Adelaida Area Hydrogeologic Study

Project Updates

The County of San Luis Obispo is coordinating with USGS to inititate Task 1 of the proposed study of the Adelaida area, which includes compiling and reviewing existing hydrologic and geologic data. This task also includes identifying additional data collection needs to further evaluate the hydrologic system. It is anticipated that this study will be initiated over the next few months and take approximately one year to complete. 

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Project Background

August 21, 2018:

The County Board of Supervisors directed staff to provide information regarding:

  • whether studying fractured rock and non-basin areas is feasible, including costs to study the areas if found feasible;
  • ordinances in other counties that contain provisions about well spacing and production volume triggers;
  • the authorities under which the County could take action to address concerns related to groundwater use; and
  • the relationship of any such action to groundwater sustainability agency (GSA) authorities and groundwater sustainability plan (GSP) development.

February 26, 2019:

The County Board of Supervisors received information regarding the feasibility of assessing the availability and sustainability of groundwater resources in fractured rock areas for the purposes of providing a basis for managing groundwater extractions in such areas, and regarding a general overview of County groundwater management authorities. The Board directed staff to coordinate with the U.S. Geological Survey (USGS) about conducting a hydrogeologic study in the Adelaida area west of the City of Paso Robles, and considerations associated with the concept of requiring a discretionary approval in connection with the development of new wells.

August 13, 2019:

The County Board of Supervisors directed staff to proceed with Task 1 of USGS' draft proposal to help understand the existing conditions and specific groundwater issues of the Adelaida area.

Task 1 is anticipated to be accomplished within one year at an estimated cost of $64,238 based on the USGS draft hydrogeologic study proposal.

Project Timeline

How can I get involved?

  • Check back to see project updates and meeting announcements.
  • Show up at upcoming meetings.
  • Sign up for the Adelaida area mailing list by clicking here!

Upcoming Meetings

  • No meetings are currently scheduled

Contact Public Works via web form, email, or call us at (805) 781-5252.