency and the California State Water Resources Control Board to characterize the three-dimensional hydrogeology and water quality of the Russian River Watershed, located in the northern part of the California Coast Ranges section of the Pacific Border province. This dataset contains borehole lithologic and hydrologic data used to support development of the framework model . The borehole dataset is released as a series of .csv ascii files including (1) individual borehole location and construction information, (2) downhole lithologic interval data derived from well driller’s lithology logs and parsed to a series of textural descriptors, and (3) calculated specific capacity from driller’s pumping tests. In addition to the borehole data, a folder containing drillers logs used in the dataset, but not in California Department of Water Resources database of scanned driller’s logs is contained within the data release for reference.

This geospatial data set represents about 2,500 locations of boreholes, shafts, tunnels, and drifts on and around the Nevada Test Site (NTS) where rock-samples have been collected. Information from the rock-samples is summarized for each hole and includes lithologic descriptions, physical and mechanical properties, fracture characteristics, and hydraulic properties where holes were completed below the water table. The digital data are accessed from the webpage for the NTS U.S. Geological Survey (USGS) Core Library and Data Center, Mercury, Nevada. Links to additional information, such as water-level data from the National Water Inventory System (NWIS), and USGS borehole graphical information are included for some holes.

This geospatial data set represents about 2,500 locations of boreholes, shafts, tunnels, and drifts on and around the Nevada Test Site (NTS) where rock-samples have been collected. Information from the rock-samples is summarized for each hole and includes lithologic descriptions, physical and mechanical properties, fracture characteristics, and hydraulic properties where holes were completed below the water table. The digital data are accessed from the webpage for the NTS U.S. Geological Survey (USGS) Core Library and Data Center, Mercury, Nevada. Links to additional information, such as water-level data from the National Water Inventory System (NWIS), and USGS borehole graphical information are included for some holes.

Temperature measurement data obtained from boreholes for the Association of American State Geologists (AASG) geothermal data project. Typically bottomhole temperatures are recorded from log headers, and this information is provided through a borehole temperature observation service for each state. Service includes header records, well logs, temperature measurements, and other information for each borehole. Information presented in Geothermal Prospector was derived from data aggregated from the borehole temperature observations for all states. For each observation, the given well location was recorded and the best available well identifier (name), temperature and depth were chosen. The "Well Name Source," "Temp. Type" and "Depth Type" attributes indicate the field used from the original service. This data was then cleaned and converted to consistent units. The accuracy of the observation's location, name, temperature or depth was note assessed beyond that originally provided by the service. Bottom hole temperature datasets from the AASG were downloaded from repository.usgin.org between May 16 and May 24, 2013. The data were cleaned to remove null and non-real entries, and units were standardized across all datasets. When selecting key attributes, specific criteria were used to determine the best available values. For temperature, corrected temperature was preferred, followed by measured temperature. For depth, depth of measurement was prioritized, with true vertical depth and driller total depth used as alternatives. Well identification was assigned based on the API number when available, followed by the well name, with the observation URI used as a last option.

In 2022, Cold Steel Mechanical, contracted by the Idaho Department of Water Resources (IDWR), drilled and constructed 12 wells in Raft River Valley, Idaho. The wells were drilled using compressed air, dual rotary methods and were fully cased to completed depths. The U.S. Geological Survey (USGS) collected groundwater level and select geophysical data at each well between November 15th and 18th, 2022. Geophysical data were collected using Century™ multi-parameter logging probes and select logs are displayed in well log figures. Select geophysical logs include natural gamma, neutron, gamma-gamma density, specific conductance, and temperature. Geophysical data shown in well log figures were collected using the natural gamma, temperature, and specific conductance probe (9042A), neutron probe (9057A), and gamma-gamma density probe (0024C). All geophysical data were collected through cased wells. For each well, the primary 9042A probe survey was conducted from the top-down and repeat 9042A surveys were performed from the bottom up after reaching total unobstructed depth. With exception to Well 4, where all surveys were performed from the top-down, geophysical data collected with the 9057A and 0024C probes were performed from the bottom-up after reaching total unobstructed depth. Geophysical logs, driller reports, and regional geology were examined synergistically to identify lithologic units and contacts. Geophysical data can be obtained by downloading the attached LAS files or using the USGS GeoLog Locator and searching by well identifier. Citations: U.S. Geological Survey, 2022, U.S. Geological Survey GeoLog Locator: U.S. Geological Survey web interface, at https://doi.org/10.5066/F7X63KT0.

In 2022, Cold Steel Mechanical, contracted by the Idaho Department of Water Resources (IDWR), drilled and constructed 12 wells in Raft River Valley, Idaho. The wells were drilled using compressed air, dual rotary methods and were fully cased to completed depths. The U.S. Geological Survey (USGS) collected groundwater level and select geophysical data at each well between November 15th and 18th, 2022. Geophysical data were collected using Century™ multi-parameter logging probes and select logs are displayed in well log figures. Select geophysical logs include natural gamma, neutron, gamma-gamma density, specific conductance, and temperature. Geophysical data shown in well log figures were collected using the natural gamma, temperature, and specific conductance probe (9042A), neutron probe (9057A), and gamma-gamma density probe (0024C). All geophysical data were collected through cased wells. For each well, the primary 9042A probe survey was conducted from the top-down and repeat 9042A surveys were performed from the bottom up after reaching total unobstructed depth. With exception to Well 4, where all surveys were performed from the top-down, geophysical data collected with the 9057A and 0024C probes were performed from the bottom-up after reaching total unobstructed depth. Geophysical logs, driller reports, and regional geology were examined synergistically to identify lithologic units and contacts. Geophysical data can be obtained by downloading the attached LAS files or using the USGS GeoLog Locator and searching by well identifier. Citations: U.S. Geological Survey, 2022, U.S. Geological Survey GeoLog Locator: U.S. Geological Survey web interface, at https://doi.org/10.5066/F7X63KT0.