This dataset shows the geographic location and depth to the seawater interface (SWI) in metres below groundwater level (mBGWL) in the Superficial Aquifer, in the Esperance groundwater area. This dataset is a derived location based on an assessment of data for the period November 2020 to November 2021. The 2016 Interpretation of TEMPEST Airbourne Electromagnetic Data from Esperance (Mira Geoscience) was also used in creating this dataset. This location can change pending known factors that impact the location of the seawater interface including the time of year, tidal movements, abstraction, recharge and throughflow. The full assessment of the SWI in this area is documented in report HR437 Esperance Seawater Interface Priority Area Assessment. This dataset is sourced from the Statewide Seawater Interface Project, funded by the Government of Western Australia under the State Groundwater Investigation Program. In the Esperance area, the project runs from April 2020 to March 2023 and the data are collected from: - Seawater interface monitoring (SWIM) bores installed or owned by the department - Downhole natural gamma and induction logging - Installation of data loggers and continuous static groundwater level (SWL) measurements from data loggers - Electrical conductivity (EC) depth profiling - Groundwater chemistry sampling. - Airborne electromagnetic (AEM) survey. The above data that is owned by the department can be downloaded from the Water Information Reporting (WIR) Portal or by contacting the Department. AEM survey data can be downloaded via the interactive geological map tool GeoVIEW.WA from the Department of Mines, Industry Regulation and Safety. Information on the SWI project can be found on the Western Australia State Government website (www.wa.gov.au).

This dataset shows the geographic location and elevation of the seawater interface (~10,000 us/cm) within the Superficial aquifer, in Cockburn groundwater area. This dataset is a derived location based on an assessment of data for the period 2018 to 2019. This location can change pending known factors that impact the location of the seawater interface including the time of year, tidal movements, abstraction, recharge and throughflow. The full assessment of the seawater interface in this area, including detailed methods is documented in report: Puthiaparampil J, Brandes de Roos I & Ryan SA, 2024, Cockburn seawater interface – Priority Area Assessment under the State groundwater investigation program, Hydrogeological Report Series HR443, Department of Water and Environmental Regulation, Western Australia. This dataset is sourced from the Statewide seawater interface project, funded by the Government of Western Australia under the State Groundwater Investigation Program. The data used in this layer is owned by the department can be downloaded from the Water Information Reporting (WIR) Portal or by contacting the Department. Information on the SWI project can be found on the Western Australia State Government website (www.wa.gov.au).

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This dataset comprises watertable salinity for Victoria. Salinity concentration has been mapped in mg/L for Total Dissolved Solids (TDS) using the following classes: <600, 601-1200, 1201-3100, 3101-5400, 5401-7100, 7101-10000, >10000. These classes reflect the beneficial use segments prescribed in the State Environment Protection Policy (Waters) (2018).

Interpretive and indicative Groundwater salinity mapping statewide. This dataset was formerly known as Groundwater Salinity Statewide (DOW-030)

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This dataset contains groundwater salinity information for boreholes which were less than 20m in depth and had terminated at least 30m above bedrock. The bores have been extracted predominantly from the Groundwater Management System (GMS) and the State Observation Bore Network (SOBN). It should be noted that the analysis undertaken with the salinity data was only of a preliminary nature and should be treated with a critical approach. Local validation of the data (e.g. screen depths) needs to be undertaken in detail. The dataset was compiled by GHD to inform the report 'Potential Influences of Geological Structures on Groundwater Flow Systems' for DEPI's Secure Allocation Future Entitlements (SAFE) Project.

This dataset contains groundwater salinity information for boreholes which had terminated at least 5m and no more than 50m above bedrock. The bores have been extracted predominantly from the Groundwater Management System (GMS) and the State Observation Bore Network (SOBN). It should be noted that the analysis undertaken with the salinity data was only of a preliminary nature and should be treated with a critical approach. Local validation of the data (e.g. screen depths) needs to be undertaken in detail. The dataset was compiled by GHD to inform the report 'Potential Influences of Geological Structures on Groundwater Flow Systems' for DEPI's Secure Allocation Future Entitlements (SAFE) Project.

The U.S. Geological Survey collected groundwater samples from 17 wells in the Indio subbasin (CA basin designation 7-21.01) of the Coachella Valley and surface water samples from two sites representing sources of recharge to the Indio subbasin in 2021. These samples are intended to provide inorganic water quality data, particularly total dissolved solids (TDS), within areas of the Indio subbasin not sampled for the Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project’s assessment of the quality of groundwater used for domestic and small system drinking water supplies in Coachella Valley (CODA). Other areas of special interest for the Indio salinity study were nearby managed aquifer replenishment facilities. Various well types were sampled including domestic, public supply, irrigation, and monitoring wells. The two surface water samples were collected in order to better understand primary sources of recharge to the Indio subbasin: the Whitewater River and the Colorado River via the Coachella Canal. Groundwater samples from all 17 wells were analyzed for field water-quality parameters, major ions and trace elements, chromium (VI), perchlorate, nutrients, carbon-14 in dissolved inorganic carbon, stable isotopic ratios of water, tritium, isotopes of sulfur in sulfate, sulfur hexafluoride, and noble gases. Groundwater levels were measured in 9 of the 17 wells. Surface water samples from both sites were analyzed for field water-quality parameters, major ions and trace elements, chromium (VI), perchlorate, nutrients, and stable isotopic ratios of water. All results are presented in this data release except for the isotopic ratios of strontium and boron in water. Data collected from 23 wells sampled in the Indio subbasin for the CODA assessment are not included in this data release but can be found here: https://doi.org/10.5066/P9UYXI95

This release contains borehole geophysical electrical log data (elogs), total dissolved solids sample data (TDS), and geostatistical program files used to estimate the salinity distribution in groundwater above and in the vicinity of the Montebello Oil Field, located near Los Angeles, California, USA. Original data are drawn from a variety of publicly available sources and are combined here for use in geostatistical simulation and estimation. The extent of the estimation area is a 3-mile buffer zone surrounding the Montebello Oil Field administrative boundary, and the subsurface aquifer region lying above locally mapped oil-bearing units. The data compilation and analysis were done as part of the California State Water Resources Control Board Oil and Gas Regional Monitoring Program and the associated USGS California Oil, Gas, and Groundwater (COGG) Program.