All conveyances by the State of the sixteenth and thirty-sixth sections, or lands acquired in lieu thereof, or of swamp and overflowed lands shall be made subject to any existing easements or rights-of-way issued by the State prior to the time of conveyance.
Source:
Section 6210.4a, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PRC§ionNum=6210.4a..