Adelaida Area Hydrogeologic Study
The San Luis Obispo County Flood Control and Water Conservation District is coordinating with the U.S. Geological Survey (USGS) and the Upper Salinas-Las Tablas Resource Conservation District (RCD) to conduct a groundwater study in the Adelaida area west of the City of Paso Robles (click here to view an interactive map of the preliminary study area). The goal of this study is to provide a better understanding of the groundwater conditions in the Adelaida area so that informed decisions can be made about managing local water resources.
Please visit the links below for additional information.
Evaluation of Groundwater Resources in the Adelaida Area of San Luis Obispo County, California
Background information on the Adelaida area groundwater study
Presentation from the August 6, 2020 community meeting, detailing the study's purpose, scope, objectives, community envolvement and tentative timeline
Community Meetings
On Thursday, August 6, 2020 at 4:00 pm, the RCD hosted an online community meeting where USGS provided an update on the study and detailed how the community can participate in the initial data collection process. USGS reviewed data of interest for the study, including well construction information, groundwater level data, water use information, groundwater chemistry data, and geological data.
A recording of this meeting is available at the link below:
Meeting material:

Click here to access the Interactive Data Viewer for the preliminary Adelaida study area. This is an interactive mapping system to help you navigate around the study area by panning, zooming, or searching for a specific parcel or street address that you would like to locate. There are different map layers that can be shown and superimposed in this interactive mapping system such as boundaries of groundwater basins, cities, roads, or other entities by checking the layer names indicated on the left panel layer menu.
To search and locate a specific APN or street address on the map:
- Enter either the nine-digit parcel number (APN) including hyphens or the complete street address in the “Search...” bar on the upper right-hand corner of the map screen and then click on the search button to locate it. The APN or street address that you just entered will appear on the left panel and a location marker will show up on the map to identify the location.
- Click on the APN or street address name shown on the left panel layer menu will zoom in to the specified location for a close-up look.
To receive email notifications and updates on the Adelaida area hydrogeologic study, please join the mailing list by clicking here.
Frequently Asked Questions
Data of interest for the study includes well construction information, groundwater level data, water use information, groundwater chemistry data, and geological data.
If you have questions or would like to provide current or historical groundwater data for this study, please contact:
Devin Best, Executive Director
Upper Salinas – Las Tablas Resource Conservation District
[email protected]
(805) 536-3196
Land Access and Data Confidentiality Form
For additonal information on the Adelaida area hydrogeologic study, please visit our partner websites listed below.
For additional background information, please click here.
- Attend community meetings
- Provide groundwater data by contacting Devin Best, Executive Director of the Upper Salinas – Las Tablas Resource Conservation District by:
- Join the mailing list to receive study updates via email by clicking here
Contact Public Works via web form, email, or call us at (805) 781-5252.