This feature class is updated every business day using Python scripts and the Well Log database. Please disregard the "Date Updated" field as it does not keep in sync with DWR's internal enterprise geodatabase updates.This feature class contains the location and site attributes of drilled wells in Nevada. Licensed well drillers submit well logs (reports) to NDWR. This information is entered into the Well Log database in SQL Server. Latitude and Longitude coordinates are displayed in GIS format for convenience in identifying wells. Two additional fields are calculated for specific capacity and transmissivity. Specific capacity is yield divided by drawdrawn. Transmissivity is specific capacity times 267. If yield or drawdown fields are blank, specific capacity is blank.You may search for well reports at https://tools.water.nv.gov/WellLogQuery.aspxNevada Administrative Code for Underground Water and Wells

This data set was derived from the Nevada Department of Conservation and Natural Resources, Division of Water Resources (NDWR) well log data base (http://water.nv.gov/Engineering/wlog/wlog.cfm). This data set was developed from a version of the data base downloaded October 26, 2005 and reflects the wells entered into the data base up to that date. The data base generally contains logs for wells drilled since 1984, however, some basins have information about older wells. No attempts were made to edit or alter the coordinate or attribute information in the data base as presented by NDWR on the date of download.

The Departments of Natural Resources and Renewables and Nova Scotia Environment (NSE) maintains an electronic Well Log Database, which contains water well construction and location information for water wells in the province of Nova Scotia. Information in the database is entered from original paper copies of well logs that are submitted by certified well drillers and well diggers to NSE. The database currently contains approximately 115,500 well logs constructed between 1940 and 2012, inclusive.

Master well database for all logs and other well data pertaining to the Fallon FORGE site. Tables are formatted in NGDS Teir 3 schema where appropriate; redundancies between tables are omitted, and should be queried off of the main WellHeader table. All relationships are set on the "HeaderURI" primary key. Tables: WellHeader - well locations and information ChemFluid - aqueous chemistry analyses ChemRock - rock chemistry analyses DensityCore - rock densities from core FracturesInduced - induced borehole fractures FracturesNatural - natural borehole factures LithIntercepts - lithology picks from cuttings and core MagSuscCore - magnetic susceptibility for core samples MagSuscPmag - magnetic susceptibility for pmag samples PTSLogs - pressure-temperature-spin logs WirelineLogs - digital wireline logs (21-31 only)

The United States Gulf Coast Basin Curated Wells and Logs Database (CWLDB) is an online repository with stratigraphic information for petroleum wells in the United States portion of the onshore Gulf of Mexico Basin that provides several of the following attributes: a) deep penetrations (generally, total depth of 10,000 feet or more), b) high quality and diverse geophysical well log suites, c) lithostratigraphic logs, d) biostratigraphic units (biozones) and reports, and/or e) core or cuttings samples.

This data release provides updated borehole information to build upon and further refine a three-dimensional (3-D) texture model of valley-fill deposits in the Central Valley created by Faunt and others (2009). This model aids in understanding the aquifer system of the entire valley and will be later utilized in a groundwater flow model. The original database contained approximately 8,500 boreholes and with the addition of new data, the model now contains 14,683 boreholes. The new borehole lithologic data was sourced from the California Department of Water Resources (DWR) Online System of Well Completion Reports (OSWCR) and the California Central Valley Groundwater-Surface Water Simulation Model (C2VSim). This dataset contains (1) tabular data of individual borehole general location and construction information, (2) downhole lithologic interval data derived from well driller’s lithology logs and parsed to a series of textural descriptors.

This data set is one of many developed in support of The High Plains Groundwater Availability Project and the U.S. Geological Survey Data Series report: titled Geodatabase Compilation of Hydrogeologic, Remote Sensing, and Water-Budget-Component data for the High Plains aquifer, 2011 (DS 777). This dataset contains point vector data of locations of 16,950 wells and 90,155 well log records located in areas overlying the northern High Plains aquifer in the United States. The northern High Plains aquifer underlies 61.7 million acres (96,400 square miles) in Colorado, Kansas, Nebraska, South Dakota, and Wyoming. These data were acquired from different sources and synthesized together in one dataset. Included in this dataset is a point feature class (pts_Depth2Bedrock) of elevation values and depth values to the base of the northern High Plains aquifer as well as geospatial coordinates, a table containing a digital version of well logs (tbl_LithologyAggregate) with detailed subsurface material, texture, and sorting.

An extensive archive containing more than 10,000 historical (1918–2020) geophysical logs collected in conjunction with studies done by various entities and more than 2,000 additional donated well and geophysical logs are stored in hard-copy at the Central Texas Branch of the Oklahoma-Texas Water Science Center (OTWSC) in Austin, Texas. This dataset addresses the need to preserve these records electronically by providing a scanned and indexed collection of 11,171 of these records. Data are provided as a comma-separated value (CSV) text file and a Microsoft Access database in ACCDB format containing detailed well header information for each record. Also included are zipped files containing the geophysical log scans in Portable Document Format (PDF).The original dataset was published in January 2024, and revised in September 2024. This revision incorporates 5,113 additional log scans and header information into the original dataset containing 6,058 logs scans and header information. The original logs scans and header information were not changed except for minor edits as a result of additional quality assurance reviews .

These data encompass data classified from the borehole textures. The U.S Geological Survey (USGS) classified the Well Log Database of the Central Valley, California, 2021, into Central_Valley_Borehole_with_Lithology_Classification.csv. Lithologic log descriptions served as the basis for division into discrete binary texture classifications of either “coarse grained” or “fine grained” intervals. Values of 1 (coarse grained), 0 (fine grained) or 2 (unknown) were determined using the table found in Central_Valley_Lithology_Classifier.csv. Percent Coarse values for each well log were calculated at 15.24 m for the entire Central valley (Percent_Coarse_meters_wells.csv).

These data present a ground-water inventory of existing geospatial data and other information needed to determine the extent and characteristics of the aquifers in the Tahoe Basin. Geospatial and other data include well information from various local, state, and federal agencies; geophysical surveys; and results of available ground-water and geological studies. The compilation and development of a ground-water inventory geospatial database will assist the United States Forest Service in better assessing the present and future impacts on ground-water resources within the Lake Tahoe Basin.

The County Well Index (CWI) is a database system developed by the Minnesota Geological Survey (MGS) and the Minnesota Department of Health (MDH) for the storage, retrieval, and editing of water-well information. The database contains basic information on well records (e.g. location, depth, static water level) for wells drilled in Minnesota. The database also contains information on the well log and the well construction for many of the wells.

This Well Completion Report dataset represents an index of records from the California Department of Water Resources' (DWR) Online System for Well Completion Reports (OSWCR). This dataset is for informational purposes only. All attribute values should be verified by reviewing the original Well Completion Report. Known issues include: - Missing and duplicate records - Missing values (either missing on original Well Completion Report, or not key entered into database) - Incorrect values (e.g. incorrect Latitude, Longitude, Record Type, Planned Use, Total Completed Depth) - Limited spatial resolution: The majority of well completion reports have been spatially registered to the center of the 1x1 mile Public Land Survey System section that the well is located in.

The Division of Water Rights and Utah Geological Survey (UGS) began a cooperative program to analyze water well cuttings and prepare a geologic log for selected wells in 1995. Samples are taken at regular drilling intervals by water well drillers. The samples are analyzed by UGS and a geologic log and sample analysis log is created.

This Open Geospatial Consortium (OGC) GeoPackage (.gpkg) contains water-well point features and associated tables for the state of Minnesota that have been reformatted based on a USGS profile of the OGC GroundWaterML2 (GWML2) standard (https://docs.ogc.org/is/19-013/19-013.html). Additionally, the water-well records have been quality-assured to remove or nullify parts of water-well records found to be erroneous or logically inconsistent, harmonized via the assignment of common data codes in the lithologic log, and supplemented with estimates of transmissivity from the analysis of specific-capacity data. The National Water-Well Database (NWWDB) is a compilation of water-well records from state-managed databases that have been standardized to a common format for consistency across state and administrative boundaries. Water-well completion reports that are submitted to permitting state agencies by licensed drillers constitute a large source of hydrogeologic information, including the locations and distribution of water wells, construction materials and completion depths, lithologic logs, groundwater levels, and the results of pumping or aquifer tests.

The NSTA has recently purchased digital well data from CGG for an additional 2235 E&A wells. These have been selected from across the UKCS to complement the existing joined digital well logs that the NSTA has previously released either in support of licence rounds (e.g. 30th Licensing Round, Greater Buchan Area Supplementary Round) or as part of the Government Seismic Data initiatives. Where available, the NSTA has purchased joined digital well logs, deviation data and checkshot data for these additional wells. These data have been loaded to the National Data Repository (NDR). The NSTA’s Well Data Availability layer has also been updated to reflect which well data has been purchased. These data are being released under the OGA Licence (OGAL), the terms of which are available on download from the NDR.

Point geodatabase with a record for each well report in Ecology's. Points are located by quarter quarter section centroid. Points contain all well report types including water wells, resource protection wells, and decommissioned wells.

This resource is a compilation of Illinois well log observation data from oil and gas wells compiled by the Illinois Geological Survey. Data for over 29,000 well logs are available in the following formats: web feature service, web map service, ESRI service endpoint, and an Excel workbook for download. The Excel workbook contains 5 worksheets, including information about the template with notes related to revisions of the template, resource provider information, the data, a field list to assist in data mapping, and vocabularies (log type codes) used to populate the data worksheet. This data was provided by the Illinois Geological Survey and made available for distribution through the National Geothermal Data System.

description: This dataset contains basic information describing well logs for water wells and geothermal wells as compiled by the Virginia Department of Mines, Minerals and Energy, Division of Geology and Mineral Resources, published as a Web feature service, a Web map service, an ESRI service, and as a downloadable Excel spreadsheet for the National Geothermal Data System. The documents contain 11 worksheets, including information about the template, notes related to revisions of the template, Resource provider information, the data, a field list (data mapping view) and a worksheet with vocabularies for use in populating the spreadsheet (data valid terms).; abstract: This dataset contains basic information describing well logs for water wells and geothermal wells as compiled by the Virginia Department of Mines, Minerals and Energy, Division of Geology and Mineral Resources, published as a Web feature service, a Web map service, an ESRI service, and as a downloadable Excel spreadsheet for the National Geothermal Data System. The documents contain 11 worksheets, including information about the template, notes related to revisions of the template, Resource provider information, the data, a field list (data mapping view) and a worksheet with vocabularies for use in populating the spreadsheet (data valid terms).

The Well Log Tracking System (WELTS) contains water well construction and lithologic information submitted to the Division of Mining, Land and Water, Alaska Hydrologic Survey by water well contractors as required per Alaska State Statute 41.08.020(b4) authority delegated to the Alaska Hydrologic Survey per Department Order 115, require of water well contractors, the filing with it of basic water and aquifer data normally obtained, including but not limited to well location, estimated elevation, well driller's logs, pumping tests and flow measurements, and water quality determinations. Additionally, per Alaska Administrative Code, Title 11 Natural Resources, Part 6 Lands, Chapter 93 Water Management, Article 2 Appropriation and Use of Water 11 AAC 93.140(a):

For a drilled, driven, jetted, or augered well constructed, the water well contractor or a person who constructs the well shall file a report within 45 days after completion with both the property owner and the department. The report must contain the following information as applicable: (1) the method of construction; (2) the type of fluids used for drilling; (3) the location of the well; (4) an accurate log of the soil and rock formations encountered and the depths at which the formations occur; (5) the depth of the casing; (6) the height of the casing above ground; (7) the depth and type of grouting; (8) the depth of any screens; (9) the casing diameter; (10) the casing material; (11) the depth of perforation or opening in the casing; (12) the well development method; (13) the total depth of the well; (14) the depth of the static water level; (15) the anticipated use of the well; (16) the maximum well yield; (17) the results of any well yield, aquifer, or drawdown test that was conducted; (18) if the water well contractor or person who constructs the well installs a pump at the time of construction, the depth of the pump intake and the rated pump capacity at that depth. (b) When the drill rig is removed from the well site, the well must be sealed with a sanitary seal and a readily accessible means provided to allow for monitoring of the static water level in the well. (c) A hand-dug well that is permanently decommissioned shall be filled by the land owner to a point 12 in above the existing ground level with well-compacted impermeable material. (d) A well, other than a hand-dug well, that is permanently decommissioned by the owner of the well must comply with the requirements of 18 AAC 80.015(e) . (e) If the department believes that an encounter of oil, gas, or other hazardous substance is likely to result from well drilling, the department will notify the Alaska Oil and Gas Conservation Commission, and the provisions of AS 31.05.030 (g) may apply. (f) The department will notify the Department of Environmental Conservation of any permanently abandoned well that may contaminate water of the state under the provisions of 18 AAC 80. (g) Information required by (a) of this section is required for any water well that has been deepened, modified, or abandoned, and for any water supply well or water well that is used for monitoring, observation, or aquifer testing, including a dry or low-yield water well that is not used. This data characterizes the geographic representation of well logs within the State of Alaska contained in the Well Log Tracking System. The shape file was developed using well location information submitted with well logs. Well locations represented by a gold star symbol, represent the approximate (centroid) location, and may represent a cluster of wells. Well locations represented by a blue circle symbol, represent wells submitted with latitude and longitude coordinates. Each feature has an associated attribute record, including a Well Log Tracking System identification number which serves as an index to case-file information. Those requiring more information regarding WELTS should contact the Alaska Department of Natural Resources Alaska Hydrologic Survey directly.

These data contain basic information describing well logs and compiled by the Texas Bureau of Economic Geology, published as a downloadable file, ESRI Service, and as a Web Feature service for the National Geothermal Data System. The downloadable documents contain 9 worksheets, including information about the template, notes related to revisions of the template, resource provider information, the data, a field list (data mapping view) and a worksheet with vocabularies for use in populating the spreadsheet (data valid terms). Data from 2,491 total well logs are included. Fields in the data table include Well Name, API Number, Ended Drilling Date, Well Type, Bottom Logged Interval,and Log Notes.