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Airborne electromagnetic (AEM) Pilot Studies

Published by California Department of Water Resources | State of California | Metadata Last Checked: July 29, 2025 | Last Modified: 2023-02-23T05:48:03.136064
Airborne electromagnetic (AEM) geophysical data were collected in California as a part of AEM pilot studies. The purpose of the AEM pilot studies was to inform the development of the Department of Water Resources’ (DWR’s) statewide AEM survey project. The AEM pilot studies were conducted in three areas: Butte and Glenn Counties, San Luis Obispo County, and Indian Wells Valley. The AEM surveys were conducted from 2018 through 2020 and were led by Stanford University with participants from the academic and private sectors, and local and state water agencies. All data used, collected, or created as a part of the AEM pilot studies are provided here. The AEM pilot studies were funded by grants from DWR, the Ministry of Denmark, and three local agencies (Butte County, Indian Wells Valley Water District, and San Luis Obispo County - Paso Robles). Pilot study participants included Stanford University, Aarhus University, Aqua Geo Frameworks, Ramboll, I-GIS, SkyTEM, University of California Davis, California State University Sacramento, California State University Chico, Parker Groundwater, the Danish Water Technology Alliance, the Danish Environmental Protection Agency, Glenn County Department of Water Resource Conservation, Butte County Department of Water Conservation, Indian Wells Valley Water District, and San Luis Obispo County.

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Complete Metadata
@type dcat:Dataset
accessLevel public
contactPoint 
                                            {
  "fn": "Ben Brezing",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:benjamin.brezing@water.ca.gov"
}
description Airborne electromagnetic (AEM) geophysical data were collected in California as a part of AEM pilot studies. The purpose of the AEM pilot studies was to inform the development of the Department of Water Resources’ (DWR’s) statewide AEM survey project. The AEM pilot studies were conducted in three areas: Butte and Glenn Counties, San Luis Obispo County, and Indian Wells Valley. The AEM surveys were conducted from 2018 through 2020 and were led by Stanford University with participants from the academic and private sectors, and local and state water agencies. All data used, collected, or created as a part of the AEM pilot studies are provided here. The AEM pilot studies were funded by grants from DWR, the Ministry of Denmark, and three local agencies (Butte County, Indian Wells Valley Water District, and San Luis Obispo County - Paso Robles). Pilot study participants included Stanford University, Aarhus University, Aqua Geo Frameworks, Ramboll, I-GIS, SkyTEM, University of California Davis, California State University Sacramento, California State University Chico, Parker Groundwater, the Danish Water Technology Alliance, the Danish Environmental Protection Agency, Glenn County Department of Water Resource Conservation, Butte County Department of Water Conservation, Indian Wells Valley Water District, and San Luis Obispo County.
distribution 
                                            [
  {
    "@type": "dcat:Distribution",
    "title": "Butte and Glenn Counties AEM Pilot Study Data",
    "format": "ZIP",
    "mediaType": "application/zip",
    "description": "Airborne electromagnetic (AEM) geophysical pilot survey conducted in Butte and Glenn Counties. All data used, collected, or created as a part of the AEM pilot study is provided in this zip file.  
Location: Butte and Glenn Counties  
Date data collected: November 30-December 3, 2018  
Total survey lines: 499 line-miles (809 line-kilometers)  
AEM system: SkyTEM312 and SkyTEM304M  
AEM Contractor: Aqua Geo Frameworks, 130360 County Road D, Mitchell NE 69357; Phone: (308) 641-2635  
AEM Vendor: SkyTEM Airborne Surveys Worldwide, Dyssen 2, 8200 Aarhus N, Denmark; Phone +45 8620 2050 
  
Folders:  
___|-- Appendix 1 - 2D Profiles___ (Documents)  
___|-- Appendix 2 - 3D Images___ (Documents)  
___|-- Appendix 3 - Data___  
___|   |-- Boreholes___ (Supporting data)  
___|   |-- Grids___ (Supporting data)  
___|   |-- kmz___ (Flight lines, AEM inversion results, Interpretations)  
___|   |-- processed data___ (Processed AEM data)  
___|   |-- raw data___ (Raw AEM data)  
___|   |-- SCI___ (AEM inversion results)  
___|   |-- Voxel___ (AEM inversion results)  
___|-- Deliverable Letters___ (Documents)  
___|-- WB_Workspace___ (AEM data workspace)  
  
Categories:  
AEM data workspace: Workspace compatible with Aarhus Workbench, contains all raw and processed data and inversion results, may also contain borehole data and GIS data  
Raw AEM data: Unprocessed AEM data, AEM system specifications, etc.  
Processed AEM data: Processed AEM data (clipped, averaged, etc.)  
AEM inversion results: Resistivity estimates resulting from inversion  
Interpretations: Interpretations based on AEM data and/or supporting data  
Flight lines: Locations of flight lines  
Supporting data: Data (other than AEM data) used in the AEM survey workflow  
Documents: Reports, memos, letters  
General: Miscellaneous files, or files that pertain to multiple categories  
Unknown: Files whose purpose is not apparent",
    "downloadURL": "https://data.cnra.ca.gov/dataset/96030ae4-9aa1-4563-a1d8-c93c489e1545/resource/d4f705c8-b9b0-4f66-8e6a-ce786a0184d2/download/butteglenn-data.zip"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Indian Wells Valley AEM Pilot Study Data",
    "format": "ZIP",
    "mediaType": "application/zip",
    "description": "Airborne electromagnetic (AEM) geophysical pilot survey conducted in Indian Wells Valley. All data used, collected, or created as a part of the AEM pilot study is provided in this zip file.  
Location: Indian Wells Valley  
Date data collected: November 8-12, 2017  
Total survey lines: 502 line-miles (808 line-kilometers)  
AEM system: SkyTEM312M   
AEM Contractors: Stanford University, 397 Panama Mall, Stanford, CA, 94305; Ramboll, 1201 K Street, Suite 1201, Sacramento, CA 95814  
AEM Vendor: SkyTEM Airborne Surveys Worldwide, Dyssen 2, 8200 Aarhus N, Denmark; Phone +45 8620 2050  
  
Folders:  
___|-- 2DGrids___ (Supporting data)  
___|-- 3DGrids___ (Supporting data)  
___|-- Borehole___ (Supporting data)  
___|-- IWV___ (Supporting data)  
___|   |-- GBD___ (AEM data workspace)  
___|   |-- Grid___ (AEM inversion results, Interpretations)   
___|   |-- Logs___ (Supporting data)  
___|   |-- WaterLvl___ (Supporting data)  
___|   |-- Wells___ (Supporting data)  
___|-- Logs___ (Supporting data)  
___|-- Points___ (Supporting data)  
___|-- Shapefiles___ (Supporting data)    
  
Categories:  
AEM data workspace: Workspace compatible with Aarhus Workbench, contains all raw and processed data and inversion results, may also contain borehole data and GIS data  
Raw AEM data: Unprocessed AEM data, AEM system specifications, etc.  
Processed AEM data: Processed AEM data (clipped, averaged, etc.)  
AEM inversion results: Resistivity estimates resulting from inversion  
Interpretations: Interpretations based on AEM data and/or supporting data  
Flight lines: Locations of flight lines  
Supporting data: Data (other than AEM data) used in the AEM survey workflow  
Documents: Reports, memos, letters  
General: Miscellaneous files, or files that pertain to multiple categories  
Unknown: Files whose purpose is not apparent",
    "downloadURL": "https://data.cnra.ca.gov/dataset/96030ae4-9aa1-4563-a1d8-c93c489e1545/resource/8dd6e996-992e-4d28-b65d-bf6f7e354930/download/iwv-data.zip"
  },
  {
    "@type": "dcat:Distribution",
    "title": "San Luis Obispo County – Paso Robles AEM Pilot Study Data",
    "format": "ZIP",
    "mediaType": "application/zip",
    "description": "Airborne electromagnetic (AEM) geophysical pilot survey conducted in Paso Robles. All data used, collected, or created as a part of the AEM pilot study is provided in this zip file.  
Location: San Luis Obispo County – Paso Robles  
Date data collected: November 5-7, 2019  
Total survey lines: 550 line-miles (885.4 line-kilometers)  
AEM system: SkyTEM312M   
AEM Contractor: Ramboll, 1201 K Street, Suite 1201, Sacramento, CA 95814  
AEM Vendor: SkyTEM Airborne Surveys Worldwide, Dyssen 2, 8200 Aarhus N, Denmark; Phone +45 8620 2050  
  
Folders:  
___|-- 01\_GS3D\_PasoRobles___   
___|   |-- 01\_Data___   
___|   |   |-- 01\_Boreholes___   (Supporting data)  
___|   |   |-- 02\_CrossSections___   (Supporting data)  
___|   |   |-- 03\_3D-girds_hydrau_cond___   (Supporting data)  
___|   |   |-- 04\_CGS_Geologic_Map___   (Supporting data)  
___|   |   |-- 05\_SkyTEM___   (AEM data workspace)  
___|   |   |-- 06\_WaterLevel___   (Supporting data)  
___|   |   |-- 07\_E-Logs___   (Supporting data)  
___|   |   |-- 08\_Mres___   (AEM inversion results)  
___|   |-- 02\_GIS___   (General)  
___|   |-- 03\_Grids___   (Supporting data)  
___|   |-- 04\_XYZ___   (Unknown)  
___|   |-- 05\_Reports___   (Documents)  
___|   |-- 06\_Figure___   (Supporting data)  
___|   |-- 07\_XYZ_DB___   (Unknown)  
___|   |-- 08\_GS3D_grids___   (Interpretations)  
___|   |-- 09\_Thickness___   (Interpretations)  
___|-- AEM___   (Flight lines)  
___|-- Basemaps___   (Supporting data)  
___|-- HCM___   (Supporting data)  
___|-- Temp___   (Documents)  
___|-- Wells___   (Supporting data)  
  
Categories:  
AEM data workspace: Workspace compatible with Aarhus Workbench, contains all raw and processed data and inversion results, may also contain borehole data and GIS data  
Raw AEM data: Unprocessed AEM data, AEM system specifications, etc.  
Processed AEM data: Processed AEM data (clipped, averaged, etc.)  
AEM inversion results: Resistivity estimates resulting from inversion  
Interpretations: Interpretations based on AEM data and/or supporting data  
Flight lines: Locations of flight lines  
Supporting data: Data (other than AEM data) used in the AEM survey workflow  
Documents: Reports, memos, letters  
General: Miscellaneous files, or files that pertain to multiple categories  
Unknown: Files whose purpose is not apparent",
    "downloadURL": "https://data.cnra.ca.gov/dataset/96030ae4-9aa1-4563-a1d8-c93c489e1545/resource/a9c3df82-a782-4e4c-b80f-6d5f9a4f8af5/download/slo-data.zip"
  },
  {
    "@type": "dcat:Distribution",
    "title": "San Luis Obispo County – Paso Robles AEM Pilot Study Reports",
    "format": "ZIP",
    "mediaType": "application/zip",
    "description": "Airborne electromagnetic (AEM) geophysical pilot survey conducted in Paso Robles. All data used, collected, or created as a part of the AEM pilot study is provided in this zip file.   
Location: San Luis Obispo County – Paso Robles  
Date data collected: November 5-7, 2019  
Total survey lines: 550 line-miles (885.4 line-kilometers)  
AEM system: SkyTEM312M   
AEM Contractor: Ramboll, 1201 K Street, Suite 1201, Sacramento, CA 95814  
AEM Vendor: SkyTEM Airborne Surveys Worldwide, Dyssen 2, 8200 Aarhus N, Denmark; Phone +45 8620 2050",
    "downloadURL": "https://data.cnra.ca.gov/dataset/96030ae4-9aa1-4563-a1d8-c93c489e1545/resource/339bb32c-6734-427d-83d9-96bdb17a340b/download/slo-reports.zip"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Butte and Glenn Counties AEM Pilot Study Report",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "Location: Butte and Glenn Counties  
Date data collected: November 30-December 3, 2018  
Total survey lines: 499 line-miles (809 line-kilometers)  
AEM system: SkyTEM312 and SkyTEM304M  
AEM Contractor: Aqua Geo Frameworks, 130360 County Road D, Mitchell NE 69357; Phone: (308) 641-2635  
AEM Vendor: SkyTEM Airborne Surveys Worldwide, Dyssen 2, 8200 Aarhus N, Denmark; Phone +45 8620 2050",
    "downloadURL": "https://data.cnra.ca.gov/dataset/96030ae4-9aa1-4563-a1d8-c93c489e1545/resource/6d127e46-7363-45fe-ba86-b51e82d8c662/download/butte_agf-aem_report_07april2019_v2a.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Indian Wells Valley AEM Pilot Study Reports",
    "format": "ZIP",
    "mediaType": "application/zip",
    "description": "Location: Indian Wells Valley
Date data collected: November 8-12, 2017
Total survey lines: 502 line-miles (808 line-kilometers)  
AEM system: SkyTEM312M   
AEM Contractors: Stanford University, 397 Panama Mall, Stanford, CA, 94305; Ramboll, 1201 K Street, Suite  1201, Sacramento, CA 95814  
AEM Vendor: SkyTEM Airborne Surveys Worldwide, Dyssen 2, 8200 Aarhus N, Denmark; Phone +45 8620 2050",
    "downloadURL": "https://data.cnra.ca.gov/dataset/96030ae4-9aa1-4563-a1d8-c93c489e1545/resource/a635aab2-426a-4583-ac7b-531425661de7/download/iwv-reports.zip"
  },
  {
    "@type": "dcat:Distribution",
    "title": "AEM Pilot Study Recommendation Report",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "Pilot study participant recommendations for future AEM surveys conducted in California.",
    "downloadURL": "https://data.cnra.ca.gov/dataset/96030ae4-9aa1-4563-a1d8-c93c489e1545/resource/898009c5-8f8e-4bbd-ac4f-abfd95c2dd90/download/gap-final-report-jan2021.pdf"
  }
]
identifier a7b5769c-454b-4607-8f2d-02ed6b801ab5
issued 2020-11-04T18:37:24.173826
keyword 
                                            [
  "AEM",
  "Airborne Electromagnetic",
  "Geophysics",
  "california department of water resources"
]
modified 2023-02-23T05:48:03.136064
publisher 
                                            {
  "name": "California Department of Water Resources",
  "@type": "org:Organization"
}
theme 
                                            [
  "Natural Resources",
  "Water"
]
title Airborne electromagnetic (AEM) Pilot Studies

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