Supporting Data Map
URL: https://experience.arcgis.com/experience/a6d250e7ef5846e283053430848213ce
Supporting Data
An important part of the AEM data processing, inversion, and interpretation is the integration of existing supporting data. Supporting data utilized in the Statewide AEM Survey Project include well lithology, geophysical (electrical resistivity) logs, water level measurements, and water quality measurements.
Data were compiled from groundwater sustainability agencies, counties, the Online System for Well Completion Reports (OSWCR), the California Geologic Energy Management (CalGEM) Well Finder, the Groundwater Ambient Monitoring and Assessment (GAMA), the California Statewide Groundwater Elevation Monitoring (CASGEM), and the United States Geologic Survey. Additional geophysical logs were purchased from a private company.
Data compiled were screened to select high quality wells (described in the sections below). High quality wells were digitized and are provided in the Survey Area’s Supporting Data zip file, linked below:
Survey Area 1: https://data.cnra.ca.gov/dataset/aem/resource/1f5509ec-6d57-4da4-8e7a-660d4c94efcd
Survey Area 2: https://data.cnra.ca.gov/dataset/aem/resource/1f2275fb-e001-45b9-9749-3d3a216ab7ef
Survey Area 3: https://data.cnra.ca.gov/dataset/aem/resource/8d405643-cb7f-4c3d-9333-736eeeb6ffd4
Survey Area 4: https://data.cnra.ca.gov/dataset/aem/resource/eb09227e-32c7-4e11-94f5-359c9b202734
Survey Area 5: https://data.cnra.ca.gov/dataset/aem/resource/366d53c0-6387-42d3-a39f-68aed6291853
Survey Area 6: https://data.cnra.ca.gov/dataset/aem/resource/e40fa03b-f62d-443d-a290-672405c0a3a4
Well Lithology and Geophysical Logs
High Quality
Well lithology and geophysical logs located in the vicinity of the Survey Area were compiled with the objective of obtaining two high-quality logs in each of the Public Land Survey System (PLSS) one-mile square sections that the flight lines cross.
High-quality lithology logs were defined as having a verified location accuracy of less than 50 meters (164 feet) and having an average lithology description interval of less than 30 meters (98 feet). High-quality well lithology logs were digitized and tabulated by transcribing the original lithology descriptions and categorized into the free-form, the Unified Soils Classification System (USCS), and texture descriptions.
High-quality geophysical logs were defined as being less than 40 years old and having an image quality that could be digitized. Digitized geophysical logs are provided as .las files.
Low Quality
Well lithology and geophysical logs that were not within a one-mile square PLSS section that the flight lines cross or did not meet the high-quality criteria, were categorized as low-quality. Low quality wells were not digitized and are shown to provide the locations where lithology and geophysical logs were considered.
Limitations
Data are provisional. Map is under development.
Integration of Supporting Data into Existing Databases
The Supporting Data Map was developed for the purposes of displaying data compiled as a part of the Statewide AEM Survey Project. Digitized or refined data will be imported back into their original existing databases, like OSWCR or CalGEM.
Source: DWR Airborne Electromagnetic (AEM) Surveys Data
About this Resource
| Last updated | unknown |
|---|---|
| Created | unknown |
| Name | Supporting Data Map |
| Format | Web Resource |
| License | License not specified |
| Created | 1 year ago |
| has views | False |
| id | e31843f6-f57c-4a6b-9078-d36e64f42de4 |
| metadata modified | 1 year ago |
| package id | 95741741-1ca6-465d-aaa9-f49b27bfafb4 |
| position | 3 |
| state | active |