This is our new site with more details being added soon
Three initial points, the Mount Diablo Base and Meridian (est. 1851) (center), the San Bernardino Base and Meridian (est. 1852) (bottom), and the Humboldt Base and Meridian (est. 1853) (top) are the starting points for the property grid covering California and Nevada.
The Mt. Diablo Initial Point
The San Bernardino Initial Point
The Mount Diablo Surveyors Historical Society (MDSHS) was created to enrich the general public by collecting, preserving and displaying the knowledge, technology and artifacts of the land surveying profession. The Society is a nonprofit public benefit tax-exempt corporation, and any donations of monies, grants or artifacts are fully tax deductible.
To become a member, fill out this form and mail it back to us.
We currently have regular meetings on Zoom.