@prefix dcat: . @prefix dct: . @prefix foaf: . @prefix vcard: . @prefix xsd: . a dcat:Dataset ; dct:description """#Statewide AEM Surveys Project Overview\r The Department of Water Resources’ (DWR’s) Statewide Airborne Electromagnetic (AEM) Surveys Project is funded through California’s Proposition 68 and the General Fund. The goal of the project is to improve the understanding of groundwater aquifer structure to support the state and local goal of sustainable groundwater management and the implementation of the Sustainable Groundwater Management Act (SGMA). \r \r During an AEM survey, a helicopter tows electronic equipment that sends signals into the ground which bounce back. The data collected are used to create continuous images showing the distribution of electrical resistivity values of the subsurface materials that can be interpreted for lithologic properties. The resulting information will provide a standardized, statewide dataset that improves the understanding of large-scale aquifer structures and supports the development or refinement of hydrogeologic conceptual models and can help identify areas for recharging groundwater.\r \r DWR is collecting AEM data in all of California’s high- and medium-priority groundwater basins, where data collection is feasible. Data are collected in a coarsely spaced grid, with a line spacing of approximately 2-miles by 8-miles. AEM data collection started in 2021 and will continue over the next several years. Visit the AEM Survey Schedule Webpage to get up-to-date information on the survey schedule: https://gis.water.ca.gov/app/AEM-schedule.\r \r Additional information about the Statewide AEM Surveys can be found at the project website: https://water.ca.gov/Programs/SGMA/AEM\r \r # Survey Areas\r AEM data are being collected in groups of groundwater basins, defined as a Survey Area. See the Survey Area Map in the Data and Resources Section below to see the basins in each Survey Area. \r \r + Survey Area 1: 180/400 Foot Aquifer (partial), East Side (partial), Upper Valley, Forebay Aquifer, Paso Robles, Atascadero (limited), Adelaida (limited), Cuyama Valley.\r + Survey Area 2: Scott River Valley, Shasta Valley, Butte Valley, Tulelake, Fall River Valley (limited), Big Valley (Modoc/Lassen County).\r + Survey Area 3: Big Valley (Lake County), Ukiah Valley, Santa Rosa Plain, Petaluma Valley, Sonoma Valley.\r + Survey Area 4: White Wolf, Kern County, Tulare Lake, Tule, Kaweah.\r + Survey Area 5: Pleasant Valley, Westside, Kings, Madera, Chowchilla, Merced, Turlock, Modesto, Delta-Mendota\r + Survey Area 6: Cosumnes, Tracy, Eastern San Joaquin, East Contra Costa, Solano, Livermore, South American, North American, Yolo, Sutter, South Yuba, North Yuba \r + Survey Area 7: Colusa, Butte, Wyandotte Creek, Vina, Los Molinos, Corning, Red Bluff, Antelope, Bowman, Bend, Millville, South Battle Creek, Anderson, Enterprise, Eel River, Sierra Valley \r \r # Data Reports\r Data reports detail the AEM data collection, processing, inversion, interpretation, and uncertainty analyses methods and procedures. Data reports also describe additional datasets used to support the AEM surveys, including digitized lithology and geophysical logs. Multiple data reports may be provided for a single Survey Area, depending on the Survey Area coverage.\r \r # Data Availability and Types\r All data collected as a part of the Statewide AEM Surveys will be made publicly available, by survey area, approximately six to twelve months after individual surveys are complete (depending on survey area size). Datasets that will be publicly available include:\r \r ### AEM Datasets\r + Raw AEM Data \r + Processed AEM Data\r + Inverted AEM Data \r + Inverted AEM Data Uncertainty Analysis\r + Interpreted AEM Data\r + Interpreted AEM Data Uncertainty Analysis\r \r ### Supporting Datasets\r + Flown Survey Lines\r + Digitized Lithology Logs\r + Digitized Geophysical Logs\r \r #AEM Data Viewer\r The AEM Data Viewer provides a quick and easy way to visualize the inverted resistivity data in a three-dimensional space. The most recent data available are shown, which my be the provisional data for some areas that are not yet finalized. The AEM Data Viewer is under development.\r \r #Provisional Statement\r Data Reports and datasets labeled as *provisional* may be incomplete and are subject to revision until they have been thoroughly reviewed and received final approval. *Provisional* data and reports may be inaccurate and subsequent review may result in revisions to the data and reports. Data users are cautioned to consider carefully the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences.""" ; dct:identifier "a9c7ef72-2a79-4fa7-8c34-04fd6756067c" ; dct:issued "2021-12-21T15:14:41.303134"^^xsd:dateTime ; dct:modified "2022-08-02T22:53:05.456215"^^xsd:dateTime ; dct:publisher ; dct:title "DWR Airborne Electromagnetic (AEM) Surveys Data" ; dcat:contactPoint [ a vcard:Organization ; vcard:fn "Ben Brezing" ; vcard:hasEmail ] ; dcat:distribution , , , , , , , , , , , , , , , , , , , , , , , , , , , , ; dcat:keyword "aem", "airborne-electromagnetic", "amerigeo", "amerigeoss", "california-department-of-water-resources", "ckan", "geo", "geophysics", "geoss", "national", "north-america", "united-states" ; dcat:theme <%7B%22Natural%20Resources%22>, . a dcat:Distribution ; dct:description "Provisional flown flight lines for Survey Area 5 (Pleasant Valley, Westside, Kings, Madera, Chowchilla, Merced, Turlock, Modesto, and Delta-Mendota groundwater subbasins). Flight lines can also be viewed online using the AEM Flight Line Map (https://data.cnra.ca.gov/dataset/aem/resource/8a020073-20e4-4feb-9271-fe8f76c99a85)." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024091"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.322271"^^xsd:dateTime ; dct:title "Survey Area 5 - Flown Survey Lines - PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description "AEM data package containing a provisional AEM data acquisition parameters, raw and inverted AEM data. This dataset is labeled limited as it does not contain AEM data interpretations. AEM data interpretations will be posted when available. Survey Area 3 covers the following groundwater basins: Big Valley (Lake County), Ukiah Valley, Santa Rosa Plain, Petaluma Valley, Sonoma Valley." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024080"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.321045"^^xsd:dateTime ; dct:title "Survey Area 3 - AEM Data (limited) - PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description "Flown flight lines for Survey Area 1. Flight lines can also be viewed online using the AEM Flight Line Map (https://data.cnra.ca.gov/dataset/aem/resource/8a020073-20e4-4feb-9271-fe8f76c99a85)." ; dct:format "zipped arcgis shapefile" ; dct:issued "2022-08-08T12:45:08.024036"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.316494"^^xsd:dateTime ; dct:title "Survey Area 1 - Flown Survey Lines" ; dcat:accessURL ; dcat:mediaType "application/octet-stream" . a dcat:Distribution ; dct:description "Raw AEM data and auxiliary data for Survey Area 6." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024103"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.323376"^^xsd:dateTime ; dct:title "Survey Area 6 - Raw AEM Data" ; dcat:accessURL ; dcat:mediaType "application/octet-stream" . a dcat:Distribution ; dct:description "Provisional flown flight lines for Survey Area 6 (Cosumnes, Tracy, Eastern San Joaquin, East Contra Costa, Solano, Livermore, South American, North American, Yolo, Sutter, South Yuba, and North Yuba groundwater subbasins). Flight lines can also be viewed online using the AEM Flight Line Map (https://data.cnra.ca.gov/dataset/aem/resource/8a020073-20e4-4feb-9271-fe8f76c99a85)." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024099"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.323015"^^xsd:dateTime ; dct:title "Survey Area 6 - Flown Survey Lines - PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description """Appendices to the Draft Data Report (limited) for the eastern groundwater basins within Survey Area 2 - Tulelake, Big Valley, and Fall River Valley.\r \r File updated on 8/2/2022.""" ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024062"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.319161"^^xsd:dateTime ; dct:title "Survey Area 2 - Draft Data Report (limited) Appendices - Eastern Basins (Tulelake, Big Valley, Fall River Valley)" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description "Raw AEM data and auxiliary data for Survey Area 5" ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024095"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.322649"^^xsd:dateTime ; dct:title "Survey Area 5 - Raw AEM Data" ; dcat:accessURL ; dcat:mediaType "application/octet-stream" . a dcat:Distribution ; dct:description "Provisional flown flight lines for Survey Area 2. Flight lines can also be viewed online using the AEM Flight Line Map (https://data.cnra.ca.gov/dataset/aem/resource/8a020073-20e4-4feb-9271-fe8f76c99a85)." ; dct:format "zipped arcgis shapefile" ; dct:issued "2022-08-08T12:45:08.024065"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.319542"^^xsd:dateTime ; dct:title "Survey Area 2 - Flown Survey Lines - PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/octet-stream" . a dcat:Distribution ; dct:description """##Tool overview \r The AEM Data Viewer is an innovative tool that allows GSAs and stakeholders to view AEM data online. This GIS-based tool displays AEM data in a three-dimensional space and allows the user to interact with the data by zooming in and viewing the data from various angles. The tool can be accessed on a computer or mobile phone and does not require data to be downloaded or the use of specialized software. \r \r ##AEM data interpretation\r The AEM Data Viewer shows the distribution of electrical resistivity values within the aquifer, where electrical resistivity describes a material's ability to resist an electric current. Generally, materials with higher electrical resistivity values correspond to coarse-grain dominated materials, like sands and gravels, and materials with lower electrical resistivity values correspond to fine-grain dominated materials, like silts and clays. A detailed description of AEM data interpretation can be found in the Survey Area's Data Report. \r \r ##Technical description \r The AEM Data Viewer shows electrical resistivity data where each point represents the vertical center and the average resistivity value for a depth interval. Resistivity data were obtained from 04_XYZ_Ascii\\02_Sharp MLM\\*_inv.xyz files and displayed as a point cloud.\r \r ##Limitations\r Data are provisional. Map Viewer is under development.""" ; dct:issued "2022-08-08T12:45:08.024013"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.314227"^^xsd:dateTime ; dct:title "AEM Data Viewer" ; dcat:accessURL . a dcat:Distribution ; dct:description "Map showing the AEM survey flight lines where data have been collected to date." ; dct:issued "2022-08-08T12:45:08.024017"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.314623"^^xsd:dateTime ; dct:title "AEM Flight Line Map" ; dcat:accessURL . a dcat:Distribution ; dct:description "Package of compiled data used to support the AEM data interpretation, including digitized well completion reports, geophysical logs, water quality and water levels. File updated on 7/22/2022." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024047"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.317645"^^xsd:dateTime ; dct:title "Survey Area 1 - Supporting Data - PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description "Provisional flown flight lines for Survey Area 7 (Colusa, Butte, Wyandotte Creek, Vina, Los Molinos, Corning, Red Bluff, Antelope, Bowman, Bend, Millville, South Battle Creek, Anderson, Enterprise, Eel River, Sierra Valley groundwater subbasins). Flight lines can also be viewed online using the AEM Flight Line Map (https://data.cnra.ca.gov/dataset/aem/resource/8a020073-20e4-4feb-9271-fe8f76c99a85)." ; dct:format "zipped arcgis shapefile" ; dct:issued "2022-08-08T12:45:08.024106"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.323756"^^xsd:dateTime ; dct:title "Survey Area 7 - Flown Survey Lines - PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/octet-stream" . a dcat:Distribution ; dct:description "Map showing Survey Areas" ; dct:format "JPEG" ; dct:issued "2022-08-08T12:45:08.024009"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.313817"^^xsd:dateTime ; dct:title "Survey Area Map" ; dcat:accessURL ; dcat:mediaType "image/jpeg" . a dcat:Distribution ; dct:description """Appendices to the Draft Data Report (limited) for the western groundwater basins within Survey Area 2 - Scott River Valley, Shasta Valley, and Butte Valley. \r \r File updated on 8/2/2022.""" ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024054"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.318379"^^xsd:dateTime ; dct:title "Survey Area 2 - Draft Data Report (limited) Appendices - Western Basins (Scott River Valley, Shasta Valley, Butte Valley)" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description "Data Report for the Cuyama Valley portion of Survey Area 1. File uploaded on 5/31/2022." ; dct:format "PDF" ; dct:issued "2022-08-08T12:45:08.024028"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.315760"^^xsd:dateTime ; dct:title "Survey Area 1 - Cuyama Valley Data Report" ; dcat:accessURL ; dcat:mediaType "application/pdf" . a dcat:Distribution ; dct:description "Raw AEM data and auxiliary data for Survey Area 7." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024110"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.324125"^^xsd:dateTime ; dct:title "Survey Area 7 - Raw AEM Data" ; dcat:accessURL ; dcat:mediaType "application/octet-stream" . a dcat:Distribution ; dct:description "Appendices for the Cuyama Valley Data Report. File updated on 5/31/2022." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024032"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.316125"^^xsd:dateTime ; dct:title "Survey Area 1 - Cuyama Valley Data Report Appendices" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description "Data package of compiled data used to support the AEM data interpretation, including digitized well completion reports, geophysical logs, water quality and water levels. Data file uploaded on 4/19/2022." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024073"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.320289"^^xsd:dateTime ; dct:title "Survey Area 2 - Supporting Data - PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description "AEM data package containing provisional AEM data acquisition parameters, raw and inverted AEM data, and AEM profile and depth slice images. File updated on 4/26/2022." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024043"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.317269"^^xsd:dateTime ; dct:title "Survey Area 1 - Cuyama AEM Data - PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description "Provisional flown flight lines for Survey Area 4 (Tulare Lake, Kaweah, Tule, Kern County, and White Wolf groundwater subbasins). Flight lines can also be viewed online using the AEM Flight Line Map (https://data.cnra.ca.gov/dataset/aem/resource/8a020073-20e4-4feb-9271-fe8f76c99a85)." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024084"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.321489"^^xsd:dateTime ; dct:title "Survey Area 4 - Flown Survey Lines - Provisional" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description """Draft Data Report (limited) for the eastern groundwater basins within Survey Area 2 - Tulelake, Big Valley (Lassen/Modoc counties, and Fall River Valley). The Data Report is labeled as limited as it does not include AEM data interpretations. AEM data interpretations will be added in the coming months.\r \r File updated on 8/2/2022.""" ; dct:format "PDF" ; dct:issued "2022-08-08T12:45:08.024058"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.318755"^^xsd:dateTime ; dct:title "Survey Area 2 - Draft Data Report (limited) - Eastern Basins (Tulelake, Big Valley, Fall River Valley)" ; dcat:accessURL ; dcat:mediaType "application/pdf" . a dcat:Distribution ; dct:description "Data Report for the Salinas Valley portion of Survey Area 1. File updated on 5/31/2022." ; dct:format "PDF" ; dct:issued "2022-08-08T12:45:08.024021"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.315016"^^xsd:dateTime ; dct:title "Survey Area 1 - Salinas Valley Data Report" ; dcat:accessURL ; dcat:mediaType "application/pdf" . a dcat:Distribution ; dct:description "Provisional flown flight lines for Survey Area 3. Flight lines can also be viewed online using the AEM Flight Line Map (https://data.cnra.ca.gov/dataset/aem/resource/8a020073-20e4-4feb-9271-fe8f76c99a85)." ; dct:format "zipped arcgis shapefile" ; dct:issued "2022-08-08T12:45:08.024076"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.320658"^^xsd:dateTime ; dct:title "Survey Area 3 - Flown Survey Lines - PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/octet-stream" . a dcat:Distribution ; dct:description "Raw AEM Data from Survey Area 4" ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024088"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.321887"^^xsd:dateTime ; dct:title "Survey Area 4 - Raw AEM Data" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description """AEM data package containing a provisional AEM data acquisition parameters, raw and inverted AEM data. This dataset is labeled limited as it does not contain AEM data interpretations. AEM data interpretations will be posted when available. Survey Area 2 covers the following groundwater basins: Scott River Valley, Shasta Valley, Butte Valley, Tulelake, and Big Valley (Lassen/Modoc counties). \r \r File updated on 8/2/2022.""" ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024069"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.319913"^^xsd:dateTime ; dct:title "Survey Area 2 - AEM Data (limited) – PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description "AEM data package containing provisional AEM data acquisition parameters, raw and inverted AEM data, and AEM profile and depth slice images. File updated on 4/26/2022." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024040"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.316880"^^xsd:dateTime ; dct:title "Survey Area 1 - Salinas Valley AEM Data - PROVISIONAL" ; dcat:accessURL ; dcat:mediaType "application/zip" . a dcat:Distribution ; dct:description "Appendices for the Salinas Valley Data Report. File updated on 5/31/2022." ; dct:format "ZIP" ; dct:issued "2022-08-08T12:45:08.024024"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.315390"^^xsd:dateTime ; dct:title "Survey Area 1 - Salinas Valley Data Report Appendices" ; dcat:accessURL ; dcat:mediaType "application/octet-stream" . a dcat:Distribution ; dct:description "DWR's dataset and Data Report use disclaimer." ; dct:format "PDF" ; dct:issued "2022-08-08T12:45:08.024002"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.313393"^^xsd:dateTime ; dct:title "Read Me - DWR Disclaimer" ; dcat:accessURL ; dcat:mediaType "application/pdf" . a dcat:Distribution ; dct:description """Draft Data Report (limited) for the western groundwater basins within Survey Area 2 - Scott River Valley, Shasta Valley, and Butte Valley. The Data Report is labeled as limited as it does not include AEM data interpretations. AEM data interpretations will be added in the coming months. \r \r File updated on 8/2/2022.""" ; dct:format "PDF" ; dct:issued "2022-08-08T12:45:08.024051"^^xsd:dateTime ; dct:modified "2025-11-21T08:11:34.318017"^^xsd:dateTime ; dct:title "Survey Area 2 - Draft Data Report (limited) - Western Basins (Scott River Valley, Shasta Valley, Butte Valley)" ; dcat:accessURL ; dcat:mediaType "application/pdf" . a foaf:Agent ; foaf:name "US Migrating" .